Maker FAQ · Eight useful answers
Questions from the workbench
Start with these decisions, then check the instructions for your actual materials. A good answer should help you recognize where a universal rule would be misleading.
1. What is a good base for my first mosaic?
Choose a small, rigid base explicitly compatible with your adhesive and intended exposure. Avoid flexible, damaged or moisture-sensitive materials for a coaster. A purpose-made base can simplify selection, but still check its instructions and limitations. See the starter project.
2. Do I need to cut tiles to begin?
No. Smooth, pre-cut tesserae let you learn layout and bonding without cutting. Inspect every piece and reject sharp or damaged edges. If you later need to cut, choose a tool made for the material, wear eye protection and contain fragments. Plan the tools first.
3. How wide should the gaps be?
Use joint widths within the grout manufacturer's stated range and appropriate to the tesserae. Keep enough clear depth for proper filling. A spacing guide helps with consistency, but irregular pieces need judgment rather than forced uniformity. Read about placement.
4. Can I use any craft glue?
No. Select an adhesive compatible with the base, tesserae and exposure. A general craft glue is not automatically suitable for moisture, outdoors or heavy panels. Check the technical instructions rather than relying on a broad “all-purpose” description.
5. How long should I wait before grouting?
Follow the adhesive manufacturer's stated grouting readiness and curing requirements. Temperature, humidity, thickness and nonporous materials can affect the timing. Surface dryness alone is not enough. Full cure, readiness for grouting and readiness for use may be different milestones.
6. Does every mosaic need a sealer?
No. Sealing depends on the tile, grout and product system. A compatible sealer may reduce staining or absorption but does not make an unsuitable base waterproof. Some products do not need sealing; others require a particular type after curing. Test before application.
7. Can an indoor mosaic go in the garden?
Only if the complete material system supports the actual outdoor exposure, including frost where relevant. Check the base, tile, adhesive, grout and edge details. Also plan drainage and secure support. Moving a decorative indoor project outside can expose weaknesses that were not apparent indoors. Read the outdoor guide.
8. Are broken plates safe to reuse?
Use only clean, sound ceramics of known origin, and reject sharp, flaking or suspect pieces. Avoid unidentified coatings and do not cut or grind potentially hazardous material. Sort suitable fragments by thickness, and keep uneven relief away from surfaces that must support cups or be handled frequently. Plan a reclaimed pattern.