Key

 

Warranty Position Regulatory Position and Guidance Exemptions Does B4 still apply?
Green indicates we consider our position best practice and not in dispute Grey items cover the December 2018 Amendments, Approved Documents and MHCLG's own FAQs and advice notes Green indicates that the item IS exempt from Regulation 7(2), in accordance with Regulation 7(3) Green indicates that B4 still applies, and refers to relevant parts
Yellow indicates our position has the potential to be subjective   Red indicates that the item is NOT exempt. Refer to Regulation 7(3) Red shows that B4 no longer applies

 

Warranty Position

Explanation/Notes: Roofs are only to be classed as 'external walls' if they exceed 70 degrees and meet the criteria of 7(2)iv).

Requirements: In all other case the normal requirements of Approved Document B, Section 12 apply, in respect to the allowable combustibility and fire / flame spread of the roofing materials.

Is the position indisputable? Yes

December 2018 Amendment

Reference:  7(2)(iv).

Reference titles: Any part of a roof pitched at an angle of more than 70 degrees to the horizontal if that part of the roof adjoins a space within the building to which persons have access, but not access only for the purpose of carrying out repairs or maintenance.


Approved Document

Section 12: Resisting fire spread over roof coverings


MHCLG FAQS / Advice Notes

Reference: None

Reference title(s): None

Exemptions

Is the item exempt from Regulation 7(2), in accordance with Regulation 7(3)?: Yes

Reference: 7(3)(b)

Statement: Any part of a roof (other than any part of a roof which falls within paragraph (iv) of regulation 2(6)) if that part is connected to an external wall.

If exempt, are there any restrictions on the use of the system, component or material given in the guidance in ADB vol 2? See also Dormer walls, windows and roofs, terrace balconies

Does B4 still apply?

Yes: Reference: B4-(1) and B4-(2)

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Disclaimer: The information in this document is believed to be correct in light of information currently available and at the time of publication but is not guaranteed. Neither LABC Warranty nor its agents can accept responsibility in respect of the contents or any events arising from the use of the information contained within this site. The guidance provided does not replace the reader’s professional judgement and any construction project should comply with the relevant Building Regulations or applicable technical standards. For the most up to date LABC Warranty technical guidance please refer to your Risk Management Surveyor and the latest version of the LABC Warranty Technical Manual.