Greater London · UB5

Intumescent & Smoke Seal Replacement in Northolt

From the UB5 district outwards, we cover Northolt and neighbouring towns such as Greenford and Harrow for fire door seal replacements.

Intumescent seals are strips set into the edge of a fire door or its frame that expand when heated to close the gap around the door. Smoke seals, usually brush or fin seals, block cold smoke before the intumescent reacts. Both are part of the door's tested performance. We use the same method for buildings in Northolt.

Town: Northolt
County / area: Greater London
Postcode district: UB5
Region: London
Population: Around 26,000 people
Fire safety law: England: Fire Safety Order 2005 + regulation 10 above 11 m
Nearest town: Greenford (2 km)

Typical buildings in Northolt

Fire door work in Northolt typically involves purpose-built blocks, mansion flats and converted terraces, where communal stair doors and flat entrance doors carry most of the fire strategy. Northolt jobs start with a short call to agree access, followed by a fixed price in writing.

What you get in Northolt

Intumescent-only or combined intumescent and smoke seals as required
Threshold or drop-down seals where smoke control is required
Old seals removed cleanly from the groove
Gap readings checked so new seals can work
Survey of the seal type, size and position for each door

Type	Intumescent only or combined with a smoke seal, to suit the door's rating.
Continuity	No breaks, overlaps or missing lengths.
Size	Width and position match the door's evidence and gap.

Full details on our intumescent & smoke seal replacement page.

Why book with us in Northolt?

Photos of every defect

You get photographs of every defect found in Northolt, linked to a door reference you can find again.

Records you can use

PDF and spreadsheet records for every Northolt building, ready for your fire risk assessor.

Same report everywhere

Whether your building is in Northolt or across the country, the report format, defect grading and pricing are the same.

Fire door law for Northolt buildings

As Northolt is in England, responsible persons must maintain fire doors under the Fire Safety Order 2005, give residents fire door information in buildings with two or more flats, and run regulation 10 checks where a storey is over 11 metres.

How much do fire door seal replacements cost in Northolt?

In Northolt, fire door seal replacements typically cost £45–£110 per door ex VAT, with visits from £145. Get a guide price for your Northolt building.

Questions from Northolt clients

Will new seals fix a door with big gaps?

No. Seals only work within the gap they were tested with. Gaps outside tolerance need the door adjusting first.

What is the difference between an intumescent strip and a smoke seal?

An intumescent strip expands in heat to seal the gap during a fire. A smoke seal, often a brush or blade, blocks cold smoke at lower temperatures. Smoke control doors, marked with an S such as FD30S, need both.

Which fire safety law applies in Northolt?

Northolt is in England, so the Regulatory Reform (Fire Safety) Order 2005 applies, together with the Fire Safety (England) Regulations 2022 for multi-occupied residential buildings.

How quickly can you inspect fire doors in Northolt?

It depends on the number of doors and access. Tell us what you need and we will give you the earliest date when you call, and confirm it in writing.