How To Deck Attic With Blown Insulation
They often simplify insulation and air sealing details versus conventional insulation on the floor of the attic that may be compromised by numerous penetrations from recessed lighting fans equipment and ductwork.
How to deck attic with blown insulation. Blowing insulation into walls is best left to the pros because it involves drilling into stud spaces that may contain electrical. Building air tightness would now preside at the top of the building enclosure at the roof deck and attic walls gables. Blow in insulation until the hopper is empty. For the center areas hold the hose level and blow in insulation evenly until you ve reached your level lines photo 6.
Make sure the fill s depth is uniform across the attic. Blown in spray foam batts and blankets. Your options for attic insulation range from radiant barriers to sheets of mineral wool but most homeowners stick with products made from cellulose or fiberglass. Baffles prevent insulation from blocking the vents.
Handy homeowners can install blown in insulation in the attic. Then pivot in place and do the same thing to the other side. Fasten blocking around the hatch or door to allow the material to be installed around this area without escaping. Step 2 drill 3 inch screws through the boards and into the joist where they cross over the joists.
We offer our review of the three most popular types of attic insulation with a look at each one s pros and cons. Step 1 fill the spaces between the ceiling joists with the insulation of your choice rising no higher than the top of the joists. Run the boards down along the side of the attic to create the first row. Place the 1 by 6 boards down over the floor joists in the attic so that they run at a perpendicular angle to the joists.
Step 2 lay sheets of the plywood onto the floor spanning the joists with a 1 2 inch space between the walls of the attic and the edges of the plywood.