How To Fix Cracks In Concrete Walls With Stucco Finish

Widen the crack to a minimum of 1 4 inch using a chisel and hammer the edges of the crack should be vertical or beveled in an inverted v.

How to fix cracks in concrete walls with stucco finish.

How to fix hairline cracks in stucco. Clean the crack of all debris dirt particles of concrete or pebbles. Injecting a typical wall crack with an epoxy or urethane resin is done under pressure pushing the material from the inside all the way to the outside. Mix a new batch of mortar at the normal consistency.

Monitor to be sure that it does not continue to open. Smooth the mix with a finishing trowel then pack it against the edge of the existing stucco with a brick trowel. Let s start with the width of the crack. Break away any deteriorating concrete and remove loose material with a brush.

The most common products are an acrylic caulk that you can use to fill in the gaps. Make cosmetic and waterproof repairs to concrete masonry and stucco walls. Scoop fist size wads of wet stucco onto a brick trowel and toss them against the wire lath until it s completely covered. The only way to repair foundation wall cracks successfully is by the injection process.

Let the caulk cure for 24 hours then paint over it with a water based paint. Then fill in the crack with the mixture and a standard caulk gun. Use a vacuum cleaner or soft brush after you ve cleaned out larger particles with a wire brush. Allow the mortar to dry for about one hour.

Apply the new mortar to the front of the crack using the margin trowel until it is flush with the rest of the wall. The only time we inspect stucco that doesn t have any cracks is shortly after the homeowner has had the walls caulked and painted. Hairline can be sealed with a coat of paint if exposed to the weather but no repair necessary if not. You ll need to widen the crack to about a quarter of an inch wide and then clear out any debris with a wire brush.

About the book author gary and peg hedstrom are self taught repair masters with experience in carpentry plumbing appliance repair and more. Keep adding more material until this layer is about 1 2 inch below the existing stucco surface. Quikrete stucco repair or quikrete pre mixed stucco patch can be used. Sealing the cracks with quikrete is an easy project for any skill level.

Leave about inch on the front side of the wall to leave room for the stucco pattern.