Spray Foam For Pitched Roofs
About Spray Foam For Pitched Roofs
Whether you’re looking to insulate a new build property or an existing home, spray foam offers superior thermal performance.
When insulating the pitched roof, you’ll need a solution that offers airtight, thermal yet breathable performance. Both our Sucraseal open cell or Nexseal LE closed cell foams are BBA-certified for their suitability in the pitched roof environment.
Speed
Spray Foam is fast and effective to install, saving time and money
Thermal
Spray Foam offers one of the best thermal insulation values per inch
Airtightness
Spray Foam insulation is the only true airtight insulation system
Speed
Spray Foam is fast and effective to install, saving time and money
Thermal
Spray Foam offers one of the best thermal insulation values per inch
Airtightness
Spray Foam insulation is the only true airtight insulation system
Where To Use Spray Foam For Pitched Roofs
Spray foam insulation can be used in pretty much any pitched roof environment provided the roof is in good condition and free from leaks. In instances where there is a high resistance, bitumen felt style membrane, a ventilation void should be created between the insulation and membrane. Alternatively a vapour control layer can be used. For low-resistance membrane roofs, the spray foam insulation can be applied directly to the membrane without the need for a ventilation void. Spray foam is deemed to be breathable and promotes a vapour open building assembly. Both Sucraseal and Nexseal LE can be used in pitched roofs provided the BBA certificate is followed.
Retrofit Homes
Perfect for existing homes, our breathable Sucraseal open cell spray foam is the perfect way to control the climate in your home. A warm roof system will help your entire home to retain the heat during cold winter months, working in reverse to keep heat out during hot summer months.
New Build Construction
With U-Values targets becoming increasingly onerous, spray foam is the insulation solution that helps to reduce rafter space, saves time and eliminates wastage. If you’re working on a building project, we can help reduce your labour time and keep your timeframe on track with spray foam.
Self Build Homes
When you’re pouring blood, sweat and tears into building your very own Grand Design, it’s important to make sure your home is energy efficient and that you feel comfortable once you move in. Our specifications team can help you make the right insulation choices from the start.
What Our Clients Say
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How We Help You

Enquire
Get in touch today to get the ball rolling

Specify
Let us specify the requirements for your project

Pricing
We’ll provide you with a budget price range

Install
Use one of our ThermoFoam-approved installers

Warranty
Once installed, we provide a 25-Year Product Warranty
Gallery
Check out our Gallery where you will find some photographs of installations we’ve completed in the past. Whilst spray foam is insulation and not decoration, our experienced installation teams will always endeavour to provide a neat and tidy finish to the insulation. Nexseal LE closed cell is easier to achieve a neater finish whereas Sucraseal Open Cell expands at a faster rate to leave an undulated finish.




FAQs
A warm roof system is the modern way to insulate your home. Most of the homes in the UK still rely on outdated methods of insulation at floor level, otherwise known as a cold roof. You will most likely be familiar with seeing layers of fibreglass insulation on the floor of your loft. This method of insulation is unreliable as it allows cold air to flow in through your roof space. The dense cold air will try to sink into your property and will reach what’s known as the condensation point, where rising warm air hits the cold and condensates.
Importantly, spray foam insulation comes in two forms, a low density open cell foam that’s perfect for insulating retrofit roof spaces, new build roofs, walls and floors. It’s also a great product for reducing sound transmission and its used extensively as a void filler between floors, walls and other areas where sound transfer can be problematic. Open cell is not as thermally efficient compared to closed cells foams therefore, a greater thickness will be required for a like for like thermal comparison with closed cell foam, however, as an extremely breathable product, many customers prefer open cell.
It’s important to remember that an install of spray foam insulation is a chemical spraying process that releases vapours into the air but with extraction, this will dissipate quickly. We’ve worked hard to minimise the impact on your health and the environment by introducing water-based blown agents that contain no harmful VOC’s or HFC’s. Once spray foam insulation has been installed, it fully cures within a matter of hours and remains completely inert for its lifespan.
Spray foam insulation is made from recycled plastics known as polyurethanes. Present in many of our household items, cars and other items, polyurethane is one of the worlds most popular products! The raw material comprises of two chemical parts that combine during a mechanical and scientific process to create a warm and fluffy layer of foam insulation. If you are familiar with products such as Celotex or Kingspan, ThermoFoam spray foam insulation is of a similar chemicalur structure, it’s simply applied differently to create airtightness and enhanced thermal performance.
Spray foam insulation is created in situ which mean the install technicians create the chemical reaction that makes the foam. Although an install of spray foam is a reasonably industrial process, it’s completely handled by our technicians from start to finish and we always leave your home clean and tidy! The spray foam equipment is contained within a long wheel base van, comprising of a compressor, generator, reactor, heated hose and the chemical drums. The only element of the spray foam equipment that enters your home is the heated hose and we ensure that sheeting is laid to your flooring to protect your home from any dirt or mess.
This depends on the outcome of hydrothermal calculations that we prepare on a case by case basis prior to the install. In non-habitable lofts, a Vapour Control Layer is generally not required, however, in habitable rooms such as dormer bedrooms, a VCL is usually always recommended and becomes mandatory when hydrothermal calculations are performed.
Our Products
Check out our BBA Certified Spray Foams
Our range of open and closed cell spray foams are industry-leading, BBA-Certified, use recycled materials and contain water-based blowing agents.