Technical guidance & standards

An overview of the UK building regulations and British standards that apply to flat roofing & balconies
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The design guide was prepared by the Technical Committee of the Liquid Roofing & Waterproofing Association (LRWA), which comprises of the representation from all membership categories – manufacturers, contractors and associate members. Based on extensive research and with more than forty years’ experience in the UK, it is the current industry view of best practice in the design, selection of materials, installation and maintenance of liquid roofing systems, and includes reference to all relevant European and British Standards as appropriate.

The British Standards Institution (BSI) is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products.  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.

The Ministry of Housing, Communities and Local Government (MHCLG), now the Department for Levelling Up, Housing and Communities (DLUHC) publishes guidance called ‘Approved Documents’ on ways to meet building regulations.

These contain:

  • general guidance on the performance expected of materials and building work in order to comply with the building regulations
  • practical examples and solutions on how to achieve compliance for some of the more common building situations

Product manufacturers use Agrément certificates to prove the fitness for the purpose of a construction product and its compliance or contribution to compliance with the various building regulations applying in the United Kingdom.  LRWA manufacturer members must have liquid applied membranes that are third party accredited.

Part L compliance refers to building standards that aim to improve the energy efficiency of new and existing buildings in the UK. Part L applies to residential and commercial properties and sets out specific requirements for insulation, heating systems, and ventilation, among other things.

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 – including occupants or residents, visitors and fire-fighting services as well as those in the vicinity of premises.

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