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How To Foundation Crack Repair

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How to Repair Foundation Cracks

Small cracks in a foundation wall are usually not serious and do not pose a structural threat. However, it is important to repair these cracks to prevent water leakage and rot. Non-structural cracks can be sealed with a latex caulking mix, hydraulic cement or patching compound. This procedure is quick and easy and requires only a few basic tools.

Rebar Replacement

While hairline cracks in your foundation aren’t always a major cause for concern, it is important to repair these before they get worse. For cracks less than 1/4 inch wide, you can fill them with polyurethane or silicone caulking. This type of crack repair allows for expansion and contraction due to temperature changes without compromising the integrity of your foundation walls.

For cracks that are wider than a hairline, you’ll need to add carbon fiber countersunk staples or straps to the r for additional reinforcement. This will prevent the crack from re-opening over time. For non-structural cracks that are not threatening the stability of your home, you can use vinyl patching compound to fill the cracks.

It’s also a good idea to seal your foundation walls with waterproof masonry sealer. This will prevent air and water infiltration into your basement or crawl space, which can lead to mold and mildew growth.

J-Bolt Replacement

A bolt shaped like a letter J is placed in the foundation before concrete is poured. It’s used to prevent the wall from rising or sliding off the foundation and is usually made of steel or titanium, which is strong, durable and resists corrosive elements.

When a crack in the foundation walls is wider than a hairline, it should be considered structural and requires professional inspection. It might mean that there’s a bigger problem with the foundation that can’t be resolved by a DIY repair project, such as water infiltration or soil movement.

Non-structural cracks can be filled in with a polyurethane, silicone or latex concrete caulk that’s designed to expand and contract with changes in weather. It’s important to monitor these cracks and reapply the caulk as needed. Also, be sure to clean out gutters and down spouts regularly so that they aren’t clogged and allowing water to pool around the foundation. This can exacerbate cracking.

Simpson Strap Repair

Simpson Strong-Tie straps are simple, versatile solutions for a wide range of connections. These steel straps join and reinforce joints in wood building projects, transferring tension and compression loads. They are available in a wide variety of lengths, widths and thicknesses to meet the demands of different applications. They can be used on the wide or narrow face of lumber and work well in both light and heavy-duty projects.

Hairline cracks may not seem like a big deal, but they should be monitored and possibly repaired as soon as possible. This will help prevent water seepage and protect the structural integrity of your home.

However, if you’ve noticed a vertical crack that is wider than the thickness of a dime, you should have a foundation specialist take a look. These are a sign of hydrostatic pressure that needs to be relieved and can eventually lead to bowing, leaning or sinking foundation walls. This can lead to costly repairs and major structural damage.

Epoxy Injections

This method uses low-pressure injection of epoxy crack sealer through injection ports that are installed in a foundation wall. Before injecting, the crack is scrubbed clean and blown dry with compressed air. Licensed foundation specialists will help you select the right type of injection resin for the size of your structural crack.

Epoxy injection is an excellent choice to repair active leaking cracks in concrete foundation walls. The injected epoxy will bond the two sides of the crack together to create a structural repair joint that resists water penetration far better than the leaking concrete alone.

When using this method, it is important that the cracks be free of running water, because the injected epoxy will wastefully expand into a void. Injection ports must be sealed with surface paste epoxy to prevent leakage and ensure that the injected resin reaches the backside of the crack where it is needed most. Injection should be done at a slow pace to avoid rupturing the injection port or causing premature crack filler set.

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