Rigid Insulation Timber Frame Roof

However it can be done from the roof side at the time you replace your asphalt or cedar roof with a new aluminum metal roof.

Rigid insulation timber frame roof.

Most building professionals recommend that you vent your roof when using rigid foam insulation as do almost all sip manufacturers. In typical lumber frame construction roof insulation is placed between rafters and then covered up with drywall. This insulation surpasses the values required by current building regulations and is notoriously used in zero carbon fabric and passive house standard timber frame homes. Fiberglass insulation is most commonly used in conventional stick frame construction where there are standard studs.

The plan to finish my timber frame roof. Eaves and rakes overhangs are then floated on top of the foam resulting in zero thermal bridging. Dense pack cellulose dense pack cellulose insulation is the most eco friendly insulation and is made up primarily of recycled paper fiber usually post consumer waste. You only insulate over the interior of the cabin all the overhangs are left free of insulation.

Finally insulation is added to the wall cavities. Build a box around the timber frame air water seal it and then add exterior insulation to completely cover the box. If you have an existing log or timber framed home adding insulation and ventilation can be a major challenge and expense due to demolition costs. In a cathedral ceiling design such as is common with exposed timbered roof systems certain roof coverings notably wood shingles or shakes standing seam metal tile and asphalt shingles perform best when the underside of the roof deck is adequately ventilated.

When the rafters are exposed such as in timber frame houses this technique is not. On top of the ice and water shield we start framing out a cavitiy to hold insulation. I used 2x6s for the framing toenailing the 2x6s into the roof system. This saves money and time.

Decking covered with roof guard polyiso rigid insulation strapping to hold it down 8 inch screws followed by 5 8 sheathing cold roof design and. The basic steps for my project were.