Slate is ground up into a fine powder and mixed with a tough liquid polymer resin.
After mixing, the slate-polymer mix is catalised and poured into a mold where it sets rock hard. Re-constituted slate is a very tough material. It has the inert properties of the mineral slate but has the strength of concrete and is completely waterproof. We have been making house signs exclusively from this material since 1995 because of it s strength and better outdoor weathering properties compared to wood, metal, or ceramics . Our house signs need no maintenance to keep them looking good.