Using Styrofoam In Attic For Insulation
Insulating an attic usually means you have a lot of room for insulation and you will need high r value so that is why the cheaper options are more popular blown cellulose or blown fiberglass.
Using styrofoam in attic for insulation. Remove any existing pieces of insulation that might have been covering the attic walls until now. Remove the old. Step 2 install insulation boards. Installing foam insulation board in an attic.
Step 3 place caulking and furring strips. Use a chalk line or t square to mark where it needs to be cut. Spray polyurethane foam will provide thermal insulation that will minimize air infiltration which can help to save on heating and cooling costs within the indoor environment. A table saw will also cut the board but it.
You can use a utility knife to cut using the same cut and snap process you use with drywall. Insulation is used in an attic for cross ventilation to minimize potential for moisture accumulation and condensation to help energy savings and moisture control. Measure the space between rafters and cut the board to fit. It provides an r value of 6 per inch of thickness and often comes foil faced to help reflect radiant heat.
A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents. Nothing unusual about that. One common use of extruded polystyrene foam board is for foundation insulation panels. How do you install rigid foam board.
Step 4 cut foam boards.