What intumescent strips and smoke seals in Hertfordshire should include
Our intumescent strips and smoke seals service runs throughout Hertfordshire. Main towns include Watford, Hemel Hempstead and Stevenage, and we cover the smaller places in between.
Seal replacement in Hertfordshire can be combined with any other remedials on the same inspection report. We check that each door in your Hertfordshire building closes and latches against its new seals before signing it off.
Hertfordshire 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.
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.
What the rules say for Hertfordshire
England's framework applies in Hertfordshire. 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 Hertfordshire, 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.
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 Hertfordshire
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 Hertfordshire as elsewhere; what changes the cost is the doors themselves. Use our guide-price tool for a quick estimate.
Common questions
Do you provide intumescent strips and smoke seals across Hertfordshire?
Yes. We cover all of Hertfordshire, including Watford and Hemel Hempstead. 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.

