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PUBLICATIONS > NACRT'99

'THE USES AND PERFORMANCE REQUIREMENTS OF STEEP-SLOPE ROOF UNDERLAYS IN NORTH AMERICA AND THE UNITED KINGDOM'

A Paper presented jointly by Robert J Booth and Keith Roberts at the North American Conference on Roofing Technology, Toronto, September 1999.

Keywords
condensation, ice damming, sarking, tiles, underlay, ventilation, wood rot.

ABSTRACT

The use and performance requirements for underlays used in steep-slope roof systems differ depending on the type of roof system, materials used and climate.

The requirements of underlays in the most common roof systems in North America and the United Kingdom are reviewed in separate sections of this paper. Design and installation guidance for underlays is available from contractor associations and manufacturers.


If you require a copy of this paper please contact us.

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