See more on different types of insulation.
Loose-fill insulation is usually less expensive to install than batt insulation, and provides better coverage when installed properly. Loose-fill or batt insulation is typically installed in an attic. In addition, if you live in an area with termites, you’ll have to consider how termite protection will affect the choice and placement of insulation in your home and plan for a means of inspection. If radon is an issue where you live, you’ll also need to consider radon and radon-resistant construction techniques as you research foundation insulation options. In addition to insulation, consider moisture and air leakage control in each area of your house.
Caulk and seal around all windows and doors. Do not forget to insulate the band joists.Ħ. (4D) Extend insulation into joist space to reduce air flows.ĥ. Also insulate (4A) any portion of the floor in a room that is cantilevered beyond the exterior wall below (4B) slab floors built directly on the ground (4C) as an alternative to floor insulation, foundation walls of unvented crawl spaces. Apply insulation to floors above unconditioned spaces, such as vented crawl spaces and unheated garages. Insulate all exterior walls, including (3A) walls between living spaces and unheated garages, shed roofs, or storage areas (3B) foundation walls above ground level (3C) foundation walls in heated basements.Ĥ. (2D) Extend insulation into joist space to reduce air flows.ģ. In finished attic rooms with or without dormers, insulate (2A) between the studs of "knee" walls, (2B) between the studs and rafters of the exterior walls and the roof, (2C) and ceilings with unconditioned spaces above. If the air distribution is in the attic space, then consider insulating the rafters to move the distribution into the conditioned space.Ģ. In unfinished attic spaces, insulate between and over the floor joists to seal off living spaces below. The numbered areas shown in the illustration are as follows:ġ. The illustration above shows all the areas of the home where there should be insulation. For optimal energy efficiency, your home should be properly insulated from the roof down to its foundation.