Technical Information

Technical Information

Stone is heavy

At typically 80kg per square metre for 30mm thick slabs, there are obvious constraints on the size of slabs that we can handle and install. We always try to minimise the number of joints but there will be times when size, access and installation considerations will determine the maximum size of the pieces that we produce.

Stone is brittle

The compressive strength of stone is good but its tensile strength is low. If you bend it, it will crack. For vulnerable stone we resin bond strengthening rods into the stone to impart additional strength.

Stone is porous

A common misconception is that stone, particularly granite, is non porous. In its natural state stone is porous and a sealer is required to keep it stain free.

Where a client intends to use stone for a shower tray or in a wet room, we recommend that the area is made waterproof prior to the installation of the stone. If it is tested and does not leak before the stone is fitted, it is unlikely to leak afterwards. It is also important to choose the correct tap and 'dress' the waterproofing into it. This will ensure that any moisture that does pass through the stone or its joints is routed into the drain.

Where stone is to be fitted to the walls of wet areas such as showers, we recommend a tile backer board which is itself waterproof. These are specifically designed to maximise the adhesion of the stone to the wall and will provide the best long term result.

Stone treatment products

We carry a full range of sealers, cleaners and stone care products and will be happy to advise you how to look after your particular stone.