The method for depends on the severity and type of damage. 1. Filling Hairline Cracks and Minor Chips
The "Skeleton Key" feature teaches us that in historic masonry, A successful stone sill repair is one that respects the physics of the building, moving and breathing with it, rather than fighting against it. stone sills repair
: Using hard Portland cement for pointing or repairs on soft stones (like sandstone) can trap moisture, accelerating decay. The method for depends on the severity and type of damage