The Liquid Roofing and Waterproofing Association (LRWA) is a UK member organisation of manufacturers of liquid applied coatings for buildings. The association's aim is to educate and inform specifiers, contractors, and the industry as to the properties, correct applications, installation methods, and aftercare of liquid waterproofing systems.
The association was formed in the 1970s and was originally known as the BRCMA (Bituminous Roof Coating Manufacturers Association). The primary purpose of the association was to promote good practice in all areas of the UK bituminous roof coatings industry.
The late 1980s and early 1990s saw the rise in popularity of non-bituminous products and in particular liquid roofing.
Recognising this trend, the association reinvented itself as ELRA (European Liquid Roofing Association), now focusing solely on liquid roofing systems. The 'European' tag reflected the associations involvement in the drafting of European standards for all areas of liquid roofing.
In 2005 a second reinvention took place as ELRA became ELWA (European Liquid Waterproofing Association) in recognition of the wider applications for liquid waterproofing products, for example the protection and waterproofing of car park decks.
In 2010 the association identified a need for an industry voice for liquid roofing, which was and remains the fastest growing sector of the roofing market in the UK. The 'European' label was dropped as the association re-launched as LRWA (Liquid Roofing and Waterproofing Association). [1]
LRWA members fall into one of three categories:
Membrane manufacturers
UK manufacturers (and wholly owned subsidiaries) of liquid-applied waterproofing products. LRWA's membrane manufacturers membership includes 90% of the UK Liquid Roofing market.
Associates
UK manufacturers of ancillary materials and components used in conjunction with LRWA's membrane manufacturer members' liquid waterproofing systems. LRWA's Associate members' specialisms include the manufacture of thermal and acoustic insulation, vapour control layers, drainage, plant and safety equipment.
LRWA's Contractor membership is made up of UK roofing contractors approved or licensed to receive and install the products of LRWA's manufacturer members.
A flat roof is a roof which is almost level in contrast to the many types of sloped roofs. The slope of a roof is properly known as its pitch and flat roofs have up to approximately 10°. Flat roofs are an ancient form mostly used in arid climates and allow the roof space to be used as a living space or a living roof. Flat roofs, or "low-slope" roofs, are also commonly found on commercial buildings throughout the world. The U.S.-based National Roofing Contractors Association defines a low-slope roof as having a slope of 3 in 12 (1:4) or less.
A coating is a covering that is applied to the surface of an object, usually referred to as the substrate. The purpose of applying the coating may be decorative, functional, or both. Coatings may be applied as liquids, gases or solids e.g. Powder coatings.
Waterproofing is the process of making an object or structure waterproof or water-resistant so that it remains relatively unaffected by water or resisting the ingress of water under specified conditions. Such items may be used in wet environments or underwater to specified depths.
Reflective surfaces, or ground-based albedo modification (GBAM), is a solar radiation management method of enhancing Earth's albedo. The IPCC described this method as "whitening roofs, changes in land use management, change of albedo at a larger scale ."
A metal roof is a roofing system featuring metal pieces or tiles exhibiting corrosion resistance, impermeability to water, and long life. It is a component of the building envelope. The metal pieces may be a covering on a structural, non-waterproof roof, or they could be self-supporting sheets.
CentiMark Corporation is a national roofing contractor company headquartered in Canonsburg, Pennsylvania in the United States. The company also has a flooring division, QuestMark, and a Canadian Roofing subsidiary, CentiMark LTD.
A roof coating is a monolithic, fully adhered, fluid applied roofing membrane. Many roof coatings are elastomeric, that is, they have elastic properties that allow them to stretch and return to their original shape without damage.
Membrane roofing is a type of roofing system for buildings, RV's, Ponds and in some cases tanks. It is used to create a watertight covering to protect the interior of a building. Membrane roofs are most commonly made from synthetic rubber, thermoplastic, or modified bitumen. Membrane roofs are most commonly used in commercial application, though they are becoming increasingly common in residential application.
Bituminous waterproofing systems are designed to protect residential and commercial buildings. Bitumen is a material made up of organic liquids that are highly sticky, viscous, and waterproof. Systems incorporating bituminous-based substrates are sometimes used to construct roofs, in the form of "roofing felt" or "roll roofing" products.
On 3 April 2017, Standard Industries acquired Braas Monier Building Group. As of June 2017 and in combination with Icopal, a manufacturer of waterproofing membranes and flat roof membrane systems, Braas Monier became BMI Group.
The Metal Building Manufacturers Association (MBMA) was founded in 1956 and promotes the design and construction of metal building systems in the low-rise, nonresidential building marketplace. A nonprofit trade organization, MBMA's headquarters is in Cleveland, Ohio. The organization consists of Building Systems members that are certified according to standards that have been set by the International Accreditation Service, and Associate members that work in the metal building industry. MBMA has a general manager, and it has a chairman and Board of Directors who are elected by members on an annual basis.
Asphalt roll roofing or membrane is a roofing material commonly used for buildings that feature a low sloped roof pitch in North America. The material is based on the same materials used in asphalt shingles; an organic felt or fiberglass mat, saturated with asphalt, and faced with granular stone aggregate. The installation process, known as Torch On Roofing, is often used on commercial properties in North America.
RoofTG is a manufacturer of stone chip coated metal roof tiles based in Auckland, New Zealand and with plants in New Zealand, United States (California), Hungary and Malaysia. The company sells under both the Gerard and Decra brand names.
Sika AG is a Swiss multinational specialty chemical company that supplies to the building sector and motor vehicle industry, headquartered in Baar, Switzerland. The company develops and produces systems and products for bonding, sealing, damping, reinforcing, and protecting. Currently, it has over 33,000 employees, subsidiaries in more than 100 countries, and an annual sales turnover of CHF 10.5 billion.
Liquid roofing is the process of waterproofing a roof by the application of a hydrophobic liquid roof coating. It can be applied to most roof styles, including flat, pitched, and domed roofs.
Copper has earned a respected place in the related fields of architecture, building construction, and interior design. From cathedrals to castles and from homes to offices, copper is used for a variety of architectural elements, including roofs, flashings, gutters, downspouts, domes, spires, vaults, wall cladding, and building expansion joints.
Specialty chemicals are particular chemical products which provide a wide variety of effects on which many other industry sectors rely. Some of the categories of speciality chemicals are adhesives, agrichemicals, cleaning materials, colors, cosmetic additives, construction chemicals, elastomers, flavors, food additives, fragrances, industrial gases, lubricants, paints, polymers, surfactants, and textile auxiliaries. Other industrial sectors such as automotive, aerospace, food, cosmetics, agriculture, manufacturing, and textiles are highly dependent on such products.
According to EN 13523-0, a prepainted metal is a ‘metal on which a coating material has been applied by coil coating’. When applied onto the metallic substrate, the coating material forms a film possessing protective, decorative and/or other specific properties.
A roof seamer is a portable roll forming machine that is used to install mechanically seamed structural standing-seam metal roof panels, as part of an overall metal construction building envelope system. The machine is small and portable to be handled by an operator on top of a roof. The machine is applied to the overlapping area when two parallel roof panels meet. The action of the machine bends the two panels together to form a joint that has weather-tight qualities superior to other types of roof systems and cladding.