How To Insulate Heavy Timber Frame Roof

Wools glass fibre mineral natural fibres are the best way to insulate between studs simply because they are compressible.

How to insulate heavy timber frame roof.

What is the correct way to insulate and ventilate a log or timber frame construction roof. 2x2 stringers and 3 4 rigid insulation on the inside creating a channel for soffit to ridge venting plank drywall the inside and blow it full of nice cheap eco friendly celullose insulation. The roof can also be framed and insulated using this technique. There are several ways to insulate the frame.

It is also known for some of the craziest weather extremes and weather swings in the country. Don t worry we will tie the roof down better in a later step. This arrangement forms cavities that can accommodate. You only insulate over the interior of the cabin all the overhangs are left free of insulation.

Sheathing is placed on top of the roof timbers. Osb wrap steel roof on the outside. In a built up roof 2 inch lumber is secured to the exterior side of the finish ceiling and covered with standard sheathing materials. Adding purlins between heavy timber trusses is an elegant way to reduce the cost of a timber frame roof because purlins permit an increased on center distance between trusses so you purchase fewer trusses.

An added benefit are the strong lines that purlins create by running parallel to the ridge beam s. When insulating between timbers you have to be able to cut insulation easily and quickly so that it fits tightly against the timber frame and also against the inner surface of the frame be it osb or a membrane. I used 2x6s for the framing toenailing the 2x6s into the roof system. This saves money and time.

Normally the insulation is either built up above 2x ceiling roof decking that is installed on top of the trusses or sips structural insulated panels are installed on top of the timbers the range of insulation is dependent on the thickness of the sips or of the built up insulation. On top of the ice and water shield we start framing out a cavitiy to hold insulation. Plastic or tarpaper is applied on top of the sheathing.