For sealing small cracks plain old silicone works great.
Great stuff foam under concrete.
While you re at it check out how other ways you can seal insulate and reduce energy costs in high loss areas around your home.
So it s great for creating larger weather tight seals to stop drafts and keep critters out.
Geolift can help to lift existing concrete surfaces and fix those problem areas around your house with much less labor.
Spray foam really is a magical tool for household insulation.
Shore up concrete problems.
In this scenario you will have created a bridge of foam lifting multiple slabs.
Loctite tite foam insulating foam sealant gaps cracks 12 ounce can 4 4 out of 5 stars 2 993 great stuff 99054816 multipurpose insulating foam sealant 12 oz black.
Great stuff big gap filler insulating foam sealant great stuff big gap filler insulating foam sealant with quick stop straw technology offers the same benefits as great stuff gaps and cracks but fills gaps larger than 1 in.
Foam that reacts slowly is great for filling voids but not for raising concrete.
Just twist it onto a can of great stuff and seal around your home for up to 30 days with our restartable drip free design.
If the holes are larger and expanding foam is needed a product like great stuff pond and stone may be just the thing.
Although fiberglass has been commonly used for insulation spray foam can actually outperform it plus with so many ways you can use spray foam this material certainly is handy now only if it could help us out with all of those concrete problems.
The award winning smart dispenser provides a level of precision control and reusability unheard of in a disposable straw.
Geolift works in three steps.
But if you have a large surface area that you are needing to seal you may be looking for something more like liquid rubber it comes in a one gallon can like a paint can and adheres to wood metal and concrete.
The first step is to drill holes in the problem concrete.