Underground spaces with a soil-facing wall require basement wall insulation to protect the room from heat loss and moisture build-up.

ROCKWOOL solutions can be applied to these kinds of walls in domestic housing – and are ideal for underground flats, cellars and conversions below street level.

Discover our range of stone wool batts – as well as our system solutions. Our products and solutions are adaptable, robust and can help transform an unwelcoming basement into a comfortable living space.

Why do we need basement wall insulation?

More and more homeowners are choosing to renovate their basements and cellars. Indeed, statistics suggest this can add nearly seven percent to the overall value of a property1.

However, these areas need insulation to improve temperature regulation and tackle damp and mould.

Benefits of using ROCKWOOL basement wall insulation for internal applications:

  • Non-combustible  - Does not burn and does not give off any significant toxic smoke
  • Temperature regulation – acting as a buffer against heat loss
  • Breathability – helping air flow through, without losing excess heat

Calculator and savings

To determine how much insulation you’ll need, you must first measure the wall you’re insulating.

If you’re installing in-between wall studs, you need to choose a product that has a specific width. This will allow it to fit snugly, with no gaps. Factor this into your calculations.

Once it has been installed, occupants can enjoy greater energy savings, as less heat is escaping through wall spaces.

The basement should also be properly ventilated. That way you prevent it being a damp, musty space and you can use it as a living area, adding additional value to a home – as well as the potential to rent it out to tenants as an extra income source.

REDDry System installation step by step 03
Insulating basement walls brings direct energy savings. With proper ventilation, ROCKWOOL solutions can even create additional living space – such as a game room for kids.

Roger Peeters

ROCKWOOL Group Product Manager
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Why stone wool?

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ROCKWOOL Material Safety Datasheet

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Financial support

Check the Energy Savings Trust website to see whether there are any additional financial support schemes available for basement wall insulation.

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Should you insulate basement walls on the inside?