Sealing Exterior Cinder Block Walls

Filling a small and moderate crack is necessary to prevent unhealthy conditions in the home.
Sealing exterior cinder block walls. Cinder blocks are classified as permeable to water and water vapor 10 perms. Most block sealing is done with a high performance penetrating sealer that seals and waterproofs while leaving a completely natural sheen and appearance. Also for the exterior walls retaining walls and non load bearing partition walls. The cracks might indicate a more serious structural problem.
This water can cause structural damage and grow mold. These products work 100 below the surface to protect from. The original cinder blocks had crumbled and no longer were supporting the concrete pad adequately. Your cinder block basement wall must be waterproofed to provide a proper home environment.
Otherwise water will seep in through the walls of your basement. 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. Cracks in basement walls allow water to enter the basement which leads to mold and mildew growth.
Concrete block sealer products. Concrete is an inexpensive way to create a strong cover. Foundation armor penetrating sealers and water repellents can be used to seal both interior and exterior cinderblock and concrete block walls. Deco 20 clear penetrating sealer a green product producing a highly breathable moisture barrier that stops water vapor transmission.
Why cinder block walls leak. 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. A cinder block is much more porous compared to a standard concrete block or poured concrete. Cinder block walls are strong and inexpensive but they aren t always pleasant to look at.
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. Several masonry patching products such as hydraulic cement do an adequate job of filling cracks in concrete. If you see wet spots you need to let them dry out. Home blog cinder block sealers and how to seal cinder block walls.
Fortunately you have many options for improving a cinder block wall. Manufacturers cast cinder block also known as concrete masonry units from pumice or clay and concrete to form a lightweight hollow block. If you notice large recurring cracks or bulging walls at your house don t try to fix these conditions yourself. Sealing your block is easy simple and will also protect the structure while stopping water penetration into the block and mortar.