Sigma Silicone Water-Repellent Solution

Clear water-repellent treatment for masonry, from 1 L up to 20 L. It soaks into stone and render and makes the surface shed water while still letting the wall breathe, which matters on old limestone that must be able to dry out.

• Check before ordering: Repellent, not a waterproofer. It will not stop a leak or bridge a crack, and it must go on a clean, dry, sound surface.