Mineral aggregate roof surfacing

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TypeIssue
Series titleCanadian Building Digest; no. CBD-65
ISSN0008-3097
Physical description6 p.
SubjectRoofing; gravel; roofing products; roofs; crushed clay; crushed aggregates; fire hazards; Roofs; Roofs; Couvertures
AbstractMineral aggregate surfacing is applied to built-up roofing to protect the top coating of bitumen from direct sunlight and to reflect solar radiation. It reduces the maximum surface temperature, the seasonal range of temperatures and the short-time fluctuations at the black surface. It thus inhibits weathering of the bitumen and the bituminous felts of the roofing membrane. There are some disadvantages to the use of mineral aggregate surfacing. Apart from the added dead weight, which must be carried by the deck and structure, the principal difficulty relates to inspection and maintenance. The aggregate surfacing hides defects and breaks in the membrane and must be removed to make repairs.
Publication date
PublisherNational Research Council Canada. Division of Building Research
LanguageEnglish
AffiliationNational Research Council Canada
NoteAussi disponible en français : Revêtements des toits en agrégats minéraux
Peer reviewedNo
NRC numberNRC-IRC-934
NPARC number20325200
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Record identifiere6646f6a-9d90-4b45-8cab-0d9e2a6e307d
Record created2012-07-18
Record modified2017-04-27
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