Thatch and wood shingles

Department for Communities and Local Government, (2019) Thatch and wood shingles. In: Approved Document B: Fire Safety - Volume 1: Dwellings. 2019 ed. Section 12: Resisting fire spread over roof coverings, 1 (12.9). RIBA Publishing Publication, London, p. 92. ISBN 9781859469156

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If the performance of thatch or wood shingles cannot be established, they should be regarded as having an EROOF(t4) classification in Table 12.1.
NOTE: Consideration can be given to thatched roofs being closer to the relevant boundary than shown in Table 12.1 if, for example, all of the following precautions (based on the LABC publication Thatched Buildings (the Dorset Model): New Properties and Extensions) are incorporated in the design.
a. The rafters are overdrawn with construction having not less than 30 minutes’ fire resistance.
b. The guidance given in Approved Document J is followed.
c. The smoke alarm installation (see Section 1) extends to the roof spaces.

Item Type: Book Section
Additional Information: mml-maui-text-analytics-keywords
Uncontrolled Keywords: relevant boundary, roof, dwelling type
Subjects: Section 12: Resisting fire spread over roof coverings
B4: External fire spread
Building standards
Date Deposited: 28 Feb 2020 21:18
Last Modified: 29 Sep 2022 21:03

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