Regulatory Guidance

LRWA Regulatory Guidance LRWA are members of the Construction Products Association (CPA) and Build UK who work on behalf of the wider industry representing manufacturers and contractors as a collective at government level. Both bodies collaborate with key stakeholders and produce guidance on how to comply with the ever changing regulations. You are here: Home…

Technical guidance

Technical Technical guidance & standards An overview of the UK building regulations and British standards that apply to flat roofing & balconies You are here: Home Page LRWA design guide for specifiers The design guide was prepared by the Technical Committee of the Liquid Roofing & Waterproofing Association (LRWA), which comprises of the representation from…

The importance of reinforcement

LRWA The importance of reinforcement Cold-applied liquid waterproofing, specified predominantly within refurbishment projects, is often overlayed onto existing roofing systems. Reinforcement enhances the tensile strength of the liquid waterproofing, consequently reducing material elasticity. You are here: Home Page The importance of reinforcement Navigating the vast array of liquid waterproofing systems available can often prove challenging,…

LRWA and Rooflight Association Announce Plans to Collaborate

The Liquid Roofing and Waterproofing Association (LRWA) is joining forces with the Rooflight Association to provide specialist knowledge and support across both memberships. Formerly named the National Association of Rooflight Manufacturers (NARM), the organisation rebranded in 2023 and extended its membership to include rooflight installers, specifiers, distributors and other rooflight-related businesses and individuals. The collaboration…

LRWA Technical Meeting (online)

LRWA technical meetings happen three times a year to keep members and specifically their technical personnel up to date on key issues. Key forums to be discussed: Updates from British Standards Committees for fire and flat roofing Updates from Construction Products Association technical committee Updates from National Federation of Roofing Contractors joint flat roofing committee…

LRWA Technical Meeting (online)

LRWA technical meetings happen three times a year to keep members and specifically their technical personnel up to date on key issues. Key forums to be discussed: Updates from British Standards Committees for fire and flat roofing Updates from Construction Products Association technical committee Updates from National Federation of Roofing Contractors joint flat roofing committee…

Fire safety

LRWA Fire safety Approved Document B (ADB) is the government document that gives guidance on fire precautions relating to the wider Building Regulations in England. Collectively these must be adhered to in order to keep people and premises safe. You are here: Home Page Approved Document B (ADB) In August 2019, a new edition of…

British standards

LRWA British standards Key standards that are used within flat roofing and balconies include BS 6229, BS 5250 and BS 8579. LRWA represent members on the BSI committees that have responsibility for these standards. You are here: Home Page BS 6229 BS 6229 is a British standard specifying a code of practice for flat roofs with continuously…

Waterproofing for car parks

LRWA Waterproofing for car parks Liquid applied membranes are regularly specified on multi-storey car parks to enhance the life expectancy and provide a tough, elastomeric, seamless and decorative finish. You are here: Home Page Waterproofing for car parks The specific demands of multi-storey car parks are unique. They are exposed structures and are therefore vulnerable…