Intumescent strips and smoke seals in Isleworth: what's involved
Our intumescent strips and smoke seals service in Isleworth is simple: a survey, a fixed quote, certified products and an installation finished to the manufacturer's evidence.
Fire doors in Isleworth protect escape routes in restaurants, purpose-built blocks of flats and hotels alike. We adapt the programme to the building and its occupants, never the standard of the installation.
Painted and missing seals are among the most common fire door defects nationally; in Isleworth we replace them with the type and size the certification specifies. We check that each door in your Isleworth building closes and latches against its new seals before signing it off.
Getting the specification right
The door's certification states the type, size and position of strips and seals: in the frame or the leaf edge, single or double, and whether a combined intumescent and smoke seal is used. Replacements must match. Swapping in a generic strip from a hardware shop can undermine the door's performance.
Each installation includes:
- Check of gaps and closing after fitting
- Removal of damaged or painted seals
- Intumescent strips in frame or leaf edge
- Intumescent pads to hinges and locks
Fire door law for Isleworth properties
England's framework applies in Isleworth. 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. Enforcement of fire safety law in Isleworth sits with the London Fire Brigade.
For blocks over 11 metres in Isleworth, 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.
Where intumescent strips and smoke seals fit in Isleworth
Landlords, managing agents, facilities teams and homeowners in Isleworth can all commission intumescent strips and smoke seals from us. The usual settings are schools and HMOs, though single doors for offices are just as welcome.
How a Isleworth job runs
- 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 Isleworth
If you need a budget figure first, the guide for intumescent strips and smoke seals is £45–£110 per door to supply and fit strips and seals, ex VAT. We firm that up after a survey, pricing each door separately so you can see where the money goes.
Isleworth and neighbouring towns
Nearby towns we cover include Hounslow, Heston and Richmond. Distance from Isleworth does not change our guide prices, and the survey and quote are free.
Questions from Isleworth
Do you work in Isleworth?
Yes, we take on intumescent strips and smoke seals in Isleworth and the surrounding area, including Hounslow and Heston. Send your postcode and a few details and we'll come back with survey dates.
What happens on a survey in Isleworth?
We look at every door in scope: the leaf, frame, gaps, seals, hinges, closer, glazing and how the frame is fixed. You then get a written quote that prices each door separately.
Do all fire doors need smoke seals?
Only where the door is specified for smoke control, such as FD30S doors. Many doors on escape routes and flat entrances are specified this way.
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.

