Branz Skillion Roof Insulation

You can find some of the examples here.

Branz skillion roof insulation.

Where roof space is restricted low pitch or non existent skillion roof insulation installation is less straightforward but there are still options. The roof space is generally inaccessible with little natural ventilation and the small roof space can accelerate problems with moisture. The branz house insulation guide provides construction r values for common construction types. In high wind zones the placement of vents in metal and tile clad skillion roofs might not be critical.

In an uninsulated house more heat is lost through the ceiling and roof than any other part of the house making the roof the top priority for insulation. Tie down the structure to framing below to resist wind loads. An alternative way to insulate a skillion roof is to install a foam backed sheet material over the existing interior lining. Loose fill insulation is available in glasswool mineral wool macerated paper and wool.

New zealand building code nzbc. Install from above by replacing the roofing. Pitched timber framed roof r 3 3. Recent branz research provides advice on the best place for effective vent openings in low wind zones.

Where the ceiling is removed insulation is better installed after the roof has been made weathertight. Mammoth skillion insulation are high density polyester sections designed specifically for ceilings do not have a roof space or attic above them. Skillion roof insulation mammoth skillion high density polyester sections are designed for the flat and sloped ceilings parallel to the roof line with no attic. Mammoth skillion doesn t loft or increase in volume over time ensuring the required 25mm air ventilation gap to the roof is always maintained.

Skillion roofs need carefully designed and installed ventilation to reduce the risk of moisture related problems p publications. This also provides an opportunity to fit roofing underlay. The product is stiff making it very easy to handle and cuts easily with a bahco insulation saw available from major hardware merchants. For long run profiled metal specifying a trapezoidal profile will allow the roof to be installed at a minimum 3 slope.

Insulating skillion roofs blanket or mat segmented insulation is available in glasswool fibreglass wool polyester wool polyester mix and mineral wool. Some roof designs such as skillion roofs must include ventilation to manage roof moisture.