Greater London · TW7

Fire Door Gap Adjustment in Isleworth

Isleworth landlords, managing agents and facilities teams can book fire door gap adjustments with straightforward reports and fixed prices.

Fire door gap adjustment is the work needed to bring the gaps between a fire door leaf and its frame, and under the door, back within the tolerance in the door's evidence, typically 2 to 4 mm around the edges.

Town: Isleworth
County / area: Greater London
Postcode district: TW7
Region: London
Population: Around 25,000 people
Fire safety law: England: Fire Safety Order 2005 + regulation 10 above 11 m
Nearest town: Hounslow (2 km)

What kind of buildings in Isleworth need fire door work?

Many Isleworth buildings are mixed use, with flats above shops and offices, where the stair door protecting the flats is often the weakest point. Isleworth jobs start with a short call to agree access, followed by a fixed price in writing.

What you get in Isleworth

Frame adjustment or re-fixing where the frame has moved
Gap readings at head, hinge side, closing side and threshold
Hardwood lippings fitted to narrow leaves where the evidence allows
Threshold gaps corrected or drop seals fitted on smoke control doors
Final readings recorded for the door's file

Edges	Usually 2–4 mm at head and edges unless the evidence says otherwise.
Cause	Dropped hinges, warping or frame movement fixed, not masked.
Threshold	Under-door gap suited to the door; tighter on smoke control doors.

Full details on our fire door gap adjustment page.

What to expect in Isleworth

Same report everywhere

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

Priced door by door

Every failed item in Isleworth is priced separately, so you approve exactly what you want done.

One contact

One point of contact for inspections, repairs and replacements across Isleworth and Greater London.

Fire safety law that applies in Isleworth

As Isleworth 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.

Prices in Isleworth

Typical Isleworth prices: £90–£260 per door (ex VAT). Minimum visit from £145. Get a guide price for your Isleworth building.

Questions from Isleworth clients

Do you work in occupied buildings in Isleworth?

Yes. Inspections and repairs in Isleworth can be carried out in occupied flats, schools, care homes and workplaces, with doors kept closable at all times.

What gap is allowed around a fire door?

Most guidance and manufacturers' evidence expect gaps of about 2 to 4 mm at the head and edges, with 3 mm as a practical target. The door's own certification or test evidence takes precedence if it states a different figure.

Which fire safety law applies in Isleworth?

Isleworth 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.

Can you fix a big gap with a thicker intumescent strip?

Not as a general rule. Seals are tested for a particular gap; using oversized seals to hide a poor fit is not a reliable repair.