Need Help With a Sealant

[Goodrich_Mike]

I have to seal a space between two walls and need some suggestions. I purchased a house that has an addition. The old basement is block and the new is poured concrete. Where the two meet there is a space of 1/8 to 1/4 inch. Someone in the past attempted to seal it with what looks like ice and water and it failed. I have dug down outside to the footing cleaned the material off the best I can and power washed out the crack from both sides. I need some suggestions on what to use to seal the space. I found some epoxy that Hilti makes but it is over 500 dollars for a kit that has 5 or more times the amount of material I need. Help please !!!!!

Goodrich_Mike

[Pipestone Kid]

GM, I don't know what they use now, but we used to use a sealant called Thiokol. Check with an installer of prestressed concrete wall panels (or a manufacturer) to see what the use.
Jim

[garager]

NP1, is the product that you want to use. It is a bounding caulking for bricks. You cannot buy this at a big box. Find a supply business that sells stones and bricks and blocks, what we have around here is a company thats called Brock White, they mainly sell stuff to Landscapers and Brick Layers.

This stuff is great, one of the best products I have ever found and it is stretchable, which is what you want. 1 bead on two blocks, let it cure, then play it like an accordion.

[biscuit]

What Garager said,

We use that stuff to seal damn near anything that needs needs to be weatherproof, and no call backs for leaks:D

[Goodrich_Mike]

garager and friends

Well after about 7000 phone calls I finally found NP1 in this area. A local paint supply carries it especially for a basement waterproofing company. After a lot of reading and looking up via Google different products this is the one I need. Thanks for the advise there are so many new products on the market today it is hard to make a decision. And unless someone has experience with one you don’t know. I put a lot of time and effort into digging thru clay and such to get the outside open and clean. I am 61 so this is no small effort thanks again.

mike

[biscuit]

Glad you found it, you wont be dissapointed.

[garager]

I'm also glad you found it, I wouldn't have thought that a paint supply would be carrying NP1. But then again, they like to gobble up everything thats in a can or a tube. Clean your walls decent enough, let it dry, apply what you need and you'll never have to worry about it for a long, long, long time.......:cool: