Insulated Slab Foundation Cost

A basement foundation is a minimum of eight feet above the footings and provides living and storage space.

Insulated slab foundation cost.

Increasing sub slab insulation to r15 or r20 or more will make floors much more comfortable and reduce heating costs. Insulated concrete forms foundations. A floating slab for a mobile home runs 4 600 to 14 000 while a standard 24 x 24 2 car garage foundation costs 3 100 to 4 800. A typical 1 200 square foot house foundation costs 6 900 to 16 200 for a concrete slab or about 40 000 for a full basement unfinished.

Slab foundation is the least expensive of the three foundations. The added cost for additional floor insulation can be paid back in as little as a couple of years though energy savings. The same variables we used in pricing a slab apply to this foundation. Labor for this foundation will cost about 7 000 for a total of 10 200.

A basement foundation supports the entire structure. Two materials used to construct foundations are icf and poured concrete. Compared with a full foundation a frost protected slab can reduce construction costs in my market by about 20 000 for a house with 850 square feet on the first floor. Because they are easier to insulate slab foundations with stemwalls are preferable to monolithic slabs.

In cold climates most slab on grade foundations include perimeter stemwalls or frost walls that extend 3 ft.