There are some minimum standards to allow for movement and stress relief of tiles - generally 2mm for walls and 3mm for floors is sufficient. Beyond that, you can make a judgment call based on how you want your grout to look (or not look). View this post on Instagram A post shared by TileCloud (@tilecloud) Tile spacers are small plastic or rubber devices utilized in tile installation to retain uniform gaps between tiles. 1. What are the types of material being used in tile spacers? 2. How do you choose the correct tile spacers for your project? When choosing tile spacers, consider the following aspects: X-Shaped Tile Spacers: These are the most commonly seen and used spacers and are in the shape of an x as you could guess from their name. They are used where four tiles meet such as in the main body of the installation. You can usually find them anywhere from 1/16" up to 1/2″ in size. Spacer Size = (Tile Size - Desired Spacing) / 2. Where: Spacer Size is the size of the tile spacer you need. Tile Size is the dimension of the tile (length or width, depending on the orientation). Desired Spacing is the gap you want between tiles. Tile spacers typically come in these sizes: 1/16, 1/8, 3/16, 1/4 and 3/8 inches. You can match spacer size to field tile size, or go larger or smaller. Here are some tips to help you choose the correct size: For small tiles (up to 15cm), use 1-2mm spacers. For medium-sized tiles (up to 30cm), use 2-3mm spacers. For large tiles (over 30cm), use 3-6mm spacers. In the world of tile spacers, there are different sizes available, ranging from 1/16 inch (1.5 mm) to 3/8 inch (10 mm). However, the smallest tile spacers ever produced were just 1/64 inch (0.4 mm) wide, which allowed for an incredibly tight grout line. 3. Tile spacers can also be used creatively to achieve unique visual effects. The size of tile you're using: smaller tiles often look great with thinner grout lines, around 2-3mm. For larger tiles or tiles with uneven edges, however, wider grout lines (3-5mm) can help with alignment and hide any imperfections. What Tile Spacer Size Should I Pick? As with most parts of your renovation, this will primarily come down to personal preference. Whilst the most common sizes are approximately 2-3mm if you're placing wall tiles and around 3-5mm if you're using them for flooring, you and/or your client will have the final say on the spacing to tile ratio Q0ps.