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, b4 external fire spread, principal works, boundary, unprotected area, external wall, final certificate, fire resisting (Fire resistance), plans certificates, approved document
Subjects: T Technology > TH Building construction > Building standards > fire safety - volume 1: dwellings. 2019 edition - for use in england > Section 12: Resisting fire spread over roof coverings
K Law > The Building Regulations 2010 > B4: External fire spread
T Technology > TH Building construction > Building standards
Date Deposited: 28 Feb 2020 21:18
Last Modified: 13 Oct 2021 19:42

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