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UKFR Roofing & Insulation Specialists

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Flat Roof Insulation Boards

Browse through our wide selection of flat roof insulation boards, ranging from brands such as Kingspan, Recticel and Rockwool. With insulation board systems ranging from Kingspan TR26 to Rockwool Hardrock, our selection and expertise can provide the best solution for flat roof insulation.

All of our flat roof insulation boards are leading brands in the market, are high performing and have fantastic fire ratings.

Here we have our range of flat roof insulation boards which include the following:

  • Kingspan TR26 and Reciticel Eurothane EuroDeck -  This insulation board has a composite foil facing on both sides, and is compatible with mechanical fixed single-ply membranes and most green roof systems
  • Kingspan TR27 and Recitcel Powerdeck F - This product has a glass tissue facing on both sides and is compatible with non-bituminous fully bonded membranes. Can be fully adhered to and mechanically fixed
  • Rockwool Hardrock - A variety of options that are compatible with most roof applications and has an excellent fire rating.
  • Kingspan TR24 -  Compatible with partially bonded torch applied multi-layer bituminous waterproofing. 

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Why Buy Our Insulation Boards for Flat Roofs?

Our flat roof insulation boards are equipped with fantastic fire rates, efficient performance and high-quality materials used in production. In addition to this, our products and services are provided by experts with professional experience within the roofing and construction industry, so feel free to contact our team today

FLAT ROOF INSULATION BOARDS FAQs

Flat roof insulation allows interiors of any home to feel warmer during the winter, and cooler during the summer. PIR and Hardrock work well as insulation for flat roofs and can be often found in modern constructions. This is due to them being a rigid board with high quality thermal properties compared to older types of roof insulation, such as glass wool.

PIR stands for polyisocyanurate which is a type of rigid foam insulation that's used in building construction

For any flats or homes that are uninsulated, you should aim to insulate your flat roofs with insulation boards totalling around 150mm thickness.

New government guidelines from 2021 have stated that for flat roofs target U-value W/(m2-k) of 0.16 for dwellings, and 0.18 for other buildings that are not classed as dwellings. Below is an example of how to understand how thick your flat roof insulation should be:

0.16 W/(m2·K) for a Dwelling

  • TR26/Eurodeck would be 130mm

  • TR27/Powerdeck F would be 140mm
  • Rockwool Hardrock would be 220mm

0.18 W/(m2·K) for non-dwelling

  • TR26/Eurodeck would be 120mm

  • TR27/Powerdeck would be 120mm

  • Rockwool Hardrock would be 190mm

For more information on U-Value Calculations, please click the following links for all associated brands

Check out the government guidelines here.