Pitched Roof Insulation

Effective pitched roof insulation offers additional thermal comfort, sound protection and exceptional fire resistance

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Pitched Roof Insulation

The pitched roof or attic area of a building can be insulated in many ways. Based on local building traditions, requirements, and regulations in combination with the usage of the loft, ROCKWOOL solutions can provide you with the right solution for new-build properties as well as renovations.

Effective pitched roof insulation offers additional thermal comfort, sound protection, and exceptional fire resistance, making it ideal for residential and commercial properties.

Our products are made from premium-quality stone wool, with solutions available for pitched roof insulation below, between, and over rafters, as well as insulation that is placed under the roof. We offer high-performance systems and solutions for homes and businesses.

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Why do we need pitched roof insulation?

In tropical climates, a substantial amount of heat is gained or lost through the roof of an uninsulated home.

As heat penetrates the building - potentially raising temperatures to uncomfortable levels. Poor insulation can be costly for property owners and tenants, as spending on cool residential and commercial buildings can be expensive.

To avoid costs and improve living conditions, insulating a pitched roof is among the most popular construction methods of today. Effective insulation can not only help enhance comfort but help reduce air-conditioning costs by up to 40%.

With insulation installed below, above, and between the rafters of a pitched roof, it enhances the aesthetic and water tightness of the roof as well as maximizes the weather resistance of your home.

As noise pollution continues to become a major problem in towns and cities¹, properly insulated pitched roofs can also help to create a peaceful living environment.

Our products help to:

Conserve energy – and reduce bills
Reduce noise pollution
Prevent heat gain
Provide fire protection

With ROCKWOOL pitched roof insulation, your building is protected for its lifetime.

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Calculator and savings

Pitched roof insulation is an affordable and energy-efficient solution for your project or refurbishment. Effective roof insulation can prevent heat from entering or cool air from escaping your roof space, helping to reduce energy bills substantially.

When working out how many ft² you will require, whether you use rolls or slabs as your insulation material, we can match the thickness of the insulation to almost any specification – depending on your needs.

Use our ROCKWOOL U-value calculator to determine the thermal performance of the building's roofs and possible cost savings. For more details on the technical specification, visit our ROCKSPEC Specification Toolkit.

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pitched roof illustration over the rafters

Why choose ROCKWOOL solutions?

ROCKWOOL pitched roof insulation is designed to offer optimum thermal, fire and acoustic performance benefits. It will not slump or sag, ensuring your roof space is both safe and sound for its lifetime.

Majority of heat gained is through a non-insulated pitched roof. We offer a number of solutions to insulate your pitched roof either at the rafter area or in the loft floor. More details are available from the below application pages.

ROCKWOOL insulation prevents heat gained and offers many other benefits too, including the seven strengths of stone:

Fire resilience – our pitched roof insulation is non-combustible, offering peace of mind for any roof or ceiling conversions.

Thermal properties – ROCKWOOL pitched roof insulation prevents heat transfer by keeping buildings cooler all year round.
Circularity – our insulation is designed to last for the lifetime of the building², helping to improve your building’s carbon footprint.
Acoustic capabilities – our insulation can reduce noise substantially especially around urban transport – like highways and airports – for a quiet and relaxed environment.³
Rot resistant - our pitched roof insulation gives you the ultimate peace of mind, with added resistance from rot and decay.

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By installing insulation in the pitched roof area with ROCKWOOL insulation, you not only create a thermal barrier, but also increase the acoustic and fire performance of the construction. You also enable the use of the attic area as a living space – such as a game-room for the kids, an extra bedroom, or even a bathroom for your convenience.

Roger Peeters

Roger Peeters, Global Product Manager, ROCKWOOL Group

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Installation

Installing ROCKWOOL insulation can be done by local contractors or installers. Always take the necessary precautions and follow the stated advice and instructions.

Local building traditions and product specific requirements are best taken from our local web pages. Rafter line insulation commonly used in, for example, Germany or Poland, requires a different approach as for example the installation of loft granulate often used in France or Scandinavia.

Top tips if you are preparing to insulate a pitched roof:

Ensure you have accurate measurements of the area you’re insulating.
Inspect all existing joists and electrical cabling, to ensure proper condition.
Ensure water tightness and breathability of the outside part of the construction. If necessary fitting a suitable membrane on the outside of the roofline.
Ensure proper ventilation of the construction when required

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Sustainability and energy efficiency

Our products are sustainable, energy efficient and naturally resilient. Made from stone-wool, our pitched roof insulation is created using one of the most abundant natural resources on earth⁴.

Our values are embedded into everything we do – from the projects we work on, to the products we manufacture. We’re committed to creating effective and sustainable insulation that improves modern living conditions and the environment.

Our insulation supports comfortable and sustainable living for the future by helping to create habitable roof and loft spaces. While being fire resistant, it also provides the both domestic and commercial properties require.