09:46AM | 12/08/03
Member Since: 12/07/03
3 lifetime posts
I need some advice on our foundation repair. We are having our faulty foundation repaired ,the Staten Island NY home was built in the 1950's and the foundation was formed with beach sand in the concrete mixture. Well now it is crumbling below us and my architect was shocked to see the foundation in such bad condition. I have a contractor. However, I wish to get a second opinion about the process of rebuilding ,extending and repairing parts of the foundation. The part that they have to rebuild as well as the new extended part of the foundation I want to verify at what is the lowest recommended temperature they can pour any foundation mix and be sure it will set and cure properly, with having a problem with itbeyond reasonable maintenance issues 1 to 10 years. My contractor guarantees their work but how long can they guarantee their work for. Also I heard about new forms they use to build foundations on one of the home improvement shows and that they are insulated to be used in negative degree temperatures. Is that fact or fiction. If it is fact, I want to advise my contractor. Please respond to my e mail address :
Thank you for your advice.


03:40PM | 12/14/03
Member Since: 11/06/02
1281 lifetime posts
ICF's are the foam forms you describe. They are excellent in some situations for cold weather work but can have many drawbacks as well. Your contractor probably already knows about them.

Walls can be poured in temps down to about 20°F without too much trouble. The crete should be air-entrained. He may also call for some amt of calcium added to the mix which creates more heat when in contact with the moisture. They are also likely to mix with hot water.

Concrete makes heat as a byproduct of the chemical reaction. That and covering it with a wrap overnite help protect it. The idea is to keep frost crystals from forming before the setting action gets going fairly well.

The curing process continues indefinitely. In summer, nearly max strength is acheived in thirty days, with close to 90% in only three days to a week. It is a little slower in winter.

There are other more expensive additives to allow for colder winter pours but these are not likely practical for a normal sized home.

You mentioned an archy. He should be able to help you understand all this and communicate with the contractor on specs. That is what archies are for.


03:20PM | 08/29/13
Member Since: 08/29/13
1 lifetime posts
I found a foundation repair company that has good information on their website. Company is Atlas Piers.


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