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Flat roof waterproofing systems

BMI Group supplies high-quality waterproofing systems for a wide range of surfaces, including metal decking, timber and concrete substrates. Our range includes bitumen and synthetic membranes, liquid applied solutions, skylights, smoke ventilation and high performance thermal insulation. They can help reduce air pollution, cut CO2 emissions and improve energy efficiency.

Airtight and waterproof roofing membranes

Our range of cost-effective, reinforced bitumen flat roofing systems are ideal for both new build or refurbishment projects. Offering guaranteed quality, specifiers can select high quality products suitable for a wide range of surfaces. Products range from traditional membranes and underlays, used in both DIY and professional applications, to innovative energy efficient and flame retardant solutions designed for experienced roofing teams. Our extensive range of torch applied, single layer and thermally activated bitumen membranes is designed to cover the requirements of any flat roofing project.

Lightweight single ply membrane systems are perfect for performance-critical roofing systems. Simple, safe and quick to install, they meet highly challenging design briefs, and we also provide excellent thermal insulation as part of that system as well as airtight protection. Our single layer membranes can be used in all sectors, from public and commercial buildings to residential new build and refurbishment projects. Our liquid waterproofing membranes, designed primarily for commercial refurbishment and new build projects, solve difficult construction problems with ingenuity and innovation. Sealoflex, Elastoflex and Parathane are the latest in our cold applied liquid roofing technology. Elastoflex is odour-free and ideal for occupied buildings where solvent-based products would be disruptive. Parabit is a hot applied system, developed for inverted, green and plaza deck roofing systems.

Sustainable and energy efficient

We’re proud of our strong environmental credentials and promote the recycling of products at every stage, reducing the use of raw materials and energy. Many of our products are recognised by industry bodies and meet or exceed environmental standards. Air-purifying Noxite® is a bitumen waterproof membrane that transforms harmful Nitrogen Oxide (NOx) pollution created by road transport, manufacturing and power production. TiO2 (titanium dioxide) granules are incorporated to transform NOx pollutants into harmless nitrates, at lower levels than you’d find in bottled water. Waterproofing membrane systems can help to create cooler, energy efficient roofs with a highly reflective smooth white surface. They’re designed to comply with the energy efficient cool roof concept for new or refurbished roofs.

Our Rooflight solutions can transform interiors with natural light to boost feelings of wellbeing and productivity. They maximise natural daylight with uniform distribution, providing up to three times as much daylight as the same area of vertical windows.

We offer the latest innovations

The development of our thermically activated and self-adhesive bitumen has been a significant development in bitumen membrane technology, allowing combustible and sensitive substrates and details to be covered “cold” keeping all surfaces free from fire risk during application. These innovative membranes are manufactured from modified elastomeric bitumen to the upper surface, and combined with high tack, low activation self-adhesive compounds to the lower surface. These membranes are specifically designed to provide a safe, fast and versatile installation method. Groove and Stripe Technology in our bitumen roofing membranes allows installers to use 25% less gas and allows significantly faster application than traditional torch-on membranes. The Stripes allow vapour dispersion across the membrane.
 We have also developed a range with a fire protection layer for bitumen membranes, shielding against the spread of flame and preventing fire penetration. It’s approved by major insurers.

Helping you see furtherevery day

Our teams don’t just look at the big picture. They’re specialists and they’re here to help you with all the details that will realise your individual roofing vision.

Homeowners

Homeowners

All over the world we’re helping homeowners achieve more with their roof, providing durability, security and aesthetic design as well as added functionality and reduced energy costs that can add value to your property. More on Homeowners

Property developers

Property developers

We’re helping property developers to increase energy ratings, improve sustainability and meet strict building standards with the latest products and on-site protection. More on Property developers

Architects

Architects

No matter how ambitious the vision, we are helping architects bring their ideas to life with high-performance roofing systems that go much further than just stunning design. More on Architects

Distribution partners

Distribution partners

We help our distributor and merchant partners ensure that their customers are satisfied with the highest quality, advanced products and the best technical support so you can be sure the compliance requirements of every project are met. More on Distribution partners

Roofing contractors

Roofing contractors

Designed for straightforward installation, our complete roofing systems and integrated components are helping take commercial, public and industrial construction into the future. More on Roofing contractors