Buy Lime Putty Mortar -

It can accommodate minor settling or thermal expansion in old buildings without cracking the surrounding stone or brick.

Unlike modern mortars, lime putty mortar is , meaning it sets by absorbing carbon dioxide from the air rather than through a chemical reaction with water. This unique curing process provides several critical benefits: buy lime putty mortar

Small cracks can sometimes "reseal" themselves through continued carbonation as moisture moves through the joint. What to Look for When Buying It can accommodate minor settling or thermal expansion