Bradford R2.9 Skillion Roof Blanket Provides Design Flexibility

Previously, a 190mm rafter was necessary to achieve the mandatory 25mm air gap between the roofing underlay and Bradford’s previous 130mm blanket. Insulation thickness within skillion roof design has long been an ongoing issue for specifiers.

Bradford’s 115mm thick insulation can be used without alteration to the rafters or roof cavity. This not only provides architects with more design flexibility, but also saves money on the cost of unnecessary timber.

This is a better design solution for architects. The R2.9 rating exceeds the standard required for H1 compliance for zones 1 and 2 in New Zealand*.

Bradford also has a R3.2 blanket at 145mm, and is introducing a R3.6 blanket at 165mm, suitable for 190mm rafter constructions, thereby offering a complete solution for skillion roof constructions.

Bradford’s new skillion roof blanket range is produced using the very successful Arlanda fibre, which gives the product an unprecedented softness designed to reduce irritation during handling.

Both the R2.9 and the R3.6 skillion roof blankets are now available as part of the range. View a Bradford skillion roof blanket datasheet.

*Based on the use of the Schedule Method.

Bradford Gold Skillion Roofing Blanket

Bradford Insulation

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Bradford Gold’s new R2.9, 115mm thick skillion roof blanket has been designed to be used within a 140mm rafter whilst retaining the airspace.

Bradford Insulation has been appraised as a thermal insulation material for walls, ceilings and roofs of buildings within the following scope: framed or part-framed domestic and commercial buildings where the insulation remains dry during its serviceable life. Bradford Insulation must be installed in accordance with the manufacturer's Technical Literature to meet the stated thermal performance rating of the insulation.

In the opinion of BRANZ, Bradford Insulation if designed, used, installed and maintained in accordance with the statements and conditions of Appraisal No. 301 (2008), will meet or contribute to meeting the following provisions of the NZBC:

Clause B2 Durability: Performance B2.3.1(a) not less than 50 years and B2.3.1(b) 15 years. Bradford Insulation will meet this requirement.

Clause E3 Internal Moisture: Performance E3.3.1. Bradford Insulation will contribute to meeting this requirement.

Clause F2 Hazardous Building Materials: Performance F2.3.1. Bradford Insulation meets this requirement and will not present a health hazard to people.

Clause H1 Energy Efficiency: Performance H1.3.1(a) and H1.3.2 E. Bradford Insulation will contribute to meeting these requirements.

This is an Appraisal of an Acceptable Solution in terms of New Zealand Building Code Compliance. Bradford Insulation thermal resistance (R-Value) has been determined by AS/NZS 4859.1 which is an acceptable method.

BRANZ Appraised

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