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Confused about 'rectification', or unfamiliar with terms like 'back buttering'? Whatever your existing knowledge, this is a layman-friendly guide to all terms tiling related.

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Any curvature of a tile, whether concave or convex, which results in the tile surface not being perfectly flat.

Water Absorption

The ability of a material to take up and retain water.  Conversely, water resistance is the ability of a material to resistant penetration by water.

X-Ray Diffraction

A test used to identify a material’s crystalline components by comparing the diffraction spectra with those of known materials.

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