Flat roof insulation is crucial for improving the energy efficiency, comfort and living standards in buildings.
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Flat roof insulation is crucial for improving energy efficiency, comfort and living standards in buildings. In an uninsulated home, up to 25% of heat is lost through the roof.1
We offer a versatile range of premium-quality stone wool roof products – providing excellent thermal, acoustic and fire-resistant solutions for both commercial and domestic projects.
As heat normally rises, most energy loss is usually through the roofing area. Flat roof insulation is an essential measure that can enhance the energy efficiency of a building and reduce fuel costs.
Creating more effective flat roof barriers also offers you protection from the unpredictable outdoor climate, including overheating in summer conditions, rain and snow.
From high rise apartment blocks to residential designs, from industrial units and large commercial facilities to schools and hospitals, flat roofs are an integral part of a modern building design.
Indeed, terraces, rooftop gardens, blue roofing, water retention and solar usage are becoming ever more popular, with the trend for functional roof spaces bringing more value to the users and owners of buildings.
Flat roof insulation is very cost competitive when saving energy consumption overall – and provides a key, valuable investment for the future.
In addition to this, it often has a relatively fast payback time in terms of money, energy and carbon footprint.
There is no ‘one size fits all’ answer to how much you will require. Since there is usually no limitation to the installation height on a roof, and ‘the sky is the limit’ so to speak, insulation thickness can be adjusted to almost any possible customer specification.
The average installed density of stone wool flat roof insulation globally is around 90 – 160 Kg/m3.
Use our U-value calculator to work out the potential energy savings you could make. Also
To simplify the specification of flat roof insulation, ROCKWOOL has launched a new Flat Roof Zoning Tool. This online Flat Roof Zoning Tool helps specifiers optimise insulation design by zoning flat roofs according to how each area will be used.
ROCKWOOL flat roof insulation is designed to enhance modern living, using the natural power of stone wool to provide robust energy efficiency and protection.
Made from volcanic rock and effective for the lifetime of a building2, ROCKWOOL products give you the ultimate peace of mind.
Added fire protection
Our insulation is A1 or A2, s1, d0 classified, being non-combustible and built to contain fire – preventing it from spreading.5
Effectiveness
As 66% of energy consumption in buildings is used for heating, cooling and ventilation6, our insulation helps maintain an optimum indoor temperature and climate.
Acoustic improvement
Sound reduction is another key feature. It can help to absorb and block out external noise from sources such as air traffic and rain noise.
Adaptability
Our insulation comes in a variety of shapes, and can be modified with ease to fit your design and architectural needs. To avoid ponding water on the roofing membrane, ROCKWOOL ‘tapered’ solutions can be used to make sure that water is guided to the outlets of the roof.
Robust and durable
ROCKWOOL roofing boards are dimensionally stable – having no movement when exposed to heat and cold.
Value and expertise
We work with industry experts enabling a project specific specification to meet construction requirements.
Sustainability
Stone wool is one of the most recyclable and sustainable materials in the building world.7
Accreditations
ROCKWOOL products meet all requirements according to the international Mineral Wool Standard EN13162. National standards are covered through further local certification schemes. Most ROCKWOOL flat roofing solutions are FM-Global approved – which is important for industrial projects.
To achieve the very best performance demands commitment, skill, and passion. The team behind the recent reinvention of the Royal Academy of Music in Regent’s Park, London called on all three qualities in creating stunningly beautiful, acoustically brilliant and inspiring spaces for staff and students.
Creating impeccable acoustic environments and ensuring control not only of how sound travelled around the spaces as well as ensuring effective isolation from other spaces within the building proved a key challenge of the project.
In order to complement the structure of the building and ensure each space was acoustically isolated, All Metal Roofing specified insulation from ROCKWOOL for the Royal Academy of Music project.
Read more about The Royal Academy of Music here
When installing there are a few key things to bear in mind:
Key tips:
At ROCKWOOL, making products that improve energy efficiency is at the heart of what we do. But we also want to ensure the materials we make, and how we make them, are sustainable too.
All our stone wool insulation is made from volcanic rock that is naturally produced and continually replenished by our planet. Likewise, our production processes are designed to reach ambitious sustainability goals.
Our production techniques include circular economy practices, reprocessing other businesses’ waste instead of virgin raw material as well as our own. We’ve also created our stone wool insulation to be recyclable and made sure it can be re-used, without affecting its quality.
Because of this, after just 200 days, ROCKWOOL insulation will have saved more carbon than was used in its manufacture.
For further information, Environmental Product Declarations (EPDs) are available for all of the stone wool insulation products manufactured in the UK. To request an EPD for flat roof insulation, please contact technical.solutions@rockwool.com.
The Energy Savings Trust is a great source of advice on financial support schemes available for roof insulation.
[1] https://energysavingtrust.org.uk/home-insulation/roof-and-loft
[2] https://www.rockwool.co.uk/technical-resources/faqs/
[3] FIW, Durability Project Mineral Wool (2016), p. 29, Chapter 7 “Conclusions and Outlook.”
[4] https://www.rockwool.co.uk/why-stone-wool/
[5] Centre for Fire and Hazard Science, University of Lancashire, “Assessment of the fire toxicity of building insulation materials”; Communities and Local Government, Fire Statistics United Kingdom 2007
[7] https://www.rockwool.co.uk/why-stone-wool/
[8] https://www.gov.uk/government/publications/conservation-of-fuel-and-power-approved-document-l
