Insulating Attic Rafter With Chimney

With a helper to load the blower with insulation as needed start at the perimeter of the attic and work toward the attic access door.

Insulating attic rafter with chimney.

Do not use plastic sheeting in this case. Roof insulation configurations for unvented rafter truss assemblies. 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. Find a pre screened local home insulation contractor.

R value for fiberglass or wool batts per inch is between r3 and r3 5. From flat to cathedral in fhb 192. Fill every joist space completely and evenly with the insulation leaving attic vents uncovered. We love our diyers so take up our incentive to improve your attic insulation situation yourself.

For houses with 2 6 rafters it s necessary to increase rafter depth to make room for enough insulation to meet code minimums. 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. 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. 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.

Blown in insulation is installed using blowing machines. With a warm roof the usual process is to split the insulation into two layers. It makes adding insulation to your attic a breeze. Images courtesy simpson gumpertz heger.

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. Rolls are usually used for long expanses such as length of floor for entire attic while batts are fit between studs in attic rafters. If the rafters are deep enough it may be possible to use rigid foam as the ventilation baffles sealing along the perimeter of each piece to create an air barrier then filling the rest of the cavity with batts or blown insulation see ceiling remodel.

You can use rigid foam panels or do as tom silva does with nearly all houses these days. Hire a pro to install spray foam insulation. You get a free blown in machine. Level uneven spots with a rake.

Place the plastic sheeting on top of the rolled insulation. Get a free 24 hour blown in machine.