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