Harmer Drainage Systems

Alumasc Water Management Solutions
Station Road
NN15 5JP
United Kingdom
T: 01536 383810
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Harmer Drainage Systems

Alumasc Water Management Solutions (AWMS) is the first joined-up brand in rain-to-drain integrated water management. Launched in July 2015, AWMS is part of Alumasc Group - the leading UK supplier of premium building products, with almost 90 years’ experience in the industry.

AWMS harnesses the expertise of four trusted brands to provide one simple solution in water management. These are: Skyline Fascias, Soffit & Copings; Alumasc Rainwater Gutters & Downpipes; Harmer Building Drainage; and Gatic Civil Drainage.

Skyline, Alumasc Rainwater, Harmer and Gatic are all big names in their own right, renowned for innovation, quality and outstanding support. Under the AWMS banner, customers benefit from an unrivalled depth and breadth of expertise from brands they know and trust.

Harmer Building Drainage manages water inside and outside the building. Its systems allow designers, contractors and clients to realise the design, performance and installation benefits of fully integrated drainage solutions.

High performance materials – stainless steel, cast iron and aluminium - give optimum corrosion resistance and durability. From above and below ground drainage, soil, waste and rainwater management to food processing and pharmaceutical, each Harmer system moves water with absolute confidence across the built environment.

Harmer Roof Outlets offer an unrivalled choice of roof outlets which combines innovative engineering and high performance materials for use with all types of waterproofing systems and building construction.

Harmer SML lightweight cast iron above and below ground drainage is a dry jointed pipework range at the leading edge of cast iron technology. SML is the ideal soil and waste system which can also be used for rainwater installations. Harmer’s comprehensive range of above ground pipes, fittings and accessories are fully compliant with BS EN 877 and CE Marking.

Harmer Floor & Shower Drains offer the most comprehensive choice in the UK Market. Featuring cast iron, stainless steel, aluminium and ABS high performance drainage solutions, which are versatile enough to meet the demands of all market applications. The range suits virtually any interior drainage application and sets a new standard in quality, versatility and performance.


BSI Kitemark for Harmer’s Below Ground Drainage

HHarmer Building Drainage SML Below Ground range has been awarded BSI Kitemark certification, an assurance that the materials and methods used to manufacture it are fully compliant with internationally recognised standards. The BSI Kitemark Stamp... Read More

New Harmer Modular 120 Stainless Steel Channels

Harmer Drainage adds to its high performance stainless steel channel drains with its new Modular 120 system. The innovative range, available through builders’ merchants, gives more flexibility, and is easier and quicker to install. Modular 120... Read More

Harmer donates floor drains to help local apprentices

Harmer Building Drainage has donated stainless steel shower drains to training provider, CP Assessments, for demonstrations when teaching students how to install grated drainage into wet rooms. “It’s always nice to give a little something... Read More


Harmer SML Soil & Waste Drainage Brochure

Harmer SML Soil & Wa...

By Harmer Drainage Systems

SML Below Ground Overview Brochure Brochure

SML Below Ground Ove...

By Harmer Drainage Systems

Alumasc Rainwater Technical Brochure Brochure

Alumasc Rainwater Te...

By Harmer Drainage Systems

Harmer Roof Drainage Brochure

Harmer Roof Drainage

By Harmer Drainage Systems


Stainless Steel Floor Drains

By Harmer Drainage Systems

Harmer Building Drainage adds to its high...

Harmer SML Cast Iron Soil & Waste systems - Above Ground

By Harmer Drainage Systems

Harmer SML is a lightweight, dry jointed pipework...

Harmer SML Cast Iron Soil & Waste Systems - Below Ground

By Harmer Drainage Systems

Harmer SML Below Ground Drainage Cast Iron Pipes...