Sealing Hairline Cracks In Concrete Walls

Cracks and gaps in concrete are more than just an eyesore.

Sealing hairline cracks in concrete walls. Seal cracks in concrete with durable urethane caulk. Outside of hairline cracks larger stress cracks occur when a house settles or the ground beneath it shifts. Unfortunately the curing process causes the concrete to shrink slightly often resulting in hairline cracks. Contents causes of hairline cracks in concreteprevention of hairline cracks in concreterepair of hairline cracks in.

Concrete consists primarily of cement sand gravel and water. Sealing the cracks with quikrete is an easy project for any skill level. You can do it in less than a half hour. Sand clean dry may be used as a filler for cracks an easier approach if you are repairing an irregular crack in a floor.

But these hairline cracks eventually turn into deeper and wider cracks. People often ignore hairline cracks thinking it s not a major issue. Hairline cracks are commonly observed in freshly placed concrete and their occurrence is owed to the phenomenon of plastic shrinkage. Make cosmetic and waterproof repairs to concrete masonry and stucco walls.

As the name suggests this concrete crack sealer is specifically made to deal with hairline cracks. We recommend using backer rods also if sealing wide cracks in concrete walls or floors but first you need to have those cracks evaluated to determine the cause as other important structural repairs could be needed first. As the name implies these cracks are very small about 0 003 inches 0 08mm in width and can be very shallow. As the water in the slurry evaporates the remaining ingredients cure into a hard monolithic slab.

Plus a hairline crack is enough for moisture to seep into the concrete surface and hurt. These types of cracks don t usually pose a threat to the structural integrity of a house but they do allow for a potential opening for groundwater insects and radon gas.