Insulating Attic Rafter With Chimney

If you re considering turning your attic into conditioned storage or living space it s worth changing tactics to insulate between the rafters and wall joists instead of the floor.

Insulating attic rafter with chimney.

If there is a floor you will need to remove it to properly insulate the roof rafters. Level uneven spots with a rake. Blown in insulation is installed using blowing machines. It makes adding insulation to your attic a breeze.

Roof insulation configurations for unvented rafter truss assemblies. Hire a pro to install spray foam insulation. While insulating your attic space with foam can be an effective way to lower heating costs you can use a simple reflective foil material as a cost effective alternative. You get a free blown in machine.

If the plastic sheeting is in pieces overlap the pieces by 8 inches and staple it in place directly to the roof rafters and the wall. If 180mm is to be installed then 100mm board might be introduced between the rafters there has to be a minimum 25mm air gap between the insulation and the underside of the tiles or slates with an 80mm board running across the rafters. From flat to cathedral in fhb 192. By stapling the foil sheets to your attic roof rafters you can reflect the heat that hits the rafters back down into your home s living space.

Images courtesy simpson gumpertz heger. Place the plastic sheeting on top of the rolled insulation. We love our diyers so take up our incentive to improve your attic insulation situation yourself. Do not use plastic sheeting in this case.

Find a pre screened local home insulation contractor. Rolls are usually used for long expanses such as length of floor for entire attic while batts are fit between studs in attic rafters. Ibc dictates acceptable placement and composition of roofing materials in chapter 15 but describes required thermal efficiency of the roof in chapter 13 which references the international energy conservation code iecc the minimum required thermal resistance varies. Get a free 24 hour blown in machine.

R value for fiberglass or wool batts per inch is between r3 and r3 5. For houses with 2 6 rafters it s necessary to increase rafter depth to make room for enough insulation to meet code minimums. With a warm roof the usual process is to split the insulation into two layers. Batt insulation packages contain more square feet than rolls.

Easiest insulation for layperson to install fairly inexpensive r value doesn t fluctuate as with loose fill. You can use rigid foam panels or do as tom silva does with nearly all houses these days.