Alumasc Water Management Solutions

What Alumasc Water Management Solutions does

Alumasc Water Management Solutions (AWMS) is the UK building-products division of Alumasc Group plc, manufacturing and supplying metal-based water management systems across five sub-brands: Skyline (architectural aluminium fascias, soffits, copings, window surrounds, column casings, door canopies, planters, and rainscreen cladding), Rainwater (aluminium, cast iron, and steel gutter and downpipe systems including GX, AX SnapFix, Flushjoint, Apex Heritage, and Infinity lines), Harmer (roof outlets, modular stainless steel channels, SML cast iron soil and waste, and shower drains), Wade (floor gullies, linear drainage, access covers, grease/sediment interceptors, and non-freeze water points), and Gatic (civil drainage including Slotdrain variants, access covers, and Kerbdrain).

The offering is positioned as a "rain to drain" integrated water management portfolio covering the broadest material set in the UK market (aluminium, cast iron, steel, copper, zinc), manufactured at two UK sites (Burton Latimer for Skyline/Rainwater/Harmer and Halstead for Wade/Gatic) under ISO 9001 and ISO 14001 with in-house BBA-approved polyester powder coating and bespoke design/CAD support. The product range carries multiple third-party certifications including BBA Agrément, Kitemark (Harmer SML), WRAS (Wade non-freeze water points), EN 13501-1:2018 fire ratings, CWCT testing, and the parent-level London Stock Exchange Green Economy Mark.

AWMS sells via Area Sales Managers who conduct free site surveys and project quotations, a national network of 20+ Approved Installers, and regional stockists, with revenue derived from unit-priced trade product sales (annual published price list, currently April 2026), project quotations, and standard versus bespoke colour and profile options. Customer logos span major sports venues (Wimbledon, Tottenham Hotspur Stadium), heritage and cultural sites (Royal Albert Hall), healthcare facilities (Royal Edinburgh Hospital), residential developers (Bell Street Stables, Jersey luxury homes, Newfoundland Tower), education (Shipston High School), infrastructure (Amazon Kent, Alicante Port), and commercial offices (O2 Building, Princesshay Shopping Centre), giving the company vertical exposure across infrastructure, industrial, commercial, healthcare, public sector, food and drink, and residential end markets.

Name

Alumasc Water Management Solutions

Legal name

Alumasc Water Management Solutions

Website

https://alumascwms.co.uk

Company type

Private

Founded year

1945

Operating status

Operating

Headcount range

101–250 employees

Short description

AWMS is the UK metal water management division of Alumasc Group plc, manufacturing and supplying aluminium, cast iron, steel, copper, and zinc rainwater, drainage, and architectural systems to construction projects via direct field sales and a 20+ approved installer network.

Ownership category

akta.pro rank

Product category

Building Water Management Products

SIC

Asphalt Paving & Roofing Materials (2950)

akta.pro primary industry

Gutters, Downspouts & Rainwater Systems (IMADAFAM)

akta.pro secondary industry

Roofing Systems & Waterproofing (Membranes, Shingles, TPO/EPDM, Liquid-Applied) (IMAFAMAA)

Keywords

• Metal rainwater systems
• Architectural aluminium products
• Building drainage solutions
• Civil drainage systems
• Rain to drain water management

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Building Water Management Products: AWMS generates revenue through the manufacture and sale of proprietary metal water management systems, including aluminium, cast iron, and steel rainwater products (Skyline architectural aluminium fascia/soffits/copings, GX gutters, Flushjoint downpipes, Infinity steel systems), Harmer building drainage products, and Gatic civil drainage systems. Products are sold to contractors, specifiers (architects), developers, and via a network of recommended installers. Revenue is derived from product sales at various price points based on material (aluminium, cast iron, steel, zinc, copper) and complexity (standard vs. bespoke). The company operates on a project quotation basis with trade price lists published annually.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Alumasc Water Management Solutions (AWMS) is the UK's leading manufacturer of premium metal water management products, offering an integrated 'rain to drain' solution across five sub-brands: Skyline (architectural aluminium fascias, soffits, copings, column casings, rainscreen cladding), Rainwater (aluminium, cast iron, steel, copper, zinc gutters and downpipes), Harmer (internal building drainage), Wade (external building drainage), and Gatic (civil drainage including Slotdrain and Kerbdrain). Products are manufactured in the UK in aluminium, cast iron, steel, copper and zinc, with in-house BBA approved polyester powder coating, and sold to contractors, architects, developers, and installers across the UK and Ireland.

Product overview

Alumasc Water Management Solutions (AWMS) is a UK manufacturer and supplier offering an integrated 'rain to drain' water management solution across five distinct sub-brands. The portfolio comprises Skyline (architectural aluminium fascias, soffits, copings, window surrounds, column casings, door canopies, planters, rainscreen cladding, and anti-climb profiles), Rainwater (comprehensive rainwater systems in aluminium including GX Pressed, AX SnapFix, Aqualine, Heritage Cast Aluminium, and Flushjoint; plus Infinity Steel in ZMS/Colordur, galvanised, copper, and zinc finishes; and Cast Iron/Apex Heritage), Harmer (internal building drainage including roof outlets, Modulock stainless channels, SML cast iron systems, floor drains, and shower drains), Wade (external building drainage including floor gullies, linear drainage, access covers, grease interceptors, cast iron roof outlets, and non-freeze water points), and Gatic (civil drainage including Slotdrain systems, access covers, and Kerbdrain). The company supports its product range with technical services including drainage calculators, MicroDrainage software support, NBS specifications, BIM/CAD technical downloads, and RIBA-approved CPD seminars. AWMS also received London Stock Exchange's Green Economy Mark recognizing its contribution to the global green economy.

Differentiator

Problem solved

Functional benefit

Brands

• Skyline: Skyline Architectural Aluminium - complete collection of aluminium design solutions including fascias, soffits, copings, window surrounds, column casings, door canopies, planters, and rainscreen cladding.
• Rainwater
• Harmer
• Wade
• Gatic

Products and services

• Skyline Architectural Aluminium system Complete collection of architectural aluminium design solutions including fascias, soffits, copings, window surrounds, anti-climb profiles, column casings, door canopies, planters, and rainscreen cladding, designed for both contemporary and traditional architecture with bespoke manufacturing capabilities and BBA approved polyester powder coating in 26+ RAL colours. Targeted at architects, contractors, and developers on commercial, public sector, and high-end residential projects.
• Rainwater Systems (Aluminium, Cast Iron, Steel, Copper, Zinc) Complete rainwater management systems covering aluminium (GX Pressed, AX SnapFix, Aqualine, Heritage Cast Aluminium, Flushjoint), Infinity Steel (ZMS, Colordur, galvanised), copper, zinc and Apex Heritage cast iron gutters and downpipes, offered in multiple profiles and sizes for new build, refurbishment and heritage applications.
• Harmer Building Drainage Internal building drainage products including roof outlets (aluminium and cast iron), Modulock stainless steel modular channels, A1 fire rated SML cast iron soil and waste systems, floor drains, shower drains, and stainless steel channels, for commercial, healthcare, food service and residential buildings.
• Wade External Drainage External building drainage products including floor gullies, linear drainage, cast iron roof outlets, access covers, grease and sediment interceptors, and WRAS approved YA series non-freeze water points (certified to 10bar) for buildings.
• Gatic Civil Drainage and Access Civil drainage and access solutions including Slotdrain systems (CastSlot, UltraSlot, PaveSlot, FacadeSlot with self-cleaning v-shaped base), engineered access covers, and Kerbdrain for surface water management in infrastructure, transport hubs, ports, distribution centres and commercial car parks.
• Guardian Security Aluminium Downpipes Purpose-designed aluminium downpipes for high security environments such as mental health facilities, with concealed bracketry and jointing making them vandal resistant and anti-climb, fitting flush to the wall with no visible sockets or pipe clips.
• Apex Heritage Cast Iron Rainwater Systems Traditional sandcast cast iron gutters and downpipes for heritage and listed buildings, with bespoke patterns moulded to replicate original Victorian and Edwardian designs, finished with Alumasc certified paint and offering 100+ year service life.

Quantifiable outcome

• Guardian downpipes provide security solution for up to 40 years in residential/suburban areas
• +5 more outcomes

Named customers17 records

Segments7 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• GutterworkscoreChannel Partner/ Reseller/ DistributorGutterworks is an Alumasc approved installer specialising in cast iron, aluminium heritage and contemporary, steel, quartz zinc and copper products for any sized project. They installed water management systems at the Royal Albert Hall (2018), Conningbrook Lakes, and other high-profile projects. Gutterworks has a longstanding relationship with Alumasc and provides full supply and fit services.
• Clyde Valley Roofing & CladdingminorChannel Partner/ Reseller/ DistributorRecommended installer for Alumasc Rainwater and Alumasc Skyline product ranges based in Carluke, Scotland (ML8 5WB). Contact: Andy Spiers.
• Northants Rainwater Systems LtdminorChannel Partner/ Reseller/ DistributorRecommended installer for Alumasc Rainwater and Alumasc Skyline product ranges based in Leicester Forest East. Contact: Paul Shanks.
• Stafford Rainwater Systems LtdminorChannel Partner/ Reseller/ DistributorRecommended installer for Alumasc Rainwater and Alumasc Skyline product ranges based in Cheadle Hulme, Cheshire.
• Plasufix LtdcoreChannel Partner/ Reseller/ DistributorRecommended installer for Alumasc Rainwater and Alumasc Skyline product ranges based in Ipswich, Suffolk. Installed Alumasc Skyline products at Beaulieu Square development. Acts as a central point of contact for supply of products, liaising directly with specifiers and contractors.
• Precision PlasticsminorChannel Partner/ Reseller/ DistributorAlumasc stockist in Jersey for Skyline and Rainwater products. Worked with Godel Architects and contractor Jeff Russ on the Jersey luxury homes development. Provides central point of contact for Jersey projects.
• Weatherseal FacadesminorChannel Partner/ Reseller/ DistributorSpecialist contractor that worked with Skyline products on Shipston High School (INCA 2019 New Build Award winner) and Great Hollands Sports Pavilion. Provided installation for cladding, capping and trims.
• TetracladminorChannel Partner/ Reseller/ DistributorContractor that installed Skyline window and door surrounds at Spitalfields offices, London and Skyline products at Greenfields assisted living complex in Leighton Buzzard.
• Blackdown GreenroofsminorStrategic or Co-development PartnerBlackdown Greenroofs is referenced as a partner for implementing SuDS measures in Welsh new developments. They offer green roof systems that retain rainwater through plant absorption and provide replacement of lost animal habitats. Alumasc BluRoof outlets are used alongside their systems.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Polypipe (Genuit Group): UK-listed manufacturer of plastic and metal rainwater and drainage systems; competes with AWMS across residential and commercial segments, particularly where price is a primary specification driver.
• ACO Technologies: Specialist in surface water drainage, channel systems, and access covers; directly comparable to AWMS's Gatic Slotdrain, Kerbdrain, and Wade linear drainage portfolios in commercial, industrial, and infrastructure.
• Hargreaves Foundry: UK cast iron rainwater and drainage manufacturer; directly competes with AWMS's Apex Heritage cast iron range, particularly on heritage, listed, and high-end residential projects.
• Marley Alutec: UK manufacturer of aluminium rainwater systems, soffits, and fascia — the closest direct metal rainwater competitor to AWMS's Skyline, GX, AX, and Flushjoint ranges, serving the same specifier and contractor channels.
• Hunter Plastics / Osma: Long-established UK plastic rainwater and soil/drainage brands (now under Wavin); compete with AWMS in price-sensitive residential and commercial rainwater segments.
• Brett Martin: UK and Ireland-based manufacturer of rainwater and drainage systems (predominantly plastic, plus some metal); competes with AWMS Rainwater and Harmer product lines across residential and light commercial.
• Lindab: European steel building products group with rainwater systems and steel drainage ranges; competes head-to-head with AWMS's Infinity Steel and Gatic Slotdrain offerings across commercial and infrastructure projects.
• Wavin: Major European plastic and metal rainwater and drainage manufacturer; broad overlap with AWMS's Rainwater, Harmer, Wade, and Gatic ranges across residential, commercial, and infrastructure segments.

Broad incumbents

• Saint-Gobain PAM: Division of Saint-Gobain producing cast iron drainage and rainwater systems; broad incumbent competing with AWMS's Apex Heritage and Harmer SML cast iron ranges on infrastructure and commercial projects.
• Kingspan Group: Irish-listed global building envelope and water management group; overlapping capabilities in insulated building envelope, drainage, and rainwater, with a much broader portfolio than AWMS.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/alumascwms
• Facebookfacebook.com/AlumascWaterManagementSolutions
• LinkedInlinkedin.com/company/alumasc-water-management-solutions

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Alumasc Water Management Solutions