Alumasc Building Products Limited

What Alumasc Building Products Limited does

Alumasc Building Products Limited is a UK-based, wholly-owned subsidiary of Alumasc Group PLC, supplying premium building envelope, roofing, drainage, and rainwater systems for commercial and residential construction projects primarily in the UK and Europe. The company operates as a single-source building envelope provider, integrating eight branded product lines (Alumasc Roofing, Blackdown, Roof-Pro, Harmer Building Drainage, Alumasc Rainwater Systems, AlumascWMS, Gatic, and Rainclear, plus Sure-Foot Modular Support) under one specification-to-installation proposition.

The core product portfolio is built on BBA-certified physical systems: bituminous and single-ply flat roofing membranes, hot-melt structural waterproofing (including Hydrotech, which claims zero product failures in over 50 years), cold-applied liquid roofing, green roof and podium landscaping systems, aluminium and steel rainwater goods, building drainage, and non-penetrative rooftop plant support. Differentiated technologies include Derbigum Olivine carbon-dioxide neutralising roofing membranes and engineered non-penetrative support frameworks. Products are specified at the architectural design stage and installed by a closed network of Alumasc registered contractors, with extended warranties and on-site technical support.

The business model is enterprise field sales with quote-based, project-specific pricing and multi-year warranty terms. Revenue is generated through one-time product sales complemented by technical and project support services. The customer base spans commercial construction (primary), residential, education (e.g., University of Dundee), and government (e.g., Birmingham City Council), with named case studies indicating sustainability-focused and refurbishment work alongside new build. Pricing is not publicly disclosed and requires direct sales engagement.

Name

Alumasc Building Products Limited

Legal name

Alumasc Building Products Limited

Website

https://alumascbp.co.uk

Company type

Private

Operating status

Operating

Headcount range

101–250 employees

Short description

Alumasc Building Products Limited is a UK subsidiary of Alumasc Group PLC that supplies BBA-certified roofing, structural waterproofing, drainage, and rainwater systems to commercial and residential construction projects across the UK and Europe, specified by architects and installed via its registered contractor network.

Ownership category

akta.pro rank

Product category

Building Envelope Products

NAICS

Asphalt Shingle and Coating Materials Manufacturing (324122)

SIC

Asphalt Paving & Roofing Materials (2950)

akta.pro primary industry

Roofing Adhesives, Sealants & Leak Repair (IMADAOAF)

akta.pro secondary industry

Aluminum Value-Added Components (Automotive, Aerospace, Packaging, Building Systems) (IMAKACAM)

Keywords

• Building envelope systems
• Flat roofing waterproofing
• Aluminium rainwater systems
• Green roof solutions
• Building drainage solutions

Headquarters

HQ city

St. Helens

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Building Product Sales: Sale of premium building envelope products including roofing systems, waterproofing solutions, drainage systems, and rainwater products. One-time product sales with extended warranties and post-project support services.
2. Project Support Services: Technical support, on-site support, and application services provided through Alumasc registered contractors for building projects.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Alumasc Building Products Limited manufactures and supplies premium building envelope products including BBA-certified flat roofing and waterproofing systems (bituminous membranes, hot-melt, liquid, single ply), green roof and podium landscaping systems, engineered building services support (edge protection, rooftop plant support), building drainage solutions, and aluminium rainwater systems. Products are sold direct to construction specifiers, architects and contractors, with installation carried out by a network of Alumasc registered contractors and backed by extended warranties and post-project handover support.

Product overview

Alumasc Building Products Limited operates as a single-source building envelope product package, providing premium products for the building envelope and drainage. The portfolio includes Alumasc Roofing (high performance waterproofing solutions with bituminous membranes, blue roof systems, liquid roofing, single ply roofing, and structural waterproofing), Blackdown Roof & Podium Landscaping (green roof systems and balcony finishes), Roof-Pro Rooftop Management (edge protection and rooftop plant support), Harmer Building Drainage (drainage and roof outlets), Alumasc Rainwater Systems (BBA-certified aluminium guttering and rainwater systems), and complementary brands including Sure-Foot Modular Support Systems, Gatic, and Rainclear. All products are backed by technical expertise, project support, and extended warranties with application by fully trained Alumasc registered contractors.

Differentiator

Problem solved

Functional benefit

Products and services

• Alumasc Roofing waterproofing systems BBA-certified high performance flat roofing and waterproofing solutions including bituminous membranes, blue roof systems, cold roofs, liquid roofing, roof tiling, single ply roofing, warm roofs, and structural waterproofing, supplied with on-site and office-based technical support and installed by Alumasc registered contractors.
• Blackdown green roof and podium landscaping Specialist supply, installation and maintenance of green roof systems, balcony finishes and podium landscaping solutions including paving, decking, irrigation systems and planters for construction projects.
• Roof-Pro rooftop building services support Design of engineered, non-penetrative free-standing support solutions for building services including edge protection and rooftop plant support for flat roof spaces.
• Harmer building drainage Single-source innovative drainage solutions covering soil drainage, internal water drainage, roof outlets and systems engineered to last for construction projects of all types.
• Alumasc Rainwater Systems Complete range of polyester powder coated aluminium gutters, downpipes and integrated fascia/soffits for contemporary and traditional architecture, designed to meet industry standards with high durability, design and performance.
• Hydrotech structural waterproofing Structural waterproofing solution with over 50 years of project history and zero product failures, suited to large-scale new build projects requiring durable waterproofing performance.
• Alumasc Derbigum Olivine roofing membrane Carbon dioxide neutralising roofing membrane within the Alumasc Roofing range, applied at projects such as the University of Dundee roofing replacement and providing environmental benefits through Olivine technology.
• Alumasc Infinity Steel Rainwater Metal rainwater system featuring steel construction for durability, designed and supplied for premium residential refurbishment projects.
• Sure-Foot Modular Support Systems Modular non-penetrative support systems for building services on rooftop applications, supplied through the Roof-Pro offering.
• Gatic water management solutions Water management solutions covering drainage and related products as part of the Alumasc water management systems portfolio.
• Rainclear rainwater clearance Rainwater clearance and drainage solutions for construction applications, supplied as part of the Alumasc water management portfolio.

Quantifiable outcome

• Zero product failures in over 50 years for Hydrotech Structural Waterproofing
• +2 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Alumasc RoofingcoreOthersSubsidiary brand providing high performance waterproofing solutions including bituminous membranes, blue roof systems, cold roofs, liquid roofing, roof tiling, single ply roofing, warm roofs, and structural waterproofing.
• Blackdown Roof & Podium LandscapingcoreOthersSubsidiary brand specialising in supply, installation and maintenance of green roof systems, balcony finishes and podium landscaping solutions.
• Roof-Pro Rooftop ManagementcoreOthersSubsidiary brand providing engineered building services support solutions including edge protection and rooftop plant support.
• Harmer Building DrainagecoreOthersSubsidiary brand providing building drainage solutions including drainage, roof outlets, soil and waste systems.
• Alumasc Rainwater SystemscoreOthersSubsidiary brand as UK's leading manufacturer of BBA-certified aluminium guttering and rainwater systems including PPC aluminium gutters, downpipes and integrated fascia/soffits.
• GaticminorOthersSubsidiary brand within Alumasc Group portfolio.
• RainclearminorOthersSubsidiary brand within Alumasc Group portfolio.
• Sure-Foot Modular Support SystemsminorOthersSubsidiary brand providing modular non-penetrative support systems for rooftop applications.

Scale indicators3 records

Recent moves1 record

Expansion highlights4 records

Broad incumbents

• Carlisle Construction Materials: Large North American and European manufacturer of EPDM, TPO, and single ply roofing membranes. Competes with Alumasc in single ply roofing specifications on commercial projects across Europe.
• Firestone Building Products: Manufacturer of EPDM and rubber-based roofing membranes with European operations. Comparable to Alumasc's single ply and liquid roofing membranes, though operating at greater scale across broader geographies.
• Sika Roofing: Division of Sika AG offering single ply, liquid-applied, and bituminous roofing membranes as part of a broader construction chemicals portfolio. Overlaps with Alumasc's waterproofing range but competes across multiple envelope categories rather than specializing in roofing.
• BMI Group (Braas Monier / Icopal): Large European manufacturer of pitched and flat roofing systems including bituminous membranes, single ply, and waterproofing. Comparable to Alumasc Roofing's flat roofing portfolio but with significantly broader geographic reach and a multi-brand strategy.

Direct peers

• Marley Alutec: UK manufacturer of aluminium rainwater systems, soffits, and fascias for residential and commercial projects. Directly competes with Alumasc Rainwater in BBA-certified aluminium guttering and downpipes.
• Soprema: Specialist in waterproofing membranes, bituminous systems, and liquid-applied roofing with UK presence. Competes head-to-head with Alumasc in commercial flat roofing and structural waterproofing specifications.
• IKO Group: Manufacturer of bituminous roofing membranes, waterproofing systems, and insulation products with significant UK and European operations. Closely comparable to Alumasc Roofing's bituminous membrane and warm roof offerings.
• ACO Building Drainage: UK-based manufacturer of building drainage, roof outlets, and water management systems for commercial and residential construction. Directly comparable to Harmer Building Drainage's product range and UK specification channels.
• Yeoman Rainguard: UK manufacturer of aluminium and cast iron rainwater systems for heritage and contemporary construction. Competes with Alumasc Rainwater in premium architectural rainwater installations.
• Bauder: UK-based manufacturer of bituminous, single ply, liquid, and green roofing systems with BBA-certified products. Direct competitor in flat roofing membranes and waterproofing, serving the same UK commercial and residential construction specifier base as Alumasc.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/alumasc-building-products-ltd

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries7 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 Building Products Limited