All concrete uses sand, cement, and water to make a durable compound perfect for a wide range of building structures. So when concrete contractors use this heavy compound to make a roof, it needs the right amount of structural support. Cracks compromise this support, especially when they get so deep that water can penetrate them. This water can also harm the steel reinforcement used to keep the roof solid.
Whether it’s a concrete slab or concrete tile, a sloped or flat roof, repairing roof cracks before they turn into larger problems is necessary, Luckily, if you catch the crack early enough, it’s also an easy repair project! All you need is a clean surface, mortar or roof cement, and an elastomeric sealant.
Step 1: Clean The Concrete Roof Surface
Make sure to clean the whole roof, even if you’re repairing only one crack; you’ll want to shore up the entire concrete surface. A clean surface will ensure that a bond can form between any mortar, the concrete, and the sealant you apply afterwards. Before you can apply any new sealant or waterproof cement, the area has to be free of dust, dirt, oil, grease, and all other contaminants. You can use a pressure washer to quickly remove debris and dirt like dust, mud, twigs, and leaves.
Step 2: Fill The Cracks With Mortar Or Cement
Filling cracks in a concrete roof is a similar job to repairing any other concrete structure. After you have cleaned the crack, moisten it with a small amount of water (don’t soak it), then apply the mortar with a trowel or putty knife. As you fill the crack, get rid of any air pockets by pressing down firmly on the applied product. Finally, smooth the patch, making sure that it’s level with the surrounding concrete.
Step 3: Apply The Sealant
Because the roof is going to experience a lot more extreme weather than any other part of your home, it should be as strong as possible. Spread the elastomeric sealant over the concrete cracks, as well as holes, corners, and other damaged areas.
Apply the sealant to not only the cracks but the entire roof! Keeping a concrete roof waterproof is essential to preventing future concrete cracks and other problems. Once your first coat is dry – give it at least 24 hours – apply a second coating to reinforce the sealant.
When To Call A Concrete Contractor
If you have a concrete roofing system, tons of material is resting on top of everything inside your home, apartment, or commercial space. This is why you should regularly inspect your roof for cracks and take care of them as soon as they’re noticed. Repairing small cracks on your own can be easy, but considering the importance of your roof for the protection of you and your family, do consider hiring a professional concrete contractor if the problem looks extensive.
If you don’t feel ready to take on a project like this alone, or the cracks in your concrete roof have gotten so bad that water is getting through your ceiling and walls, call Fiorino Concrete. Our contractors will be able to help make the roof repairs and advise you on your next steps so that the roof will always protect what’s beneath it!