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Pitched Roof Insulation

Keep your property warm, energy-efficient, and protected with high-performance pitched roof insulation. Whether you’re upgrading or building new, our premium insulation solutions lock in heat, cut energy bills, and add lasting value to your property. Explore our range here.

man installing pitched roof insulation

Explore our range of products

  • ARC Soffit Slab is designed to fill the void within the soffit, providing a fire, thermal, and acoustic barrier between dwellings.
  • ARC Spandrel Barrier seals the top of the party wall cavity, allowing a zero U-value to be achieved when used in conjunction with ARC T-Barrier vertically.
  • The ARC T-Barrier Pitched Roof is designed to provide a fire and thermal barrier between the top of the party wall blockwork and the under slaters felt.
  • ARC U-Barrier is compressed between the top of the spandrel panel and underside of the roof covering, creating a fire and thermal break.
  • The ARC Wired Tile Batten Barrier is designed to provide a fire, thermal and acoustic break at the party wall between the roof tiles and roof membrane.
  • Universal solution ideal for insulating timber frame walls and can also be used to insulate solid walls internally. Eco-Versal boards are a thermally efficient solution for pitched roof and loft insulation.
    Select options This product has multiple variants. The options may be chosen on the product page Details
  • Celotex GA4000 is a general purpose insulation board for floors, walls and roofs. Providing the user with a range of thermal insulation solutions.
    Select options This product has multiple variants. The options may be chosen on the product page Details
  • Kooltherm K7 is insulation for Tiled or Slated Pitched Warm Roof Spaces

    Select options This product has multiple variants. The options may be chosen on the product page Details
  • Breathable membrane for unventilated pitched roofs and timber frame walls.

  • Kingspan Thermapitch TP10 is a high performance insulation with a fibre-free rigid thermoset polyisocyanurate (PIR) core. It is suitable for tiled or slated pitched warm roof spaces, and has a thermal conductivity of 0.022 W/mK.
    Select options This product has multiple variants. The options may be chosen on the product page Details
  • ROCKWOOL FLEXI® is easy to install and has optimum effectiveness. It is suitable for use all over the home, in pitched roof rafters, framed external walls, internal partitions, intermediate floors, separating walls and floors, and timber suspended ground floors.
    Select options This product has multiple variants. The options may be chosen on the product page Details
  • Insulating the loft is one of the most cost effective and efficient ways to improve the energy performance of a home… and reduce utility bills. ROCKWOOL Roll is the ideal loft insulation solution for horizontal loft application. The mineral wool insulation is an all-round high specification option for thermal and acoustic performance, as well as fire resistance.

Why is insulating a pitched roof important?

Did you know up to 25% of a home’s heat escapes through an uninsulated roof? That’s a lot of wasted energy – and money. Insulating your pitched roof is one of the most effective ways to maintain a comfortable temperature in your home, keeping it cool in summer and warm in winter.

Pitched roofs are a popular choice for both homes and commercial buildings, but without proper insulation, energy costs can skyrocket. By insulating your roof, you’ll enjoy:

  • Significant cost savings: Reduce energy bills by preventing heat loss through the roof. After all, heat rises -don’t let it escape!
  • Improved temperature control: Get a handle on extreme temperatures with insulation of pitched roofs all-year round with better heat retention.
  • Lower carbon emissions: Less energy lost, less heating meters cranked up, less environmental impact you’ll have.
  • Less dampness: Insulation helps prevent moisture build-up, protecting your home from damp and mould.

Warm vs. cold roof

When insulating a pitched roof, you’ll need to choose between a warm roof and a cold roof. Each method offers distinct benefits depending on your needs and building type.

Warm roof:

In a warm roof setup, insulation is installed above and between the rafters, keeping them warm. This approach traps heat effectively, ensuring that rooms stay cosy and comfortable, especially in colder regions. It’s ideal for new builds and when reroofing existing structures because it offers superior thermal performance and maximizes energy efficiency.

Cold roof:

With a cold roof, insulation is placed between and below the rafters, leaving the rafters themselves cold. This method is generally less expensive and takes advantage of the space available in the loft. It’s perfect for keeping the loft area cool while maintaining comfort in the main living spaces.

At Belgrade, we offer top-quality products and expert advice, ensuring you get the best insulation for your roof – every time. Consider your specific needs and consult with our experts to make the best decision for your property.

Frequently asked questions

How to insulate a pitched roof from the inside?

To insulate a pitched roof from the inside, start by preparing the space: ensure it’s clean and check for any signs of damage, as well as measuring all the gaps between the rafters. Then, cut your insulation to the right size and push it into the space. Finally, cover everything with plasterboard or another finish, making sure the joints are well-sealed.

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