Old mineral wool is usually a performance problem rather than a health hazard. There are, however, situations where old loft material should be treated carefully and not disturbed by a homeowner.
On this page
- When caution is warranted
- When it is simply worn out
- Removal done properly
When caution is warranted
- Loose granular vermiculite, which can historically contain asbestos traces and should be tested before disturbance
- Insulation contaminated by bird or rodent droppings and nesting material
- Material that is persistently damp, matted or visibly mouldy
- Very old fibrous material that is heavily degraded and dusty
When it is simply worn out
Dry, intact mineral wool that is just too shallow is not dangerous. It can often be topped up rather than removed, which is cheaper and less disruptive. We will tell you when that is the sensible option.
Removal done properly
Removal should involve appropriate PPE, bagging at source, careful handling around ceiling boards and cables, and disposal at a licensed facility. Standard removal is £10/m² and vermiculite or granulated material £15/m². If asbestos is suspected, testing comes first and specialist licensed contractors handle it — we will not disturb it.
Common questions
Should old loft insulation be removed?
Not always. Dry, intact mineral wool can usually be topped up. Removal is appropriate when material is damp, contaminated, compacted or granular vermiculite.
Is vermiculite loft insulation dangerous?
Some vermiculite has historically contained asbestos traces. It should be tested before being disturbed, and handled by a licensed contractor if asbestos is confirmed.
If you would like an honest opinion on your own loft, send us your postcode and a few photographs. Most lofts can be assessed and quoted remotely using satellite imagery, and we will tell you if work is not necessary.
Related: Insulation removal • Should you remove old insulation? • Price list • Project planner • Contact