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

Definition: Items attached to the external surface of the external wall, for example LED screens, signage, awnings, advertising screens, rainwater pipes etc

Requirement: Any element that is attached to the external wall which does not achieve class A2-s1, d0 or better, and where it is considered that it's inclusion may cause the external wall to fail to comply with B4-(1) must be provided with an assessment.

Is the position indisputable? Yes.

December 2018 Amendment

Section 2 Reference: None.

Reference titles: None.

Approved Document

Reference title(s):  10.14, 10.15(f) and 10.15(g)

Reference: The potential impact of any products incorporated into or onto the external walls and specified attachments should be carefully considered with regard to their number, size, orientation and position.

MHCLG FAQS / Advice Notes

Reference: Section 4.

Reference title(s): "Designers should satisfy themselves that other attachments do not adversely impact on
the risk of fire spread over the wall in consultation with the building control body."


Is the item exempt from Regulation 7(2), in accordance with Regulation 7(3)?: No.

Reference: None.

Statement: None.

If exempt, are there any restrictions on the use of the system, component or material given in the guidance in ADB vol 2? None.

Does B4 still apply?

Yes Reference: B4-(1)

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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.