Illustrated Mosaic Instructions

How To Make A Mosaic

These instructions are for an indoor mosaic not subjected to excess moisture. The mosaic process is similar for outdoor mosaics (such as pools and fountains) but thinset mortar is used outdoors instead of Weldbond adhesive. For wet mosaics such as shower floors, you also need to use thinset. Thinset is a sticky concrete with polymers added for strength, adhesion and water resistance.

More information on outdoor mosaics, specialized topics and advanced mosaic methods can be found on our Outdoor Mosaic Guide.

Our FAQ page also contains additional mosaic instructions, tips on using thinset and answers to many specific mosaic questions. It is constantly being expanded and has solutions for many common mosaic problems. Also, here are some tips on how to avoid disasters while grouting.

For an indoor project not subjected to moisture, it is very simple:

1. Draw a simple “cartoon” (outline) on the mosaic surface. You can copy a mosaic pattern from a coloring book or your favorite pattern of china or fabric. See our blog article on creating easy mosaic art patterns from photos and images.

The Mosaic pattern is transferred ready for tiling.
The Mosaic pattern is transferred ready for tiling. This is a dry indoor mosaic, and so the tile can be attached with Weldbond Adhesive. For outdoor and wet mosaics. aconcrete stepping stone or piece of flagstone could be used for a backer and the tiles mounted with thinset mortar.

2. Decide what size mosaic tiles are most appropriate for the level of detail in the design (don’t use 1″ tiles to make details that are 1/2″). Lay a few tiles down just to make sure the colors look right together.

It’s better to take a loose, creative approach to picking colors and textures for your mosaic – a variety of surfaces and color often delights the eye more than even fields of color. Have a look at our Mosaic Artists Gallery for inspiration!

3. Glue the tiles to the surface one at a time. We recommend Weldbond Adhesive. Make sure the gaps between the tiles are about 1/8 inch or less.

We’ve extensively tested Weldbond, and consider it the most practical adhesive for indoor mosaic projects.

For outdoor projects, other considerations are required. See our comprehensive guide to outdoor mosaic for more details.

Work In Progress Goldfish Mosaic by Joe Moorman
Work In Progress Goldfish Mosaic

4. After the glue cures for 24 hours, grout the mosaic with regular tile grout. Follow our comprehensive guide to grouting, “How To Grout Mosaic Art“.

For more complicated designs, you can lay the project up on fiberglass mesh (by gluing sparingly with Weldbond adhesive), or you can pick up the tiles with clear contact paper. In either case, the next step would be to spread glue or cement on the surface and press the sheet of mosaic onto the glue or cement.

We have even more information, advice and how-to’s on our Frequently Asked Mosaic Questions page.

Continue to wipe off the excess grout.
Grouting isn’t as agonizing as you might imagine – follow our step-by-step grouting instructions.

We carry everything you might need to make a mosaic:


See the Mosaic Tips below for more help with your mosaic.

Mosaic Tips from Our Resident Mosaic Artist

  • Start simple.
  • Make a small mosaic plaque before you mosaic a wall or floor. That way you can work out your materials and methods before the big job.
  • How can you draw a design? Simple drawings like those in a coloring book work best. The color and the details come when you add the tile and glass. I always sketch something on paper and then come home and draw a simple cartoon on my plywood or concrete board using a magic marker. If drawing is a sore spot, you can create mosaic patterns easily without drawing as well.
  • My first rule of grouts is to choose a contrasting color. If you use white grout with white tile or grey grout with grey tiles, then the tiles don’t stand out from the grout, and most of the detail of your design will be lost. When in doubt, black grout is usually the answer.
  • My personal second rule of grouts is that DARKER GROUTS ALMOST ALWAYS LOOK BETTER. I have almost always been disappointed when using plain white grout. White grout makes a nice mosaic look like a summer camp project! Try an off-white or light beige if you think you need a light color. Also remember that grouts are much darker while they are wet and get lighter as they cure.
  • Don’t know anything about glues, grouts or tiling? Your local hardware store or handyman is a mosaic expert even though they’ve never made one. (You might not know anyone who has made a mosaic, but you probably know someone who has tiled a bathroom or kitchen. The technical skills are very similar.)
  • Use a wheeled glass cutter to cut glass and smalti. Use a tile nipper to cut ceramic tiles, china and other dishes.
  • Always wear safety glasses when cutting tile or glass or mixing grout. (Grout is mildly caustic and has sand and grit in it.) Making a mosaic can be fun but you should always be careful.
  • Grout mosaics outside. It’s a messy process. Look at books on home improvement for basic techniques of grouting if you’re not sure. Keep grout damp as it cures and do not allow it to dry out rapidly, otherwise it will crumble. Remember, the grout is binding water internally in a chemical process as it cure. It is NOT drying.
  • Keep mosaic tiles and supplies out of reach of children. Use caution when handling the broken glass and ceramics.
  • Spend a little more time on your mosaic. Don’t rush and don’t think about what you want to make next. It can make a world of difference in your satisfaction.
  • Avoid plywood as a backer unless you can seal the edges and bottom. Wood materials absorb water over time and warp, and then grout and tiles pop off. You might not be trying to recreate a timeless Roman mosaic that will endure for centuries, but at least make something that will last 2 or 3 years. Use plywood at least 1/2″ thick inside and concrete or concrete board outside. Always use concrete or concrete board as the base of any mosaic that will be walked on. Concrete board can be purchased from building material stores. A common brand name is Wonderboard. For my indoor mosaics, I laminate 1/4″ Wonderboard to cabinet grade plywood backers.
  • The best all-around glue for making mosaics is Weldbond. It is a water-based adhesive that looks and handles just like plain white glue, yet it cures stronger than many of the smelly solvent-based glues. The manufacturer’s brochure calls it “the most versatile, non-toxic, non-flammable adhesive on the North American market.” I agree. It bonds to hundreds of different materials and is very water-resistant once it dries. It cleans up easy with soap and water.
  • If you make a mistake, don’t be afraid to pry some of the tiles off if you don’t like what you see. (Wear goggles or safety glasses with side shields.)
  • I always wait for a week or two before I grout a piece. That way I have a chance to change things before they are literally set in concrete.
  • Simple and crude can also be noble. It’s ok if your art has blemishes and mistakes. That’s what makes it interesting and keeps it from looking like it was made on an assembly line. Don’t try to make it a perfect reproduction of anything, and you’ll probably be much happier with the time spent and the results.
  • Avoid making copies of phony arts-n-crafts stuff. There’s way too much of that around. Make your mosaic YOUR way and it will be genuine art in the highest sense of the word.

Legal Disclaimer and Copyright Information

No warranty is implied by these instructions. Use at your own risk. Please wear goggles when cutting mosaic materials or mixing grout. Mosaic materials are often sharp. Keep out of reach of children. Do not overload patio tables with mosaic materials so that the table becomes unstable (top heavy). You should also make sure that the table frame can support the overall weight. Copyright 2009 J.E. Moorman. Please link to these instructions freely, but email us if you would like to reproduce them for classes, etc.

Mosaic Art Project Ideas

Ideas for small mosaic projects for beginners with examples

Mosaic Trivets and Mosaic Plaques

The best beginner’s project is a small trivet or plaque made on 1/2 inch plywood. I recommend cabinet-grade plywood which comes with a sanded finish. Many times you can get plenty of plywood in the scrap bin from a home remodeling job. Note that your backer doesn’t need to be perfectly square. Irregular triangles and rectangles and trapezoids work as well as squares. Remember to be “artistic” and “color outside the lines.”

If you desire to make a mosaic shape like a star or a cat or a sun, then 1/2 inch sanded plywood is still the best way to go. You can buy an entire sheet of plywood and a jigsaw to cut it with for not much more than what most craft websites charge for mosaic backers. Another advantage of cutting your own shape is that your project is more likely to look like YOUR art instead of some factory-made craft kit, which is all I can think of when I see the mosaic shapes or mosaic backers sold elsewhere.

The exposed edges of your plywood backer can be painted with a neutral color of acrylic paint or even latex house paint. You don’t always have to buy something special to make art, and you can often use what you happen to have on hand. In fact, using re-purposed materials usually adds an extra dimension of creativity to your project.

Displaying small mosaic plaques is simple: they can rest on a table as a coaster or trivet to hold hot plates, or they can be displayed on a small plate easel, such as people use to display fine china plates.

Mosaic Christmas Ornament by Jim Hopton
Mosaic Christmas Ornament

Mosaic Christmas ornament by Jim Hopton constructed on a 2.5″ Styrofoam ball using glass mosaic tile and antique china shards found along the shores of the Allegheny River in Pittsburgh, PA. I recommend threading a wire loop all the way through the Styrofoam ball before mosaicing to make sure that the heavy mosaic ornament has something secure to tie the string to. Craft stores sell little hoops with spikes that stick into the Styrofoam less than an inch, but that would not hold a heavier ornament. Our mosaic ornament kit comes built ready to hold the weight of tile and grout.



Mosaic Mirror by Melanie Berry
Mosaic Mirror

Mosaic Mirror by Melanie Berry makes use of broken dinnerware and broken talavera tile from Mexico, which is a soft terracotta tile with a colorful glaze of primary colors in traditional patterns. Keep in mind that you can make your own mosaic mirrors from plywood and mirror stock. One sheet of 1/2-inch plywood is used as a backer, and a second of 1/4 inch has a whole cut out for the mirror and forms a frame around the mirror. If this seems like extra work compared to buying something ready made, then remember that making your own allows you to make it exactly the size and shape you want. Tip: you don’t have to own a jigsaw or cut it out yourself. You probably have a friend or a friend’s partner that can do that for you.

Butterfly Mosaic Vase by Sandra Schwartz
Butterfly Mosaic Vase

Butterfly Mosaic Vase by Sandra Schwartz was made on a thick glass vase. Sandra reports that she coated the vase with Weldbond and allowed that to dry before gluing on tile. This makes the work of gluing on tile much easier because a surface of dried glue is less likely to allow tile to slide compared to a slick glass surface. I would recommend scuffing the glass with coarse-grit sandpaper before applying the first coat of glue.



Mosaic Mirror by Sandra Schwartz
Mosaic Mirror

Mosaic Mirror by Sandra Schwartz is a mixed-media mosaic that uses glass gems, glass mosaic tile and broken dinnerware.

Elementile 8mm IRIDESCENT Tiles

Elementile 8mm Iridescent

5/16 inch (8mm) Iridescent Glass Mosaic Tiles by Elementile are iridized versions of the standard gloss-finish product, which we also sell. The iridescence is a surface finish created by firing metal oxides onto the surface of the glass, so it could be abraded over time by foot traffic. Note that the iridescence is deliberately mild instead of heavily applied so that the underlying colors are still visible. Like the regular 8mm, these are sold loose by the 1/4 pound (approximately 175+ pieces), which covers 0.14 square feet with a standard grout gap of 1/32 inch. Mounting grids are available. Made from recycled glass.

Elementile 8mm Iridescent Glass Mosaic Tiles

  • tile size: 5/16 inch (8mm)
  • thickness: 1/8 nominal (4mm)
  • sales unit: 1/4 pound (approximately 175+ pieces)
  • material: glass
  • variety: recycled
  • finish: iridescent
  • pigments: colorfast, UV resistant
  • durability: frost-proof, impervious to liquid
  • usage: suitable for indoor and outdoor use

Coverage

A 1/4 bag of 175 loose tiles will cover 0.14 sq ft. with a grout spacing of about 1/32 inch. To cover 1 square foot with a standard grout spacing of about 1/32 inch, you would need 1225 tiles or seven bags, but for large area coverage, order a little extra in case the tile is running incrementally thicker/heavier than normal, which could cause the piece count to run under 175. Use our tile estimator to calculate how much you need for your project.

Note that dry indoor mosaics do not have to be grouted (and thus you can simply mount the tiles tightly together), but outdoor and wet mosaics must have grout to prevent water from penetrating behind the tiles. The best way to ensure that the gaps between the tiles is to leave a 1/32-inch gap instead of pressing them tightly together, and this point seems counter intuitive to some people. Consider this: you can never mount tile so closely together that water couldn’t penetrate between, but you can put them so close that grout can’t get pressed into the gap sufficiently during the grouting process.

Compatibility

For rendering images, it is best to stick to standard gloss-finish or iridescent finish instead of mixing the two. For mixed media mosaics, a variety of finishes could be considered, but your mosaic might look better if you stuck to one or the other.

Cutting Elementile 8mm

This product cuts extremely well with the mosaic glass cutter that we sell. In fact, the homogeneous nature of pate de verre glass means that it cuts better than most types of glass tile and produces more useful pieces with fewer splinters and dust and waste.

Use in Mosaic Art

A set of tweezers can make working with these tiny tiles a lot less tedious. An 8mm Tile Mounting Grid is available for mounting designs one Mounting Paper or Tile Mounting Tape. For dry indoor mosaics, these tiles can be mounted with Weldbond Adhesive.

Elementile’s rich color palette make it a professional rendering tool that can be used for photo-realist portraiture and fine art mosaic. The colors available are more like the canonical hues of artist oil paint and less like the arbitrary mixed hues of most lines of architectural tile. The material cuts very cleanly into small pieces that can be used for micro-mosaic artwork.

How To Make Mosaics

For more advice on designing your mosaic project or cutting and grouting tile, please see our Mosaic Frequently Asked Questions page or our How To Mosaic blog or our Mosaic Information Guide.

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Visual Product Line Navigation Page

12mm ElementileLarge Elementile recycled glass tile 1/2 pound
 

8mm ElementileSmall Elementile recycled glass tile 1/4 pound
 

8mm Iridescent ElementileIridized small Elementile 1/4 pound
 

12mm C3 Recycled Glass1/4 pound or 49 sheet-mounted tiles
 

Metallic and Iridized C3C3 with metallic or iridescent coatings 1/4 pound
 

3/4″ Hakatai Tile3/4″ vitreous glass tiles 1 pound
 

3/4″ Kaleidoscope Tile3/4″ glass tiles on 25-tile sheets
 

3/4″ Aventurine MetallicAvent metallic glass tile 1 pound
 

3/4″ Aura Metallic3/4″ metallic tiles on sheets of 25 tiles
 

Kaleidoscope 3/4″ Iridescentiridized 3/4″ tile on sheets of 25
 

3/8″ Hakatai Minis3/8″ vitreous mini glass tiles 1/2 pound
 

3/8″ Kaleidoscope Minis3/8″ mini tiles on 81-tile sheets
 

3/8″ Avent Metallic Minismini metallic glass tile 1/2 pound
 

Fantastix 1/2″ Iridescent Tile15mm iridized glass tile 1/2 pound
 

7/8″ Pre-Cut Stained Glass Tile7/8″ tiles on sheets of 16
 

1″ Mirror Tile1″ mirror tiles on sheets of 25 or by the pound
 

Mosaic Tile Assortmentsassortments of different mosaic materials (various weights)
 

Marble Mosaic Tile 3/8 Inch1 pound of 10mm marble tesserae
 

Marble Mosaic Tile 9/16 Inch1 pound of 15mm marble tesserae
 

Lyric Unglazed Porcelain Tile 18.5mmLyric brand porcelain tile 1/2 pound or sheets of 75
 

American Made Stained Glass6″x6″ squares of stained glass made in the USA
 

Ceramic Letter Tile Sets5/8″ ceramic letters
 

Ceramic Number Tile Sets5/8″ ceramic numbers
 

Glass Penny Rounds1/2 pound of 12mm Glass Rounds
 

Large Penny Rounds1/2 pound of 20mm Glass Rounds
 

Polished Gemstones4oz of polished minerals
 

Rough Minerals1/2 pound of rough minerals and crystals
 

SmaltiNext-gen easy-to-cut mosaic glass in 1/4 pound units
 

Glass GemsMade in USA 1/2 pound
 

Italian Millefiorimillefiori micro-mosaic tesserae in 2oz units
 

Mosaic Tools, Grout, and Gluemosaic supplies, safety equipment, and tools
 

Stepping Stone Moldsmolds in various sizes
 

Mosaic Ornament Base

Mosaic Ornament Base

Mosaic base for a holiday ornament is made of the hard variety of expanded polystyrene that is used for fishing floats. The ornament base is spherical 3 inches in diameter, which makes it the size and shape of traditional Christmas tree ornament. The base comes with generic mounting hardware installed (designed to be repairable) and a 2mm beading cord loop which can be replaced with ribbon if desired. Note that the ornament hangs at an angle so that it resembles the earth tilted on its axis (hint). The ornament base hangs at a slight angle because the loop wraps the shaft of a 3-inch decking screw instead of a shallow eye screw like so many ornaments doomed to fail in a way difficult to repair. Our 3-inch screw’s corrosion-resistant coating also allows glue to bond to it better than bare steel, so the same white PVA adhesive Weldbond used to attach the tiles could be used to reinsert the mounting screw if it ever pulled out.

Product Specifications

  • 1x hard expanded polystyrene sphere 3-inch
  • 1x 3-inch deck screw #9 with corrosion resistant-coating
  • 4x stainless steel washers #8
  • approximately 4 inch loop of 2mm beading cord

Instructions For Using the Mosaic Ornament Base

There are three important tips for making a mosaic on the polystyrene sphere:

  • Make sure you paint the sphere with adhesive and allow it to dry a few hours before you attempt to glue tile to it. The sphere by itself is so smooth, than any tile stuck to it tends to slide downhill. A layer of dried glue is much more tacky and will help prevent tiles from sliding. You can use your fingertip to paint on the glue.
  • Lay your ornament on an old folded up towel as you work on it to keep it from rolling over. A coffee mug can also be used. Work on the part of the sphere facing up, allow the area to partially dry and then rotate the sphere slightly to work on adjacent areas.
  • Put the mosaic ornament near a central heat vent or AC vent to speed drying, but not too close to fireplaces and wood stoves and places that get too hot.

Here is a step-by-step procedure for putting a mosaic on the ornament:

  1. Hang the mosaic over some old newspapers or place where glue can drip.
  2. Use your fingertips or a small brush to paint the sphere with a white PVA such as Weldbond adhesive.
  3. Allow the glue to dry for at least several hours. Hang the ornament near AC vents and central heat vents to speed the drying.
  4. Place the sphere on its side on an old folded up towel or on top of a coffee mug to work on it.
  5. Glue mosaic tile to the part of the sphere facing up, taking care not to work to far down the sloping sides because the tile will slide.
  6. Allow the glue to partially dry and then rotate the sphere slightly to one side so that an adjacent bare patch is now facing up.
  7. Continue tiling and rotating the sphere as needed until it is covered. Take care not to rotate the sphere prematurely and cause tile to shift while the glue is still soft. Take advantage of vents and warm locations to speed the process.
  8. Allow the fully tiled mosaic ornament to dry overnight or longer if needed before grouting. If the glue isn’t fully dry, then wet grout could cause tiles to pop off.
  9. Grout the mosaic with gloved hands over a plastic basin such as an old dish pan.
  10. Haze the grout the next day by burnishing with a cloth until all tile is free of grout residue.
  11. Do not over tighten the mounting screw. Hand tighten only.
  12. If the screw becomes loose or pulls out, squirt a white PVA adhesive such as Weldbond into the hole and reinsert.

Which Tile Works Best For The Ornament?

Our stone is too thick and heavy. Glass tile works best, preferably stained glass, Elementile, and the 3/8-inch mini tiles. The 3/4 inch tile can be used as well, but it would need to be cut to fit to the curvature of the 3-inch sphere. Keep in mind that if you use cut tile, especially stained glass, then take the time to smooth any sharp edges before gluing on the tile. You can use a marble file or a rubbing stone such as we sell, or you can use a piece of stone as I did for years and just rub the edge on that.

How Much Tile Do I Need For A Mosaic Ornament?

The surface area of the sphere is about 0.2 square feet. That means you should be able to tile an ornament with one of our 6×6 sheets of stained glass, which are approximately 0.25 square feet. However, you will have to be careful and not generate too much waste as cutting scrap (slivers). We recommend keeping the grout gap small (1/16 inch or less). The following numbers are based on a grout gap of 1/16 inch, but you might need slightly more of the 3/4-inch tile because that will need to be cut up:

  • 8mm tiles: 255
  • 12mm tiles: 106
  • 3/8 inch tiles: 155
  • 3/4 inch tiles: 46

How To Make Mosaic Art

For more advice on designing your mosaic project or mounting, cutting, and grouting tile, please see our page of Mosaic Frequently Asked Questions or our Mosaic Information Guide, which lists instructional pages described by topic. We also post new articles about making mosaics at our How to Mosaic Blog.

Mosaic Coaster Base Circular Round

circular coaster base hardwood

Circular Mosaic Coaster Base is made from cherry hardwood right here in the USA. The circular base is 4 inches in diameter and 3/16 inches thick. They are cut out with a laser, so the sides have a natural burnt wood color that could be lacquered. Note that the wood is not recessed to form a border for your mosaic. Instead, your mosaic should extend to the edge of the coaster so that the finished coaster looks like a fragment of an ancient mosaic. This is easiest to do when you use tile without a heavy embossed pattern on the underside, and for this reason, we recommend the 12mm Elementile Recycled Glass Mosaic Tile for use with the coasters.

Weldbond adhesive or another high quality PVA glue is recommended for attaching tiles to the coaster base, and there are several options for grouting your mosaic coaster. You can press the tiles closely together instead of leaving a gap, but that requires much more time and effort than leaving an irregular gap and then grouting the mosaic. With an irregular grout gap of 1/16 inch or less, you can use almost every piece of tile you cut because it does not have to be exact. You can also use regular sanded grout to grout it.

Mosaic Art Projects Using Coaster Bases

Product Specifications

  • 1 piece hardwood cherry circular coaster base.
  • wood pattern is natural and varies by piece.
  • diameter: 4 inches.
  • thickness: 3/16 inches.
  • laser cut edges (natural burnt wood finish).
  • unvarnished, unlacquered.
  • made in America
  • Removable paper tape protects the best face of the coaster.
  • The reverse side of the coaster may have occasional singes from the cutting laser, but these are superficial and can be covered by mosaic.

Compatibility

Any type of glass mosaic tile could be used with these, but there is no border on the coaster, so your mosaic will go all the way to the edge. If you use a type of glass tile that has coarse embossing or bevels on the underside, then these might look odd at the edge of the mosaic. It is also more difficult to cut a tile into small pieces if the bottom has an embossed pattern. For these reasons, the coasters are best covered with stained glass or the 8mm and 12mm sizes of recycled glass mosaic tile by Elementile. We prefer Elementile to stained glass because stained glass tends to form sharper edges when cut. Whatever tile you decide to use, make sure you file off any sharp edges at the sides of the mosaic using a rough stone or marble file.

Instructions For Using The Coaster Bases For Detailed Mosaic Art

The coaster bases can be used any way you want, including simple projects for children with tiles glued randomly with variable grout spacing, and these make great first-time projects because they are small and do not require as much time and material. However, it is possible to create a more sophisticated mosaic design on the coaster using these instructions. Due to the limited space provided by the coaster, one of the most important steps is making sure you can cut tile small enough to render the smallest detail of your design and modifying your design if necessary:

  1. Find a design or picture. Google Images is a great source of photos, images, patterns, models to draw from.
  2. Draw a simple cartoon outline of your design.
  3. Try cutting up some tile and arranging it on the cartoon to see how it looks.
  4. Pay special attention to the smallest detail in your design.
  5. If it is not possible to cut tile that small, or the pieces seem too tedious to work with, then simplify your design.
  6. Note that when you start using glue, it will be easier to arrange small pieces because they will not move around as unexpectedly. Tweezers also help.
  7. Once you have you have verified that your design is not too detailed to be rendered in tile, then sketch the cartoon on the coaster in pencil.
  8. You can darken your pencil sketch with a Sharpie brand marker so that glue does not rub it off once you start working.
  9. Wipe Weldbond glue over the face of the coaster and allow to dry to seal the wood. Use a very thin coat to avoid warping the coaster from the moisture in the glue! Remember, the reason you are sealing the coaster in the first place is to avoid warping it later when you use lots of glue for the tiles. Use two light coasts and allow to dry thoroughly between coats.
  10. Start tiling your design from the center and working to the edges.
  11. Leaving an irregular grout gap of 1/16 inch or less is much easier than fitting the tile tightly together.
  12. At the edge of the coaster, cut the tile so that it fits flush with the edge. You can place a tile on the coaster, mark where it should be cut with a Sharpie marker before gluing and then make the cut.
  13. Use the fine side of a marble file or a piece of rough stone to rub the edge of the cut tile so that the edge is not as sharp.
  14. After the glue has dried (preferably for 48+ hours) grout your mosaic with sanded grout.
  15. We recommend sealing the edges and bottoms of the coasters to protect from spills and condensation that could split or warp the wood.
  16. Deft Clear Wood finish in a spray can is sold by Home Depot and can be used for this.

How Much Tile Do I Need For The Coaster Base?

The top surface of a 4-inch circular coaster base has only 12.6 square inches (0.09 square feet) in area. This means you could cover it with 45 to 60 of the 12mm Elementile or 90 to 130 of the 8mm Elementile depending on how you cut and space the tile. In either case, one bag of tile would be more than enough to cover the coaster. However, you will want to order more than that to account for the cutting waste, possibly twice as much if you are fitting the tile exactly with no grout gap.

How To Make Mosaic Art

For more advice on designing your mosaic project or mounting, cutting, and grouting tile, please see our page of Mosaic Frequently Asked Questions or our Mosaic Information Guide, which lists instructional pages described by topic. We also post new articles about making mosaics at our How to Mosaic Blog.

Mosaic Coaster Base Square

square mosaic coaster base

Square Mosaic Coaster Base is made from cherry hardwood right here in the USA. The square base is 4 inches wide and 3/16 inches thick. They are cut out with a laser, so the sides have a natural burnt wood color that could be lacquered. Note that the wood is not recessed to form a border for your mosaic. Instead, your mosaic should extend to the edge of the coaster so that the finished coaster looks like a fragment of an ancient mosaic. This is easiest to do when you use tile without a heavy embossed pattern on the underside, and for this reason, we recommend the 12mm Elementile Recycled Glass Mosaic Tile for use with the coasters.

Weldbond adhesive or another high quality PVA glue is recommended for attaching tiles to the coaster base, and there are several options for grouting your mosaic coaster. You can press the tiles closely together instead of leaving a gap, but that requires much more time and effort than leaving an irregular gap and then grouting the mosaic. With an irregular grout gap of 1/16 inch or less, you can use almost every piece of tile you cut because it does not have to be exact. You can also use regular sanded grout to grout it.

Mosaic Art Projects Using Coaster Bases

Product Specifications

  • 1 piece hardwood cherry square coaster base.
  • wood pattern is natural and varies by piece.
  • width: 4 inches.
  • thickness: 3/16 inches.
  • laser cut edges (natural burnt wood finish).
  • unvarnished, unlacquered.
  • made in America
  • Removable paper tape protects the best face of the coaster.
  • The reverse side of the coaster may have occasional singes from the cutting laser, but these are superficial and can be covered by mosaic.

Compatibility

Any type of glass mosaic tile could be used with these, but there is no border on the coaster, so your mosaic will go all the way to the edge. If you use a type of glass tile that has coarse embossing or bevels on the underside, then these might look odd at the edge of the mosaic. It is also more difficult to cut a tile into small pieces if the bottom has an embossed pattern. For these reasons, the coasters are best covered with stained glass or the 8mm and 12mm sizes of recycled glass mosaic tile by Elementile. We prefer Elementile to stained glass because stained glass tends to form sharper edges when cut. Whatever tile you decide to use, make sure you file off any sharp edges at the sides of the mosaic using a rough stone or marble file.

Instructions For Using The Coaster Bases For Detailed Mosaic Art

The coaster bases can be used any way you want, including simple projects for children with tiles glued randomly with variable grout spacing, and these make great first-time projects because they are small and do not require as much time and material. However, it is possible to create a more sophisticated mosaic design on the coaster using these instructions. Due to the limited space provided by the coaster, one of the most important steps is making sure you can cut tile small enough to render the smallest detail of your design and modifying your design if necessary:

  1. Find a design or picture. Google Images is a great source of photos, images, patterns, models to draw from.
  2. Draw a simple cartoon outline of your design.
  3. Try cutting up some tile and arranging it on the cartoon to see how it looks.
  4. Pay special attention to the smallest detail in your design.
  5. If it is not possible to cut tile that small, or the pieces seem too tedious to work with, then simplify your design.
  6. Note that when you start using glue, it will be easier to arrange small pieces because they will not move around as unexpectedly. Tweezers also help.
  7. Once you have you have verified that your design is not too detailed to be rendered in tile, then sketch the cartoon on the coaster in pencil.
  8. You can darken your pencil sketch with a Sharpie brand marker so that glue does not rub it off once you start working.
  9. Wipe Weldbond glue over the face of the coaster and allow to dry to seal the wood. Use a very thin coat to avoid warping the coaster from the moisture in the glue! Remember, the reason you are sealing the coaster in the first place is to avoid warping it later when you use lots of glue for the tiles. Use two light coasts and allow to dry thoroughly between coats.
  10. Start tiling your design from the center and working to the edges.
  11. Leaving an irregular grout gap of 1/16 inch or less is much easier than fitting the tile tightly together.
  12. At the edge of the coaster, cut the tile so that it fits flush with the edge. You can place a tile on the coaster, mark where it should be cut with a Sharpie marker before gluing and then make the cut.
  13. Use the fine side of a marble file or a piece of rough stone to rub the edge of the cut tile so that the edge is not as sharp.
  14. After the glue has dried (preferably for 48+ hours) grout your mosaic with sanded grout.
  15. We recommend sealing the edges and bottoms of the coasters to protect from spills and condensation that could split or warp the wood.
  16. Deft Clear Wood finish in a spray can is sold by Home Depot and can be used for this.

How Much Tile Do I Need For The Coaster Base?

The top surface of a 4-inch square coaster base has only 16 square inches (0.1 square feet) in area. This means you could cover it with 56 to 72 of the 12mm Elementile or 113 to 162 of the 8mm Elementile depending on how you cut and space the tile. In either case, one bag of tile would be more than enough to cover the coaster. However, you will want to order more than that to account for the cutting waste, possibly twice as much if you are fitting the tile exactly with no grout gap.

How To Make Mosaic Art

For more advice on designing your mosaic project or mounting, cutting, and grouting tile, please see our page of Mosaic Frequently Asked Questions or our Mosaic Information Guide, which lists instructional pages described by topic. We also post new articles about making mosaics at our How to Mosaic Blog.

Grouting Bag

Grouting Bag

The Grouting Bag is made from latex-rubber-coated reinforced canvas and is puncture and tear resistant for durable use with concrete products such as grouts and mortars. The bag is large, about 22 inches long, so it can hold 5 to 8 pounds of grout easily, depending on your preference. (We prefer to use less and keep the top of the bag cleaner where you twist it closed.) The purpose of the bag is for applying grout in areas where you have to work a little neater or in places that are harder to reach, such as the tops of walls near the ceiling. Ask any installer, and they will tell you: squeezing a controlled amount from a bag is neater than lifting wet grout on a trowel, especially when working over head, unless you don’t mind clumps of concrete falling in your hair!

Grouting Bag

  • material: reinforced canvas coated with latex rubber
  • length: approximately 22 inches
  • capacity: approximately 8 pounds
  • closure: twisted by hand, using clips or clamps recommended
  • nozzle: simple opening in the end of the bag

How to Use the Grouting Bag

A grouting bag works just like an icing bag that is used for icing cakes. The only difference is that it is larger and doesn’t come with different nipple attachments. The end of the bag is twisted to close it up and squeeze it, and we have found that a plastic carpenters clamp is useful for keeping the bag twisted closed when you sit it down. (If it twists open, it can get a little messy when you twist it closed again.)

Use for Detailed Mosaic Art

The normal use of the Grouting Bag is for getting grout neatly into architectural crevices and corners that are too confined for trowel work. We use the Grouting Bag for much more detailed work than that. Specifically, we use the bag for cementing irregularly-shaped artifacts in found-object mosaic using thinset mortar. To use the bag for this purpose, we attach a small diameter nozzle from a Wilton brand cake icing kit, which allows us to apply smaller amounts of mortar in a more controlled way.

To get the nozzle tip of a cake icing kit to stay on the grouting bag, we have to improvise a little bit: We trim some of the tip of the bag off so that the nozzle can fit through the opening. Then we put rubber bands around the plastic collar holding the nozzle to help it stay on. The finished assembly looks home made, but we have found it to be highly effective for dispensing controlled amounts of thinset mortar on tiny objects without contaminating them. Note that rags are still required for cleaning up occasional mistakes, and a set of palette knives is also useful for manipulating and spreading material.

Tip: the icing nozzle has a small diameter and tends to get clogged occasionally, so keep a nail or piece of wire to clean it out. We have also written some instructions for how to use thinset mortar for detailed mosaic artwork.

Loading Without Contaminating

The most important tip we can give in using the bag is to keep the top of the inside clean where you will need to twist it closed. How do you do that and still get the sticky grout or thinset inside? Pull the top of the bag down so that it is inside out, but don’t pull the bag all the way inside out. Then sit the bag tip down in something that can hold it upright as you scoop grout or thinset into it. We sit our bags in plastic quart-sized yogurt tubs and coffee cans and other recycled containers, and then we fill them and then fold up the top of the bag so that it is no longer inside out. Then we twist the top of the bag closed and clamp it and get to work.

Safety

Always wear safety glasses with side shields when mixing and applying grout. Grout is mildly caustic and contains little pieces of sand. Grouting is a physical process with lots of mixing and rubbing and wiping, and these motions cause pieces of sand and grit to fly unexpectedly.

How To Make Mosaics

For more advice on designing your mosaic project or mounting, cutting, and grouting tile, please see our page of Mosaic Frequently Asked Questions or our Mosaic Information Guide, which lists instructional pages described by topic. We also post new articles about making mosaics at our How to Mosaic Blog.

Mosaic Tile Mounting Grid 8mm (Fits ~90% pieces)

Mosaic Tile Mounting Grid 8mm

Mosaic Tile Mounting Grid 8mm is for temporarily mounting patterns of uncut tile Elemetile brand on paper for rapid installation using the indirect method. They are not needed for most projects. Most artists use cut tiles or glue each tile directly on the surface they are covering and do not need grids.

The grid mounts 1024 of the 8mm Tiny Elementile on ~1 square foot of mosaic mounting paper in a uniform grid of 32 x 32 tiles with a grout gap of approximately 1/32 inch. HOWEVER, THE 8MM TILE IS A NOMINAL SIZE, AND THE ACTUAL SIZE VARIES, AND SO ABOUT 5 TO 10% OF THE PIECES MIGHT NOT FIT IN THE GRID OR FIT VERY TIGHTLY. DO NOT BUY THIS GRID IF THAT IS A PROBLEM.

Note that the paper we sell is 1.15 square foot, which is slightly larger than these grids but should not pose any problems. (You can always trim away the excess paper after you mount the tiles.)

This grid is suitable for use with either the standard glossy finish 8mm Elementile or the iridescent finish 8mm Elementile.

Mosaic Tile Mounting Grid 8mm

  • grid size: 32 tiles x 32 tiles.
  • grid area: 11.5 inches x 11.5 inches (under 1 square foot).
  • grout gap: approximately 1/32 inch.
  • tile size: 8mm (~5/16 inch).

Indirect Method

Mosaic tile can be glued one at a time DIRECTLY to a surface, or you can lay your mosaic out on a temporary surface in what is called the “Indirect Method.” Temporary surfaces can include things like fiberglass mesh, paper, adhesive contact paper or trays filled with lime putty. Our grids were made to work with self-adhesive mounting tape and mounting paper that is glued to the faces of the tiles.

Why Use The Indirect Method

Why would you want to use the Indirect Method? It is easier to lay up your mosaic design at your work table than it is to lay it out on a floor or vertical wall. Also, you can work for days or weeks at your work table laying up the mosaic without tying up the location where the mosaic will actually be installed. Again, none of this is necessary for a beginner laying up a small craft project like a trivet or a mosaic mirror.

Use In Mosaic Art

The following is how to do the indirect method using our grids and mounting paper:

  1. Place glass mosaic tile into the grid face up, filling up the grid with your design.
  2. Dilute water-soluble glue such as Elmer’s Glue with 3 parts water to 1 part glue.
  3. Paint the water soluble glue onto the mounting paper using a small artists paint brush. Use a light coat to avoid wrinkling the paper.
  4. Lay mounting paper onto the face of the tile, careful to avoid wrinkles.
  5. Allow sheet to dry completely and remove from the grid.
  6. Spread thinset mortar or mosaic adhesive on the surface to be mosaiced.
  7. “Butter” the bottom of the sheet of tile with the same mortar or adhesive. Of coarse, you butter the bare glass bottoms of the tile, not the paper.
  8. Press the sheet of tiles into the adhesive-covered surface with the PAPER ON THE OUTSIDE.
  9. Allow the thinset or adhesive to cure for 24 hours.
  10. Mist the paper until it is soaked and peel it off the tiles.
  11. Grout the mosaic.

How To Make Mosaics

For more advice on designing your mosaic project or cutting and grouting tile, please see our Mosaic Frequently Asked Questions page or our How To Mosaic blog or our Mosaic Information Guide.

Grouting Sponge Extra Large

grouting sponge

Extra Large Grouting Sponge is foam rubber for high water holding capacity and efficient grouting and clean up. We also make use of recycled/reused rags in our studio when grouting, but a sponge is essential for this process because it is more easily and quickly rinsed clean; it doesn’t hold sand as much as woven fibers, and it softer and less likely to erode grout from the gaps between tile.

Grouting Sponge Extra Large

  • foam rubber
  • width: ~5.5 inches
  • length: ~7.5 inches
  • thickness: ~2 inches

Grouting Tips

Grouting outdoors is best, especially some place you can run a water hose and don’t mind a little sand and residue being rinsed. Excess grout can kill grass or plants, so scoop up what you can and wash away what is left.

Grout and concrete harden by BINDING water not by drying out. If you let grout or concrete dry out while it is curing, then it will be soft and crumbly. This also happens if you did not add enough water to the grout when you mixed it up. Cover your mosaic with plastic if you are grouting in strong heat, sunlight, air conditioning, wind, or any other condition that accelerates drying.

Make sure you rinse all the water out of your sponge so that it is moist but not leaving drips of water when you rub it on the mosaic. You do not want to get drips of water in the grout in the gaps when you are rubbing the residue off the faces of the tile.

Do not pour left over grout or grout sludge down plumbing or drains. Grout is concrete and can harden under water. Even sand can clog drains. Instead, pour your grout and grout water into an old plastic container. After it hardens, you can pour off the water and dispose what is left as solid waste.

We use traditional grouts and NOT the new epoxy-grouts, and all our advice is written for traditional grout. If you use the new epoxy-base products, then make sure you read manufacturer recommendations for safety and disposal.

Safety

Always wear safety glasses with side shields when mixing and applying grout. Grouting is a physical process with lots of mixing and rubbing and wiping, and these motions cause pieces of sand and grit to fly unexpectedly.

Grout is mildly caustic and can irritate skin, sometimes severely if you have sensitive skin. The sand and rubbing required in grouting aggravate the problem. Wear heavy-duty rubber gloves while grouting to protect your skin.

Grout contains powdered silica (sand) and is slightly caustic due to the lime it contains. Avoid breathing the dust. Wear an ordinary dust mask rated N95 when mixing or use a misting water bottle to avoid creating dust.

How To Make Mosaics

For more advice on designing your mosaic project or mounting, cutting, and grouting tile, please see our page of Mosaic Frequently Asked Questions or our Mosaic Information Guide, which lists instructional pages described by topic. We also post new articles about making mosaics at our How to Mosaic Blog.