10:42AM | 08/03/04
Member Since: 09/02/02
14 lifetime posts
My home is about 80 years old and the basement was finished I would guess about 20 years ago. I recently gutted it due to having moisture enter my basement when we had torrential downpours last summer. The foundation shifted slightly and enough to open up a few seams in the mortar. I had the walls anchored and new floor drains installed along with a new sump crock and pump. Thank you FEMA. I have also corrected the grading to make sure nothing is diverting water towards the foundation. My gutters are in fair condition and are on the list to replace. They handle the water 95% of the time but still could be replaced.

Q1 - I am in the process of repairing cracks/mortar joints. I'm using Portland cement in lieu of the expensive various patches on the market. I am also cleaning the walls with a diluted bleach solution, scrubbing and rinsing.

Q2 - My walls are cinder block. What are the best options for waterproofing the block walls? I plan to use a paint type of solution such as Drylock or Sunny Dry (a powder coating that is mixed with water and contains a high amount of cement). Does anyone have suggestions on manufacturers and products?

My floor is poured concrete. There is a thin film of what I believe is glue used to hold down the old carpet. Does anyone have any ideas on “sealing” the floor? I’m thinking a few coats of basement floor paint will work. Again, I would appreciate suggestions of manufacturers and products.



06:01AM | 09/01/04
Member Since: 03/23/04
71 lifetime posts
Hope we get an answer, I have damp cinder block walls in my crawl space. It has been suggested I paint them with a waterproof paint


05:15PM | 09/02/04
Member Since: 09/02/02
14 lifetime posts
I have since researched this on the web in other sites. The most frequently recommended paint/sealer seems to be super thoroseal the manufacture web site is

I called and discussed my needs with a product specialist. They were very helpful and I eneded up ordering additional products to seal my cement basement floor and the seal between the wall and floor. Althought the thoroseal was resonably proced the other 2 products I bought seemed expensive. Hopefully they live up to expectations.


04:18PM | 09/04/04
Member Since: 11/06/02
1284 lifetime posts
Any of those will help but the only way to be sure and waterproof your cellar walls is to do it from the outside and to have a perimeter drain to give the water someplace to go.

Excellence is its own reward!



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