Attic Insulation

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Attic insulation can be added to a pitched roof or loft attic space – and it can be applied in a number of ways. In the case of unfinished wooden floors, light weight slabs can be applied. 

When the floor has a finishing layer or is made of concrete, high density boards are common. This also leaves a remaining, walkable surface.

Our range is made from premium stone wool, providing a cost-effective and energy-efficient solution to maintaining consistent temperatures.

Learn all about it – and discover which ROCKWOOL product is right for your building or renovation project.

Table of contents

  1. Why do we need attic insulation
  2. Calculator and savings
  3. Why choose ROCKWOOL solutions
  4. Installations
  5. Sustainability
  6. Downloads and resources
  7. FAQ
  8. Products
Find Inspiration, guides and reports

Why do we need attic insulation?

As heat normally rises, uninsulated lofts and attics are prime places where it can escape from a building. Cold air can also easily enter.

The short-term solution? Turn up the heat when it’s cold – and put the air-con on when it becomes hot.

However, this wastes a lot of energy and leads to bigger heating and electric bills – as well as having a negative impact on the environment.

Installing loft insulation on the attic floor, between and above joists, or on top of floor planking or concrete, can combat this – keeping temperatures at a stable level throughout the year.

Premium insulation helps to:

  • Make buildings more energy efficient
  • Keep homes warmer during winter and cool during summer
  • Improve a building’s carbon footprint

Quality ROCKWOOL stone wool can last the lifetime of a building1, passing on the savings to the people who live and work in those spaces for decades to come.

Relevant resources
7 facts about. Durability and stone wool insulation
PDF
251.0 kB
8 facts about. Stone wool’s mechanical performance
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293.2 kB

Calculator and savings

When installing batts, measure the length and width of the floor to calculate the total surface. Then, determine the insulation thickness required, based on the construction build and thermal regulations. Use these figures to work out the amount of m² you’ll need.

Attic insulation is normally installed by a professional installer, to do it quickly and securely. Taking the surface area and the required installation thickness will give you the information needed to calculate the amount of insulation to be applied.

More detailed information on how to calculate the amounts needed, and tools to provide you guidance as to the thermal performance, can be found on local web pages.

Learn about energy efficiency
Insulation, construction, roof, attic, loft

Why choose ROCKWOOL solutions?

Our attic insulation solutions provide first class performance, are easily installed and need no maintenance. Lasting a lifetime, they are a safe and comfortable choice.

ROCKWOOL insulation is made from stone wool2. Our entire range harnesses the power of these natural materials, creating insulation that is:

  • Fire resilient – ROCKWOOL stone wool insulation is A1 classified – withstanding up to 1000°C.3
  • Thermal regulating – tiny pockets of air are trapped between the stone wool fibres securing a thermal performance that can last the lifetime of a building1.
  • Noise absorbing – can reduce noise and vibration from urban transport – including up to 40 per cent near airports.4
  • Robust & adaptable – stone wool can be shaped, compressed and adapted to different loft designs – retaining its stability, without sagging.5
  • Water absorbing & repelling – keeps water out but allows vapour to pass through and escape.6
  • Rot resistant – this premium material is resistant to rot and mould – a common problem in many attic spaces.
  • Reusable & recyclable – when the insulation is no longer needed for a building, it can be converted into new stone wool.7
  • Accreditations - our products meet all requirements according to international and national standards. In Europe they are covered by EN14064 for loose wool (granulate), EN 13162 for slabs and rolls, and EN13501 for fire performance. National standards are covered through further local certification schemes.

 

 

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Through the relative high density and volume in combination with the closed layer, ROCKWOOL loft insulation also improves the acoustic performance of the floor – reducing external sounds coming into your sleeping room and providing peace of mind.
The intrinsic good fire performance and high fire resistance will further set your mind at ease.

Roger Peeters

Global Product Manager, ROCKWOOL Group

Additional Applications

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Insulation

Exterior Wall Insulation

Exterior walls are key for combatting heat loss in buildings. Improve energy efficiency – and gain other benefits – with ROCKWOOL external wall insulation.

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Interior Wall Insulation

Interior wall insulation reduces heating bills and boosts indoor comfort. Discover the benefits and strengths of ROCKWOOL wall applications today.

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Floor Insulation

ROCKWOOL floor insulation is made from premium stone wool and can improve a building’s thermal and acoustic performance. Discover its benefits today.

The effect of the installation can be felt immediately. No more cold draughts through cracks in the ceiling, or the uncomfortable feeling of a cold surface.

Roger Peeters

Global Product Manager, ROCKWOOL Group

Sustainability and energy efficiency

We want to enrich modern living for people and wider society, with products that are both life-enhancing and sustainable.

ROCKWOOL products are made with these core aims and values in mind. They use high-quality, stone wool materials to ensure new buildings are fully insulated.

Roll Insulation, Loft, Attic

ROCKWOOL pitched roof insulation is designed to be:

  • Affordable
  • Energy efficient
  • Environmentally friendly

A key aim is to ensure towns and cities built today are sustainable for tomorrow. Acoustic solutions also provide extra protection from the sounds of towns and cities, creating a better quality of life for future generations.

 

Energy Efficiency

Downloads and resources

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Resources & Support

ROCKWOOL Commercial Resource Library

Our digital library is your one-stop destination for high- performance insulation. Access downloads here by product or project

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Consulting and Calculation Support

Building Science and Technical Services

Our technical team provides product, application and building science support for architects, designers, specifiers, builders, and anyone seeking technical assistance with the use of stone wool insulation.

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R&D

Research & Development

At ROCKWOOL, we aim to provide state of the art, evidence-based knowledge and guidance when it comes to building enclosure design.

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Why stone wool?

Get The Facts about our stone wool insulation

Learn about the qualities and benefits of stone wool insulation.

FAQs

How long does attic insulation last?
What is the thermal requirement for attic insulation?
Is batt insulation better than blown?

Attic Insulation Products

20221101 RWNA PHO 1181

ROCKWOOL Comfortbatt® thermal batt insulation for exterior wall cavity wood and steel framing

Comfortbatt® is a stone wool insulation thermal batt for use in both new residential construction and renovations. A unique, flexible edge helps maintain R-values.

201806-05 RWNA PHO225
Where to buy

Dealer Finder

Where can you buy ROCKWOOL stone wool insulation? Our Dealer Finder will help you find your closest distributor or store that carries ROCKWOOL products.

Our products are diverse and contribute to shaping a circular economy, enhancing resource efficiency, and nurturing the safety, health and wellbeing of people.

ROCKWOOL Group