Sealing Exterior Cinder Block Walls

If you notice large recurring cracks or bulging walls at your house don t try to fix these conditions yourself.

Sealing exterior cinder block walls.

Several masonry patching products such as hydraulic cement do an adequate job of filling cracks in concrete. These products work 100 below the surface to protect from. Concrete block sealer products. Fortunately you have many options for improving a cinder block wall.

Filling a small and moderate crack is necessary to prevent unhealthy conditions in the home. Stucco is similar to concrete but more decorative. A cinder block is much more porous compared to a standard concrete block or poured concrete. They chemically react below the surface without changing the look or color of the block and they won t leave behind a visible surface film.

Also for the exterior walls retaining walls and non load bearing partition walls. Cinder block walls are strong and inexpensive but they aren t always pleasant to look at. Sealing your block is easy simple and will also protect the structure while stopping water penetration into the block and mortar. Deco 20 clear penetrating sealer a green product producing a highly breathable moisture barrier that stops water vapor transmission.

Most block sealing is done with a high performance penetrating sealer that seals and waterproofs while leaving a completely natural sheen and appearance. Manufacturers cast cinder block also known as concrete masonry units from pumice or clay and concrete to form a lightweight hollow block. Call in a structural engineer for an in depth evaluation. Let the cinder blocks wall dry completely you can t apply radonseal or any other sealing product until the blocks are dry.

I am still not sure what cause the blocks to crumble but i m hoping that by applying a sealant or some type of weather protection on the new cinder block walls will keep this from happening in the future. Your cinder block basement wall must be waterproofed to provide a proper home environment. Concrete is an inexpensive way to create a strong cover. The cracks might indicate a more serious structural problem.

Otherwise water will seep in through the walls of your basement. Foundation armor penetrating sealers and water repellents can be used to seal both interior and exterior cinderblock and concrete block walls. The original cinder blocks had crumbled and no longer were supporting the concrete pad adequately. Cinder blocks are classified as permeable to water and water vapor 10 perms.

By waterproofing your basement you will be preventing health dangers and also costly repairs. This water can cause structural damage and grow mold. If you see wet spots you need to let them dry out. Heavyweight concrete blocks are semi permeable 5 perms and less so when the hollow cores are filled and packed with a slurry mix of concrete about 2 perms.