Basement Floor Insulation Detail

Both extruded or expanded polystyrene have been widely used with success.

Basement floor insulation detail. My insulation of choice is 2. From floor to top of 9 thick walls is 85. Avoid expanded foam insulation the type that has little white beads pressed. 2 2 basement construction details.

Figures 2 11 through 2 13 show configurations with insulation on the exterior surface of basement walls. Insulation options include bubble foil fiberglass foam board and sprayed foam. Figures 2 14 and 2 15 show interior insulation options. Make sure your adhesive is free of solvents which can eat away at the foam insulation.

Basement insulation can be added to interior and exterior walls in addition to the ceiling. Adhere and apply the remaining panels. He s uncertain whether to insulate the slab with 2 inches of foam which he estimates at r 10 to r 14 or invest in 4 inches of foam and double. Although the energy savings of sub slab insulation are not as significant as basement wall insulation.

The above diagram shows an ideal and complete basement renovation beginning with breaking and removing the existing concrete floor. Most older basements have very limited head room and owners are often reluctant to lower it even more by adding insulation to the floor. In this section several typical basement wall sections are illustrated and described. Install at least 4 of uniform sized washed stone underneath the slab floor.

Insulation in your basement walls or the floor over the basement than you would to meet the code. Start by gluing 3 4 inch extruded polystyrene foam insulation to fit against the rim joists and foundation walls. Extruded polystyrene foam can be yellow pink or blue depending on the manufacturer for insulating basement walls. Insulation and fenestration criteria table 402 1 1 insulation and fenestration requirements by componenta climate zone fenestration u factorb skylightb u factor glazed fenestrationb e shgc ceiling r value wood frame wall r value mass wall r valuei floor r value basementc wall r value slabd r value depth crawl spacec wall r value e402 1 1.

For insulation below the slab feldman is considering two types of rigid foam insulation expanded polystyrene eps and extruded polystyrene xps as well as closed cell spray polyurethane foam. It also makes it easy to add a sub slab ventilation. Step by step basement insulation installation. After the cement is set apply a foam board adhesive to the rear of a polystyrene insulation panel then press the panel to the wall.

Basement floor slabs are best insulated underneath with rigid insulation. In the proposed basement wall insulation detail we ll provide a moisture insulation barrier along the face of the foundation wall and then a vapor barrier on the warm side of the framing of the basement walls. This acts as a capillary break to help prevent absorption of ground moisture.