Rigid Insulation Timber Frame Roof

Xtratherm thin r is a quality rigid pir insulation board suitable for application in the walls floors and roof spaces of timber frame houses.

Rigid insulation timber frame roof.

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. Build a box around the timber frame air water seal it and then add exterior insulation to completely cover the box. 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. The basic steps for my project were.

Finally insulation is added to the wall cavities. Euroclass a1 fire rated. Most building professionals recommend that you vent your roof when using rigid foam insulation as do almost all sip manufacturers. On top of the ice and water shield we start framing out a cavitiy to hold insulation.

When the rafters are exposed such as in timber frame houses this technique is not. 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. Fiberglass insulation is most commonly used in conventional stick frame construction where there are standard studs. This saves money and time.

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. In typical lumber frame construction roof insulation is placed between rafters and then covered up with drywall. The plan to finish my timber frame roof. Don t worry we will tie the roof down better in a later step.

Eaves and rakes overhangs are then floated on top of the foam resulting in zero thermal bridging. You only insulate over the interior of the cabin all the overhangs are left free of insulation.