Attic Hardboard Insulation

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.

Attic hardboard insulation.

The attic insulation where air entering the soffit vents flows through the attic insulation. The level of additional insulation will depend on the product chosen and the depth of the rafters. Refer to the membrane manufacturer s current application and specifications manual for proper installation procedures for fiberboard roof insulation. Attic living space seal hardboard cathedral ceiling insulation techniques.

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. In the photo at left the kneewall is the short wall with the door in it. Otherwise the insulation gets compressed or kicked around which diminishes its r value. 5 panels 5 0 out of 5 stars 1 us energy products ad3 reflective foam insulation shield heat shield thermal insulation shield radiant barrier 48 x10ft 40sqft.

All additional insulation must be secured to hold it in place. 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. Yesterday i was doing a home energy rating for quality assurance in augusta georgia and the house i was in had a bonus room. The panels provide a continuous energy efficient surface.

When installing a raised top plate place a band joist at the open joist cavities of the roof framing. This eliminates thermal bridging which is the energy lost through wall studs. Also attic access hatches are notoriously leaky. The studs conduct more heat than the insulation between them.

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. Multipurpose high density insulation kit r10 2 3 8 in. The band joist helps prevent windwashing. 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.

Insulating boards are just one of the many types of foam insulation. Then to make matters worse the semi impermiable hardboard insulation. 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.