Question: We have a patio off the back of our house and would like to add a screened porch over it. Our contractor won’t do this without adding a concrete footer which increases the cost. Why must we have the concrete footer?
Answer: The purpose for a concrete footer is to create a solid base for the screened porch to rest on. If the porch base is not at least 38” below finish grade when the earth freezes in the winter it will lift the porch and cause damage to the porch as it rises and falls with the freeze and thaw cycle. This will not only cause damage to the porch but also cause damage to the existing structure. The money spent on a proper concrete foundation is the best money you can spend to assure your porch will remain where you want it. Your contractor is only trying to protect you and your home.