Intumescent strips and smoke seals for Derbyshire buildings
We provide intumescent strips and smoke seals across Derbyshire, covering 12 towns and 34 postcode districts, including Derby, Chesterfield and Long Eaton.
Seal replacement in Derbyshire can be combined with any other remedials on the same inspection report. We check that each door in your Derbyshire building closes and latches against its new seals before signing it off.
Derbyshire has a mix of buildings, from purpose-built blocks to converted houses and commercial premises. We tailor the programme to the building, not the other way round.
Why seals fail
Seals are the most common defect on fire door inspections. They get painted over, pulled out, damaged by cleaning or simply worn by years of use. A painted brush seal no longer seals, and a strip of the wrong size may not close the gap in a fire. Our guide to seals explains the different types.
The regulations behind fire doors in Derbyshire
The rules that apply to fire doors in Derbyshire are England's. The responsible person under the Regulatory Reform (Fire Safety) Order 2005 must keep fire doors in non-domestic premises and the common parts of flats in working order; the Fire Safety Act 2021 confirmed that this includes flat entrance doors onto common parts.
Where a Derbyshire block is above 11 metres, regulation 10 of the 2022 regulations means communal doors are checked every three months and flat entrance doors annually on a best-endeavours basis. Replacement doors must also satisfy the Building Regulations, with Approved Document B as the guidance most building control bodies work from.
What happens after you enquire
- Identify door certification and seal specification
- Remove failed seals and clean the grooves
- Fit new strips and seals to the specified positions
- Fit missing pads and lock linings
- Check the door closes and latches against the new seals
- Record the products fitted
Prices for intumescent strips and smoke seals in Derbyshire
Budget around £45–£110 per door to supply and fit strips and seals, ex VAT for intumescent strips and smoke seals. Our guide prices are the same in Derbyshire as elsewhere; what changes the cost is the doors themselves. Use our guide-price tool for a quick estimate.
Questions
Do you provide intumescent strips and smoke seals across Derbyshire?
Yes. We cover all of Derbyshire, including Derby and Chesterfield. Surveys and written quotes are free.
Can smoke seals be painted?
No. Paint stops brush and blade seals working. If seals have been painted, they should be replaced.
How long do seals last?
It depends on use and care. Seals on busy doors wear faster. Regular inspections will show when they need replacing.

