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Flat Roof Insulation

Stop heat loss, slash energy costs, and keep your building protected from the elements with proper flat roof insulation. Whether you’re tackling a new build or upgrading your current roof, our range of products has what you need for a more comfortable and cost-effective space.

worker installing flat roof insulation

Explore our insulation for flat roofs

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    Ravatherm XPS X 300 SL

    £0.00
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  • Ravatherm XPS X MK

    £0.00
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  • Ravatherm XPS X UB300

    £0.00
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  • EcoTherm Eco-Versal

    £10.00
    EcoTherm Eco-Versal comprises a fibre free rigid polyisocyanurate (PIR) insulation core faced with an aluminium foil composite on both sides.
    Select options This product has multiple variants. The options may be chosen on the product page Details

  • EcoTherm Eco-Deck

    £10.00
    Comprising a fibre free polyisocyanurate (PIR) insulation core faced with tough, exterior grade plywood used as pre-insulated foil-backed thermal insulating decking for flat roofs. It is ready to fix and finish using basic tools and traditional roofing techniques. Suitable for use in new build or upgrading the thermal performance of existing roofs, providing a cost effective means of reducing CO2 emissions and compliance with Building Regulations/Standards.
    Select options This product has multiple variants. The options may be chosen on the product page Details

  • EcoTherm Eco-Protect Plus

    £10.00
    EcoTherm Eco-Protect Plus insulation base boards consists of a premium performance rigid thermoset fibre free PIR insulation core faced with aluminium composite foil on both sides.
    Select options This product has multiple variants. The options may be chosen on the product page Details

  • EcoTherm INNO-Bond

    £10.00
    Eco-Bond comprises a fibre-free rigid polyisocyanurate (PIR) insulation core with a coated glass tissue facing on both sides.
    Select options This product has multiple variants. The options may be chosen on the product page Details

  • EcoTherm INNO-Fix

    £10.00
    Flat roof insulation for use with mechanically fixed single-ply waterproofing membranes
    Select options This product has multiple variants. The options may be chosen on the product page Details

  • EcoTherm Inno-Torch

    £10.00
    Fibre free rigid polyisocyanurate (PIR) insulation core faced with coated glass tissue on one side and bitumenised glass tissue with polypropylene fleece on the other.
    Select options This product has multiple variants. The options may be chosen on the product page Details

  • ISOVER Spacesaver

    £10.00
    Acoustic Partition Roll (APR 1200) is a glass mineral wool roll that can provide high levels of acoustic performance in metal and timber internal stud walls as well as timber joist separating and internal floors. To support ease of installation, it is supplied in 600mm widths for an easy friction fit between stud centres.
    Select options This product has multiple variants. The options may be chosen on the product page Details

  • ISOVER Spacesaver Plus

    £10.00
    Acoustic Partition Roll (APR 1200) is a glass mineral wool roll that can provide high levels of acoustic performance in metal and timber internal stud walls as well as timber joist separating and internal floors. To support ease of installation, it is supplied in 600mm widths for an easy friction fit between stud centres.
    Select options This product has multiple variants. The options may be chosen on the product page Details

  • Kingspan Kooltherm K10 Soffit Board

    £10.00

    Insulation for Concrete Soffits

       
    Select options This product has multiple variants. The options may be chosen on the product page Details

A quick guide to buying flat roof insulation

A quick guide to buying flat roof insulation

Worried about dampness in your property? Incredibly chilly in the winter? Sick of spending a fortune on the heating bill? It might be time to look at insulation, and your roof is a good place to start.

When insulating a flat roof, you have two main options:

  • Warm flat roofs are the most popular method for flat roofs in the UK, and it involves placing the insulation above the roof structure, creating a thermal barrier that prevents heat loss and keeps the building warm. This method is great for reducing energy costs and is commonly used in new builds and re-roofing projects.
  • Cold flat roofs, on the other hand, have the insulation placed between the rafters or below the roof deck, keeping the roof structure cooler. While it’s often more cost-effective, careful ventilation is needed to prevent condensation.

What are the main benefits?

  • More comfortable: Roof insulation ensures a more consistent indoor temperature, eliminating the discomfort of extreme heat in summer and cold draughts in winter
  • Save money: Insulation helps cut down on energy consumption, leading to lower heating bills. Over time, the savings on your energy costs can more than pay for the investment in insulation.
  • Protection: Quality insulation acts as a barrier, shielding your roof from moisture, condensation, and other damaging effects of the weather.
  • Soundproofing: Insulation provides an extra layer of soundproofing, helping to reduce noise from rain, wind, and external sources. Enjoy a quieter and more peaceful indoor space, especially in noisy and busy areas.
  • Energy efficient: increased energy efficiency not only cuts costs but also helps reduce your carbon footprint.

Ready to upgrade your flat roof insulation? Get in touch with our team today for expert advice and top-quality products.

Frequently asked questions

How to insulate a flat roof from the inside?

To insulate a flat roof from the inside, you’ll typically use a cold roof method. This involves placing insulation material, like rigid foam boards or mineral wool, between the joists under the roof deck. Be sure to leave a ventilation gap above the insulation to prevent condensation buildup. Finally, cover the insulation with plasterboard for a clean, finished look. This approach can help improve energy efficiency without disturbing the external roof structure.

How to insulate a flat roof?

Insulating a flat roof can be done using two main methods: warm roof or cold roof insulation. A warm roof involves placing the insulation above the roof deck, creating a thermal barrier that improves energy efficiency and protects against moisture. In a cold roof, insulation is installed between the rafters below the roof deck. Both methods improve comfort, lower energy costs, and extend the roof’s lifespan.

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