Commercial

Integrated Water Management Solutions for Commercial Developments

Alumasc Water Management Solutions has a proven track record of delivering high-performance rainwater, drainage and surface water management systems for commercial developments across the UK and internationally.
Our solutions are specified on a diverse range of commercial projects, including office buildings, business parks, retail destinations, hotels, leisure facilities and mixed-use developments. Working closely with architects, developers, contractors and consultants, we provide efficient, compliant and sustainable water management strategies tailored to individual project requirements.
Designed to combine performance, durability and architectural quality, Alumasc systems support effective water management across commercial environments, protecting assets, enhancing building performance and providing long-term value for owners, occupiers and investors.

Commercial Flat Roof Drainage

Commercial buildings often incorporate extensive flat roof areas that are exposed to high rainfall volumes, yet also need to provide maintenance access and support long-term building performance. Alumasc Water Management Solutions offers a complete range of drainage, roof edge and terrace solutions designed to deliver reliable water management, durability and architectural integration across offices, retail developments, education, healthcare and mixed-use commercial projects.
Aluminium Roof Outlets provide efficient drainage from flat roof areas, helping to prevent standing water and protect roof structures. Manufactured from high-quality aluminium, they offer excellent corrosion resistance, long service life and compatibility with a wide range of roofing systems. Harmer AV outlets have the highest flow rates available on the market, reducing the need for additional penetrations and pipework, resulting in overall project cost savings.
Harmer SML Above Ground delivers dependable drainage performance throughout commercial buildings, combining robust cast iron construction with excellent acoustic and fire performance. The system is particularly well suited to offices, hotels, healthcare facilities and educational environments where durability and occupant comfort are essential.
Skyline Copings provide effective weather protection for parapet walls and roof perimeters. They are engineered to deliver clean, contemporary roofline detailing, helping to protect the building envelope and enhance overall architectural appearance.
Modulock Pedestals create level surfaces for roof terraces, plant areas and maintenance walkways above waterproofing systems. They provide a practical solution for commercial rooftop spaces, enabling safe access to rooftop services and amenities.

Commercial Flat Roof Drainage

Pitched Roof Detailing

Commercial developments with pitched roof elements require rainwater and roofline systems that combine performance, durability and architectural quality. Alumasc Water Management Solutions offers a range of aluminium roofline products designed to deliver reliable weather protection that complements modern and traditional commercial architecture.
GX aluminium gutters provide high-capacity rainwater drainage with a contemporary appearance, making them ideal for offices, educational buildings, leisure facilities and commercial developments. Their robust aluminium construction ensures long-term performance with minimal maintenance.
Flushjoint Downpipes deliver a sleek, modern appearance with concealed joints that create smooth, uninterrupted vertical lines. Designed to integrate seamlessly into commercial façades, they provide efficient rainwater management that supports architectural intent.
Aluminium Fascia systems protect roof edges by providing a durable, low-maintenance finish. Available in a range of colours and finishes, they help create a coordinated and professional appearance across commercial developments.
Aluminium Soffit systems complete the roofline with a high-quality finish that enhances building appearance and provides long-lasting resistance to weathering, corrosion and environmental exposure.

Pitched Roof Detailing

Soil & Waste Drainage

Commercial buildings depend on reliable soil and waste drainage systems to support efficient daily operations. Alumasc Water Management Solutions provides complete above- and below-ground drainage solutions designed to meet fire and acoustic requirements for long-term durability and dependable performance.
Harmer SML Above Ground presents a robust cast iron construction, which is widely specified in commercial developments due to its inherent acoustic properties and fire performance. Suitable for offices, hotels, healthcare facilities, retail schemes and educational buildings, it provides reliable drainage throughout the building lifecycle.
Harmer SML Below Ground offers a durable underground drainage solution capable of handling demanding commercial environments. Its strength, reliability and resistance to damage make it ideal for service areas, basement levels and external below-ground drainage networks.
Together, these systems provide an integrated drainage solution that supports efficient wastewater management from roof level through to the underground drainage infrastructure.

Soil & Waste Drainage

Floor Drainage

Commercial environments such as hotels, leisure facilities, healthcare buildings, educational establishments and retail developments require effective floor drainage solutions that combine hygiene, durability and operational performance. Alumasc Water Management Solutions offers a range of floor drainage products designed to meet the demands of high-traffic commercial applications.
Modular 135 provides a versatile floor drainage solution suitable for a wide range of commercial environments. Its modular design allows flexibility in specification combined with effective water management and ease of maintenance.
Cast Iron Floor Drains offer exceptional durability and long-term performance in demanding commercial settings. Their robust construction makes them well suited to plant rooms, service areas, commercial kitchens and other heavy-duty applications.
Harmer Shower Outlets provide efficient drainage for washrooms, changing facilities and hotel bathrooms. Available in a range of configurations, they deliver dependable performance and support modern interior design requirements.
Harmer SML Below Ground completes the drainage network by providing reliable transport of wastewater from internal floor drainage systems to the wider underground drainage infrastructure, ensuring efficient and long-lasting system performance.

Floor Drainage

Commercial Car Parks

Commercial car parks require robust drainage solutions that can efficiently manage surface water in high-traffic areas and exposed environments. Alumasc Water Management Solutions provides a range of roof and floor drainage products designed to help protect structures, improve safety and maintain long-term operational performance throughout multi-storey, underground and surface-level parking facilities.
As part of the Aluminium Roof Outlets offer, Harmer Car Park Outlets present a range of solutions for effective drainage on podium decks, exposed upper-level parking areas and flat roof structures associated with commercial developments. Manufactured from durable aluminium, they offer high load capacity outlets with excellent corrosion resistance, long service life and compatibility with a wide range of waterproofing systems.
Cast Iron Roof Outlets are ideally suited to demanding applications where strength, durability and fire performance are key requirements. Their robust construction makes them particularly suitable for heavily trafficked commercial parking environments and concrete deck structures.
Harmer SML Above Ground provides reliable internal drainage throughout multi-storey car parks and associated commercial buildings. Its cast iron construction delivers excellent durability, acoustic performance and fire resistance, making it well suited to demanding commercial environments.
Cast Iron Floor Outlets provide efficient drainage of internal parking decks, service areas and plant rooms. Designed to withstand challenging operating conditions, they offer long-term performance and help minimise standing water in order to maintain safe surfaces for vehicles and pedestrians.

Commercial Car Parks