Alumasc Water Management Solutions is one of the UK’s leading manufacturer of integrated non-combustible rainwater and drainage systems encompassing the entire building envelope. Their comprehensive drainage solutions are specifically suited to the rigours of high-rise building construction, and are compliant with the Building Safety Act 2022; specifically BS EN8579:2020 – A Guide to the design of Balconies and Terraces, which further emphasises the importance of fire safety in the drainage design of balconies and terraces.

The AWMS system incorporates Harmer Aluminium Roof Outlets featuring new extended welded spigots, which connect directly to Alumasc’s Aluminium Downpipes. Both products have a well-established track record of use in the high-rise building sector, but these new developments now present an efficient and compliant package which keeps building industry colleagues up-to-date with ongoing regulatory changes.

The Harmer Aluminium Roof Outlet range is a high-performance rainwater drainage system, manufactured in the UK for market-leading distribution and lead times. Harmer Roof Outlets are suitable for all types of flat roof application, including balconies and terraces. New to the range are aluminium and cast iron threaded spigot options, which also conform to recent changes in building regulations. The new spigots remove the requirement for a mechanical joint within the slab, and connect to our range of downpipe systems eliminating any potential incompatibility. High flow performance and low maintenance provide complete reassurance, which is critical to building drainage design.

Alumasc Aluminium Downpipes have a history of specification on many high-rise projects, and are available in a range of popular profiles. The inherent lightweight nature of aluminium makes them perfect for use at height, whilst their material hardness and fixing mechanisms give excellent rigidity and high impact resistance.

Harmer Roof Outlets and Aluminium Downpipes are both BBA approved powder coated, making the system A2-s1, d0 fire rated. Products are A1 fire rated if not painted.

In any building application where sloped, stepped or irregular surfaces present a challenge, the Harmer Modulock Pedestal System comprises a range of non-combustible, raised pedestals designed to create level flooring. They are manufactured from mild steel with a highly durable zinc nickel, corrosion-resistant finish, making them A1 fire rated. The self-levelling head option is ideal for use with both paving slabs and timber, or a fixed head option is available for use with paving only.

To complete the AWMS fire-resistant offer, the Harmer SML system is a lightweight cast iron soil and waste system, which can also be connected directly to Harmer Roof Outlets. SML provides an innovative, whole-building solution for internal soil, waste and rainwater drainage at ground and below-ground level. The system is low maintenance, easy to install, and boasts excellent tensile and compressive strength. A comprehensive range of fittings and accessories is available.

Harmer SML cast iron soil and waste systems are non-combustible, with the highest product reaction to fire classification as A1 for BS EN 13501-1.

This complete package of non-combustible soil and waste, outlets, downpipes and pedestals is 100% recyclable.

AWMS: Leading the way in non-combustible water management solutions

AWMS non-combustible drainage systems are underpinned by a solid company infrastructure which offers the following:

• three UK manufacturing plants
• national brand-specific sales team and regional support network
• in-house technical team
• design team to fulfil bespoke design requirements
• rainwater and drainage calculations and on-site surveys
• take off and estimations
• in-house, BBA approved powder coating facilities
• unrivalled dedicated UK technical and after-sales support

Alumasc Water Management Solutions is part of the Alumasc Group.
Call 01536 383810 or download the Harmer Technical Brochure.