Getting intumescent strips and smoke seals right in Portsmouth
We provide intumescent strips and smoke seals in Portsmouth (PO1 and the surrounding postcodes), from the first survey through to a documented handover.
In and around Portsmouth, fire door work covers everything from shared houses to purpose-built blocks of flats. We plan each job around the people who use the building.
Painted and missing seals are among the most common fire door defects nationally; in Portsmouth we replace them with the type and size the certification specifies. We check that each door in your Portsmouth building closes and latches against its new seals before signing it off.
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.
Each installation includes:
- Removal of damaged or painted seals
- Brush or blade smoke seals
- Intumescent pads to hinges and locks
- Intumescent strips in frame or leaf edge
Fire door law for Portsmouth properties
England's framework applies in Portsmouth. Approved Document B guides the fire performance of new and replacement doors under the Building Regulations 2010. Day-to-day duties sit with the responsible person under the Fire Safety Order 2005, and for multi-occupied residential buildings, the Fire Safety (England) Regulations 2022 add duties such as giving residents information about fire doors.
For blocks over 11 metres in Portsmouth, those regulations require communal fire door checks at least every three months and best-endeavours flat entrance door checks each year. In higher-risk buildings, building work is overseen by the Building Safety Regulator, so we check whether approval is needed before starting.
Who needs intumescent strips and smoke seals in Portsmouth?
From care homes to schools, the requirement for intumescent strips and smoke seals in Portsmouth comes from the fire strategy or risk assessment for the building. We work from that document, or help you interpret your inspection report, before quoting.
The steps on a Portsmouth installation
- 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
Guide prices in Portsmouth
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 Portsmouth as elsewhere; what changes the cost is the doors themselves. Use our guide-price tool for a quick estimate.
Covering Portsmouth and nearby
Nearby towns we cover include Gosport, Fareham and Ryde. Distance from Portsmouth does not change our guide prices, and the survey and quote are free.
Questions from Portsmouth
Do you cover PO1 and nearby postcodes?
Yes. We cover Portsmouth including PO1, and nearby towns such as Gosport and Fareham. The survey and written quote are free.
How quickly can you survey in Portsmouth?
It depends on the number of doors and access, but we offer survey dates as soon as we reply to your enquiry. If an inspection has found urgent safety issues, tell us and we'll prioritise.
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.