How To Repair Stone Foundation Walls
Pack more mortar around the stone.
How to repair stone foundation walls. This causes water leaks that lead to further decay of the mortar. Afterward a good masonry sealer will protect them against moisture and damage. If a space between foundation stones is wider than 3 inches or so fill it with mortar and then press a small rock firmly into the mortar to fill the space. Step 2 assess the damage.
Modern concrete foundations have helped minimize problems with foundations but if you live in a home that 100 years old or older you could have a stone foundation. Although they can look very attractive the mortar joints are prone to weakening or cracking over time. While concrete is poured in a single batch to create a solid foundation or basement wall you can see that this is not the case with stone. A professional foundation crew will construct a one sided concrete form inside the old basement perimeter and pour a new concrete wall.
Pour an interior wall. Eventually you can be left with loose and missing stones or bulging and collapsing foundation walls. In order to repair your stone foundation you need to tackle the problem from the both inside and the outside of your home. Your problem is most likely that stones have come loose and shifted out of place.
Use your shovel to dig a 1 foot deep trench along the perimeter of the stone foundation. Stone foundation walls are common on many older homes. Sometimes all it takes is a thorough cleaning to help your stone basement walls look almost new again.