Basement insulation offers an effective solution for minimising heat loss and reducing noise in below ground spaces.
Basement walls, floors and ceilings can be insulated to improve thermal performance, reduce noise transfer from the room, and ensure fire safety.
This page covers everything from installing basement foundation insulation, to the benefits of insulating below ground.
Below ground insulation in a basement is ideal to reduce heat loss in a property, protect against damp1 and create a comfortable living space.
Basements are normally the coldest areas of any property and at risk of damp. Effective insulation helps improve these conditions – and the overall energy efficiency of the building.
With existing basements, internal wall and floor insulation will significantly reduce heat loss. Basement ceiling and soffit insulation can create thermal improvements to the room above and enhance the acoustics of the room.
Benefits of using ROCKWOOL insulation include2:
The size of the basement and the areas you choose to insulate will determine any potential savings. Adding internal wall and ceiling insulation can further increase these savings.
Check your local building regulations – the recommended U-value for wall, floor or ceiling insulation varies depending on the location and whether it’s for a new build or extension. If there is already some level of insulation it may just need topping up to meet current building regulations.
Made from stone wool, ROCKWOOL products possess many properties to facilitate below ground insulation.
Strong acoustic absorption capabilities also reduce sound transfer to the floor above, while maintaining thermal efficiency.
Various ROCKWOOL products are available for basement insulation, including frame slabs, cavity batts, soffit insulation and floor slabs. Each can be applied to different spaces – offering a solution for any property.
ROCKWOOL basement insulation harnesses the power of stone for3:
Various insulation products and relevant installation methods exist, depending on the area of a basement you plan to insulate.
Insulation slabs suitable for basements can be used to insulate the floor, walls and ceiling. The appropriate product and method will depend on the size and shape of your space and the main focus – such as thermal maintenance, sound reduction or fire protection.
Key tips
At ROCKWOOL, we create products that improve energy efficiency.
All our insulation is made from a natural volcanic rock that is continually replenished by our planet and when manufacturing our products, we’re guided by ambitious goals too.
Taking a circular economy approach, we use other industries’ waste as a substitute for virgin raw material. Our stone wool can also be recycled time and time again, without any degradation of quality.
Our building insulation saves approximately 100 times more carbon in its lifespan than is emitted during its production and we’re proud that ROCKWOOL insulation can become ‘net carbon positive’ in less than 200 days.
Further information can be found in the Environmental Product Declarations (EPDs) available for all of the stone wool insulation products manufactured in the UK. To request an EPD for basement insulation, please contact technical.solutions@rockwool.com.
Financial support may be available for insulating your basement. Visit the Energy Saving Trust website for further information on floor and wall insulation grants for basements.
