Specialists In EPDM Rubber Roofing
Flat Roof Repairs With Quick Turnarounds
Traditional Felt Roofs For Reliability
Flat Roofing For Every Property Type
McGill Roofing & Roughcasting provides durable, weather-resistant installations for a wide variety of structures, including garages, houses, offices, and industrial buildings. Flat roofs are particularly vulnerable to standing water and leaks, making high-quality installation and maintenance essential. Whether you are managing a large-scale commercial project or a domestic extension, we ensure your property remains completely watertight. If the elements have compromised your existing system, we provide swift roof repairs to address problems before they affect your internal ceilings. Our team prioritises structural integrity, fitting every system to the highest standards necessary to withstand the unpredictable climate.
Our Single Ply Roofing Installation Process
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Step 1: Site Preparation & Safety
We begin by erecting professional scaffolding to ensure safe access and protection for both our team and your property.
A skip is delivered to site for responsible waste removal.
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Step 2: Roof Strip-Back
The existing roof covering is fully stripped back to the roof trusses, allowing us to inspect the structure and ensure a solid foundation for the new system.
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Step 3: Roof Deck Installation
The roof is reboarded using high-quality OSB decking sheets, creating a strong, level base.
A vapour control layer (vapour barrier) is then installed to prevent condensation and moisture build-up.
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Step 4: Thermal Insulation Installation
We install high-performance insulation boards, designed to:
Retain heat inside the property
Improve energy efficiency
Reduce heating costs
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Step 5: Single Ply Membrane Fixing
The single ply roofing membrane is installed using a combination of adhesive bonding and mechanical fixings, securely fixing it to the decking to withstand weather and wind uplift.
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Step 6: Heat-Welded Seams & Detailing
All joints, seams, and overlaps are professionally heat-welded using specialist hot-air equipment, creating a seamless, watertight finish with long-term durability.
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Step 7: Site Clearance
Once installation is complete:
The skip is removed
Scaffolding is safely dismantled
The site is left clean and tidy
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Step 8: Warranty & Completion
Your new single ply roof is completed to the highest standard and comes with a 15 year guarantee, giving you complete peace of mind.
Why Choose Single Ply Roofing?
Long-lasting and durable
Energy efficient
Lightweight yet strong
Ideal for flat and low-pitch roofs

Flat Roofing Options To Suit Your Needs
We offer several modern systems tailored to specific building requirements. EPDM rubber roofing is a highly flexible, fully waterproof solution that is incredibly long-lasting, making it an ideal choice for garages and offices. For those seeking a traditional and reliable finish, we provide felt roofs for both residential and commercial properties. Additionally, we install high-performance single-ply roofing, which is a popular modern choice for larger buildings and contemporary homes. During the installation process, we can also assess your exterior walls for any roughcasting requirements to ensure your property's entire shell is protected. Our goal is to provide a versatile range of materials that offer longevity and aesthetic appeal.
Why Work With McGill Roofing & Roughcasting?
Selecting the right contractor is vital for the success of a flat roof project. At McGill Roofing & Roughcasting, we combine skilled workmanship with advanced tools, such as drone-assisted surveys, to provide an accurate assessment of your roof's condition. We are fully insured and dedicated to clear communication, offering honest advice on which system suits your budget and property type. Beyond the roof surface, we ensure that your rainwater management is effective by providing comprehensive gutter replacement and repair services. This holistic approach prevents water from pooling or damaging your masonry, ensuring your new installation remains in peak condition for years to come.
McGills have done an excellent job on my roof. From initial inspection, advice and estimate to carrying out the work, the team were punctual, reliable, very hardworking and courteous. They tidied up as they went along and after each day. The finished result is excellent! Thank you.
Jacob’s team replaced the communal roof over a flat I own and did so to an excellent standard Easily the most competitive quote I obtained and the service I received was exemplary. The work started when it was scheduled to start and I was updated regularly as the work progressed. Wouldn’t hesitate to recommend this company and will be using them again

