Get matched with top concrete wall service pros in Wheaton, MO

Most of the time, you or your contractor will spray the concrete form and framework with a release agent or oil to prevent sticking. This is common practice with wood and steel forms. For insulated concrete forms, the styrofoam formwork often remains in place after construction, so you don’t need to treat it beforehand. Foam concrete forms made out of melamine also may not need treatment beforehand, as the material naturally won’t stick to the concrete after it’s cured.

Aim for a concrete thickness of at least 4 inches for the walls of your above-ground storm shelter and 3.0 to 3.5 cubic yards of concrete for the base of your storm shelter. If you’re concerned about the thickness of your concrete while building a storm shelter, get in touch with a professional storm shelter builder to make sure your work is up to code and safe. 

It's safe to assume that all exterior walls are load-bearing, or at least have load-bearing characteristics. Some older homes feature porches or bump-outs that don't rest on the home's foundation. However, they still must carry the weight of the roof section they support. Walls containing floor-to-ceiling glass or other non-structural elements must use post and beam configurations to meet load-bearing criteria.

It’s possible to pour concrete if the temperatures are expected to dip below freezing at night, but you need to take some special precautions before you do. Most importantly, you need to make sure your concrete won’t freeze, so the best thing to do is enclose the area and heat it. You should also make sure you’re using cold-weather concrete that’s designed for pouring in cold weather. Use accelerants to help speed up the curing process and avoid cold temperatures from resulting in weak concrete.