Resining natural stone is a procedure meant to fix natural flaws in the stone. Fissures and pits are filled with epoxy resins for granite and polyesters for marble. Almost all travertine stones, a large number of marbles, and some granite varieties are resined.

The Resining Process

The natural stone slabs are first honed to allow the surface of the stone to evenly absorb the resin. The stone is then put into a special convection oven for a few hours to completely dry it out. This is so the resin can absorb deeply into any small cracks on the surface of the stone. Once it has completely dried, the resin is spread over the entire surface of the stone and then the resined slabs are cured. After the resin has cured, the slabs are polished. All excess resin is removed from the face of the slab, leaving only the resin that has filled any cracks or pits.

Why Is Natural Stone Resined?

Resining Natural Stone can help strengthen more delicate stones. Some stones are too fragile to go through the polishing process.

Resined slabs are more unlikely to be damaged during shipping.

Some stones are very pitted. Resining them fills in the pits and makes the stone smoother to the touch.

Fissures that pass through a slab of granite decrease the strength of the stone. Resining the granite fills in these fissures and helps to strengthen the stone.

Natural micro-fissures in some granites can reduce the beauty of the stone by compromising the final polished finish.

There is less waste with resined natural stones, especially a resined marble. This reduces the cost of natural stone to you.

Resining natural stone may make a stone less porous. Some experts say that resined stones do not need to be sealed since the resin acts as a sealer. Other experts recommend that more porous natural stones should be sealed regardless of whether it had been resined or not because most of the resin is removed from the surface of the stone during the polishing process.

If you plan to seal your stone, it is best to use a Water Based Sealer with a resined stone. Some solvent based sealers can react negatively with the resin causing the stone to appear cloudy, discolored, or faded. Test your preferred sealer on a scrap or sample piece of the stone if you are unsure.