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: Spandrel and infill panels: external finishes to window, door and curtain wall systems.

Requirement: All finishes to achieve combustibility class A2-s1, or better.

We are aware of industry issues with products currently subject to the ban such as boiler flues that have a plastic inner lining, and concerns with the use of paint on masonry walls which is often applied on site making the thickness of paint applied difficult to control. Some buildings require regular application of paint to preserve the integrity of the external walls. However, we are aware of a concern over the fire risk posed by multi-layered paint that does not meet the performance requirements of Regulation 6(3) and 7(2). We are seeking evidence-based views on issues such as these in Question 7.

Is the position indisputable? Yes.

Note: MHCLG's January 2020 update "Review of Ban on use of combustible materials…." is currently consulting evidence on whether paint applied to masonry walls, or multiple applications of paint (as a consequence of maintenance) creates a concern or risk.

December 2018 Amendment

Section 2 Reference: 2(6)(a)(ii).

Reference titles: Any decoration or other finish applied to any external (but not internal) surface forming part of the wall.

Approved Document

Reference title(s): 10.5 and Appendix A.

References: External surfaces. Must comply with Approved Document B Vol 1 Table 10.1.

Definitions: External wall.

MHCLG FAQS / Advice Notes

Reference: Section 9.

Reference title(s): "...panels such as spandrel panels and/or other opaque insulated panels in curtain walls are not exempted in regulation 7(3) and therefore must comply with regulation 7(2).


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.