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ROCKWOOL party wall insulation can reduce heat loss in semi-detached properties and flats.
Made from natural stone wool, our products help to regulate temperatures and reduce the impact of noise from neighbouring properties.
Find out how our range can boost the energy efficiency of your project.
Separating party walls are the dividing walls between two attached properties. They are constructed from solid materials, such as bricks and concrete blocks, or built out of a framed wall construction, using wooden studs or metal frames.
There is usually a gap between party walls called an air cavity, which separates the buildings. Cold air can seep into this cavity, through edges that are exposed to the elements outside, while warm air rises and escapes the building.
This heat loss can drive up heating bills and create a less energy efficient home. Noise can also be an issue, as sound can easily travel through this hollow space. The increased amount of cold air flowing into a building can even increase the risk of occupants developing respiratory conditions - or exacerbating existing symptoms1.
Party wall insulation fills the gap in-between, ensuring heat and sound are captured and contained – improving acoustic and thermal performance.
High-quality insulation helps to:
To work out the amount of insulation you’ll need, measure the length and width of the space you’re installing in and multiply – this will give you the m² area of the wall.
It’s also helpful to know the depth of the cavity wall space. This will determine what insulation thickness you require and how many layers you’ll need.
Statistics from the Energy Saving Trust show that homes could make yearly energy bill savings of:
Use our ROCKWOOL U-Value calculator to determine the thermal performance of the building’s walls.
ROCKWOOL party wall insulation harnesses the power of stone wool. We offer medium density products, for a rigid fit in solid walls, and low density slabs easily placed in wooden or metal framed constructions. Our solutions provide all-round safety and comfort.
Key benefits:
The DUO Residences twin tower development in Ophir-Rochor, Singapore, involved construction of 660 luxury flats in one tower, while the other included a five-star hotel, office and retail units.
Architects were keen to reduce noise transfer between luxury units and penthouses. They also wanted to increase thermal performance.
ROCKWOOL insulation was chosen for separating walls, thanks to its excellent sound absorption qualities.
Fire resilience was another crucial factor. Stone wool not only allows walls to ‘breathe’ by letting air pass through, boosting air quality, but also withstands temperatures of up to 1000°C.
There are different approaches to installing our party wall insulation products, depending on whether you are working on a new build or a renovation.
During a new build, you can easily incorporate one of our various solutions to improve the thermal, sound and fire resistant properties of a separation party wall.
When renovating a party wall, to improve its performance, a good solution would be to construct a dry wall solution against the separation wall. Alternatively, you could have your wall inspected by an installer and insulated with our granulate solution.
Products are available that can be placed at the rafter line or adjacent outer wall – to avoid heat loss at the edge of the construction.
Installation guides can be found on our individual product pages.
Key tips:
At ROCKWOOL, we create products that improve energy efficiency. But we also want to ensure the materials we manufacture, and the ways in which we produce them, are sustainable too.
All our stone wool insulation is made from volcanic rock, one of the earth’s most abundant natural resources.
Our manufacturing techniques include circular economy practices, reprocessing waste from other industries, as well as our own. We take stone, the most abundant natural resource on Earth, and upcycled secondary materials that would otherwise end up as waste and turn them into long lasting stone wool insulation products. These products are themselves recyclable and can be recycled again and again without any deterioration in quality.
After just 200 days, ROCKWOOL insulation will have saved more carbon than was used in its manufacture.
Our party wall insulation can also support improved health and well-being thanks to its ability to limit noise transfer from internal and external sources.
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 party wall insulation, please contact technical.solutions@rockwool.com.
Check the Energy Savings Trust website to see whether there are any financial support schemes available for party wall insulation.
[1] WHO Housing and Health Guidelines - https://www.ncbi.nlm.nih.gov/books/NBK535294/
GMC approved in English). (Message House)
[3] https://energysavingtrust.org.uk/home-insulation/cavity-wall
[4] https://energysavingtrust.org.uk/home-insulation/cavity-wall
[5] GMC approved language (EURIMA language on durability available offline; contact fire safety SME). (Message House)
[6] https://www.rockwool.com/group/why-stone-wool/thermal-properties/
[7] https://www.rockwool.com/group/why-stone-wool/acoustic-capabilities/
[8] DTU Civil Engineering Prof. Carsten Rode, “Influence of moisture on performance of mineral wool insulation” (2018) Source link
[9] ROCKWOOL Group, Sustainability Report 2018, p. 20.
[10] ROCKWOOL Group, Sustainability Report 2017, p. 22.
[11] https://www.rockwool.com/group/why-stone-wool/
[12] Chatbot conversations – Cell F68
[13] Chatbot conversations – Cell F54
