Category: Material and Tool Information

  • How To Change A Mosaic Before Grouting (Or Afterward)

    Already Grouted? If you have already grouted your mosaic, you can still use these instructions, but you will first need to remove the grout using a grout removal tool, which is normally used to scrape grout from the gaps between glazed ceramic tile. It may take a little more care with glass, but this tool…

  • How To Mix Up Concrete, Mortar and Grout Without Creating Dust

    Concretes, mortars and grouts have the potential to create significant amounts of dangerous dust when the water is first added. There is only 1 part water for every 4 parts concrete by weight, so much stirring is required before all the dry concrete will be wet. In fact, you can create a lot of dust…

  • How To Dispose of Acrylic Paint Rinse Water

    Why You Shouldn’t Pour It Down Drains Acrylics are a great alternative to traditional oil paint because they are water based, and so there aren’t any fumes, and you can clean up with soap and water. However, at the end of a studio session, the jar or container that you use to rinse off your…

  • How To Dispose of Leftover Grout and Thinset

    Grout and thinset mortar are types of concrete and should never be rinsed down drains. That includes the muddy water rinsed from the buckets and trowels used to handle these materials. Remember concrete contains sand and can actually harden underwater, which makes it perfect for clogging pipes. Most people find it easiest to wash up…

  • How To Keep Your Hands Clean When Using Thinset Mortar

    Thinset Mortar is concrete with polymers added for enhanced strength and adhesive properties and is the recommended material for all outdoor and wet mosaics (pools, fountains, etc.). Unhardened thinset looks more or less like wet concrete, but it is sticky almost like honey or tar, and handling it for the first time can be a…

  • Mosaic Tile Colors for Flesh and Skin Tones

    I frequently get emails asking me what is the best color mosaic tile we sell for rendering skin tones. I then have to explain that the question doesn’t have a straightforward answer, even if the person specifies the particular race or ethnicity of the skin to be depicted. The reason the question is problematic is…

  • Adhesives for Mosaic Mannequins and Fiberglass Sculptures

    We never have to worry about evaluating new adhesives in our work because we use conventional mosaic backers like plywood (indoors), concrete backer board, stone slabs and masonry walls. This means we always use Weldbond (a white PVA adhesive for dry indoor mosaics) and thinset mortar for everything else. But what if you are wanting…

  • Practical Advice for Outdoor Mosaic Art

    Thinset Mortar The first thing you need to know about outdoor and wet mosaic (pool, fountain, shower) is that thinset mortar is used instead of glue. Thinset mortar is a type of concrete with polymers added for tensile strength and enhanced adhesive properties. It contains sand and portland cement just like standard concrete and comes…

  • Can I Use Silicone Caulk as a Mosaic Adhesive?

    First I want to clarify that I am not talking about the invisible pore sealers that are used to seal tile and grout. Those are silicone-based as well, but my post about mosaic birdhouses was talking about using silicone caulks and sealing gels as an adhesive for mounting tile. I have serious doubts about these.…

  • Mosaic Birdhouses

    Today someone emailed me about using 1/4-inch concrete backer board to make mosaic birdhouses more weather-resistant and durable. I think they had read we recommend thinset mortar for all outdoor and wet mosaics and that thinset mortar was not recommended for wood, which is true, and they were wanting to overcome the problem by laminating…