Tile Calculator

Divide the total area (in m2) by the area of one tile (in m2). For example, for a 10m2 room with 600x300mm tiles (0.18m2 each), you need 10/0.18 = 56 tiles. Then add wastage.

Allow 10% for grid/straight lay patterns, 15% for brick bond/offset patterns, and 20-25% for herringbone or diagonal patterns. More complex room shapes also need more wastage for cuts.

Typically 3-5 kg per m2 depending on tile size and substrate. Larger tiles need more adhesive (often back-buttered). Budget around 4 kg/m2 for standard floor tiling.

Approximately 1-2 kg per m2 depending on tile size and joint width. Smaller tiles with wider joints need more grout. Budget around 1.5 kg/m2 for standard installations.

Larger tiles (600x600 or 600x300mm) can make small rooms look bigger as there are fewer grout lines. However, they may need more cuts. 300x300mm is versatile and easier to handle.

Brick bond (or running bond) means each row of tiles is offset by half a tile, like a brick wall. It creates a classic look and disguises slight tile size variations, but produces more wastage than grid layout.

Herringbone is a V-shaped zigzag pattern where rectangular tiles are laid at 45-degree angles. It is visually striking but requires the most cutting and has the highest wastage (15-25%).

Porcelain tiles are generally non-porous and do not need sealing. Natural stone (marble, slate, limestone) and unglazed ceramic tiles should be sealed before grouting to prevent staining.

Wait at least 24 hours after tiling before grouting. The adhesive needs to set fully. In cold or damp conditions, allow 48 hours. Follow the adhesive manufacturer instructions.

Yes, always order extra beyond your wastage calculation. Keep spare tiles for future repairs. The same tile may be discontinued or have batch colour variations if you order later.