The best material to insulate a loft depends on what you envision for your loft and how hot you are looking for the space to get during the summer.

For most houses, we recommend Eco SupaSoft insulation which is made of 95% recycled plastic or one of our reflective thermal cavity wall insulation options, which reflects heat back to the source. Celotex, thermal boards and TLX thermal sheeting are two of the most popular options. In winter, the Eco SupaSoft stored in your cavity wall will work to improve heating while minimising your energy use.

Yes, you can put too much insulation in an attic that prevents it from functioning correctly. After a certain amount of insulation has been installed, you may be wasting money on installation costs as only so much heat can be reflected from the loft surface.

Too much insulation in the attic can also cause moisture build-up. Even if the materials are moisture resistant to prevent mould and mildew, they can cause other problems like wood rot and condensation in other areas of the loft, especially in areas that frequently see high humidity.

You should hire professional loft insulation installers to reduce these risks and purchase a dehumidifier for your roof. Call today for a non-obligation quote for our professional services.

Yes, you can put new insulation over old insulation, but a few caveats might make you rethink the possibility of re-using old material.

First, if the material is worn out and broken down – or squished, in the case of Rockwool and similar materials – it will not give you as much thermal insulation power as the new material. In this case, replacing all the insulation is better. It will allow you to enjoy a home with better cavity wall insulation overall.

If your insulation shows signs of water damage or is damp, you will need to remove all wet material and fix the underlying issue causing the moisture to collect. Failure to do so can lead to further cavity wall damage, leading to respiratory troubles as mould and mildew grow in the insulation.