Attic Hardboard Insulation

Yesterday i was doing a home energy rating for quality assurance in augusta georgia and the house i was in had a bonus room.

Attic hardboard insulation.

When installing a raised top plate place a band joist at the open joist cavities of the roof framing. The attic insulation where air entering the soffit vents flows through the attic insulation. Rockwool comfortbatt is a semi rigid stone wool batt rockwool comfortbatt is a semi rigid stone wool batt insulation for exterior wood and steel stud applications in both new construction and renovations. Insulating boards are just one of the many types of foam insulation.

Refer to the membrane manufacturer s current application and specifications manual for proper installation procedures for fiberboard roof insulation. Consider using spray foam insulation as well to seal smaller cracks and gaps. Attic living space seal hardboard cathedral ceiling insulation techniques. Attic space can be used for storage but only if you build an elevated platform above the insulation.

Otherwise the insulation gets compressed or kicked around which diminishes its r value. Then to make matters worse the semi impermiable hardboard insulation. The panels provide a continuous energy efficient surface. It features a unique flexible edge designed to compress as the batt is inserted then spring back expanding the batt against the frame studs to give a complete fill.

The band joist helps prevent windwashing. Bonus rooms are often the least comfortable room in a house and the main reason is that they are the most flawed part of the building envelope especially the attic kneewalls. Adding an inch of hardboard insulation to the outside of the studs in the pacific nw does not provide enough insulating value to keep the temperatures inside the wall above the dew point so it is inevitable that this arrangement will cause condensation within the wall space. You can build an airtight entry attic but you should know that the more it is used the leakier it gets.

In the photo at left the kneewall is the short wall with the door in it. The level of additional insulation will depend on the product chosen and the depth of the rafters. If additional insulation is not required the foil facing of ap foil faced foam sheathing can provide additional thermal performance to the attic by functioning as a radiant barrier. All additional insulation must be secured to hold it in place.

The studs conduct more heat than the insulation between them. Multipurpose high density insulation kit r10 2 3 8 in. Properly installed high density fiberboard roof insulation is suitable as a cover board for use under most built up modified bitumen and most single ply roofing systems.