How To Insulate Heavy Timber Frame Roof

In a built up roof 2 inch lumber is secured to the exterior side of the finish ceiling and covered with standard sheathing materials.

How to insulate heavy timber frame roof. Plastic or tarpaper is applied on top of the sheathing. What is the correct way to insulate and ventilate a log or timber frame construction roof. On top of the ice and water shield we start framing out a cavitiy to hold insulation. Osb wrap steel roof on the outside.

Sheathing is placed on top of the roof timbers. Roof insulation as well as roof ventilation is a topic that comes up in our daily conversations with our clients. Don t worry we will tie the roof down better in a later step. Timber frame truss and purlins.

This saves money and time. There are several ways to insulate the frame. The roof can also be framed and insulated using this technique. 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.

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. 2 x 4 or 2 x 6 rafters are then placed on top of this assembly. This arrangement forms cavities that can accommodate. It is also known for some of the craziest weather extremes and weather swings in the country.

An added benefit are the strong lines that purlins create by running parallel to the ridge beam s. 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. Wools glass fibre mineral natural fibres are the best way to insulate between studs simply because they are compressible.