- Most often, the cause of damage to brick foundations is cracked mortar. If the damaged area is manageable, a do-it-yourselfer can easily perform the necessary.
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How to Repair Brick and Block Foundations. Most often, the cause of damage to brick foundations is cracked mortar. If the damaged area is manageable, a do-it-yourselfer can easily perform the necessary repairs.
Cracking is perhaps the number one source of concrete block foundation repair. Cracks in any type of concrete foundation are concerning, but in a concrete.
Bricks were once used extensively to construct foundations. Today, however, if a foundation doesn't consist of concrete, it's probably constructed of concrete block. In either case, brick and block have one thing in common: They're joined together with mortar. Unfortunately, over time, mortar deteriorates. Cracked and deteriorating mortar joints aren't only unsightly, but they also diminish the integrity of the surface and can allow water to get behind the brick or block, causing major damage. You prevent this problem by tuck-pointing the brick or block foundation, which means removing and replacing cracked or missing mortar. If the cracked or deteriorating mortar is extensive (an entire foundation, wall, or wainscot), tuck-pointing is a project that's best left to professionals.
To do the repairs yourself, follow these steps:. Chip away cracked and loose mortar by using a slim cold chisel and a hammer. Remove the existing material to a depth of approximately 1/2 inch.