Recycled polyester insulation: made from old plastic bottles
Polyester insulation is spun from recycled plastic bottles into soft, white rolls. It’s clean to handle and doesn’t irritate skin.
Illustration: recycled polyester laid between the joists
| What it is | Polyester fibre, usually made from recycled plastic bottles |
|---|---|
| Comes as | Soft white rolls |
| Where it goes | On the loft floor, between and across the joists |
| Good for | People sensitive to itchy fibres; lofts you visit often |
| Worth knowing | Costs more than mineral wool |
What it is
Plastic bottles are cleaned, shredded and spun into polyester fibres, then made into rolls that look a little like duvet filling. The result is soft, white and easy to handle.
Why people like it
It doesn’t itch or shed dust, it won’t rot, and it gives old plastic a long second life in your loft. It keeps heat in about as well as other wools for the same depth.
How we fit it
Like any roll: between the joists, then across them, on the loft floor, with the eaves left open for airflow.
Common questions
Does it work as well as mineral wool?
For the same depth, about as well.
Is it itchy?
No. That’s one of the main reasons people choose it.
Is it more expensive?
Usually, yes. Your quote can show it next to mineral wool.
Find out what your loft needs, in plain words
Tell us about your home. We’ll explain the options and send a written quote. No obligation.