How To Deck Attic With Blown Insulation

Building air tightness would now preside at the top of the building enclosure at the roof deck and attic walls gables.

How to deck attic with blown insulation.

Blown in spray foam batts and blankets. We offer our review of the three most popular types of attic insulation with a look at each one s pros and cons. Make sure the fill s depth is uniform across the attic. 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 1 fill the spaces between the ceiling joists with the insulation of your choice rising no higher than the top of the joists. To make it easy to eyeball how level the material is as you blow it in screw depth guides to joists throughout the space. Run the boards down along the side of the attic to create the first row. Then pivot in place and do the same thing to the other side.

Step 2 drill 3 inch screws through the boards and into the joist where they cross over the joists. Handy homeowners can install blown in insulation in the attic. 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.

Baffles prevent insulation from blocking the vents. 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. Seal any gaps around the perimeter of the attic with caulk and install baffles on the roof decking over the soffit vents. Fasten blocking around the hatch or door to allow the material to be installed around this area without escaping.

Move across the attic until you ve hit your desired height at every point.