How much loft insulation does my home need?
For mineral wool, around 270 mm is commonly recommended. Here’s how to tell if your home has enough.
| Recommended depth (mineral wool) | 270mm in total |
|---|---|
| Made up of | A layer between the joists plus a layer across them |
| Other materials | Depth depends on their thermal conductivity |
The depth
Around 270 mm of mineral wool is commonly recommended. Other materials can need a slightly different depth.
A quick check
If you can see the tops of the joists, it’s too thin.
Common questions
Can you give me a quote?
Yes. Tell us about your home on the form and we’ll send a free, written quote.
Make your home warmer from the top down
Tell us what kind of home you have and we’ll send a free, written quote for your loft. No obligation.