Hertfordshire · AL5

Intumescent & Smoke Seal Replacement in Harpenden

Intumescent & Smoke Seal Replacement in Harpenden, Hertfordshire: every door logged, photographed and graded, with a clear price for anything that needs putting right.

In short: 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.

Town: Harpenden
County / area: Hertfordshire
County council: Hertfordshire
Postcode district: AL5
Region: East of England
Population: Around 31,000 people
Fire safety law: England: Fire Safety Order 2005 + regulation 10 above 11 m
Nearest town: St Albans (8 km)

What kind of buildings in Harpenden need fire door work?

Harpenden has its share of converted buildings and older doors of unknown origin, where an inspection records what evidence exists. If you look after more than one building around Harpenden, we can schedule them on the same day.

What happens on site in Harpenden?

Threshold or drop-down seals where smoke control is required
Gap readings checked so new seals can work
Seals on hanging, closing and head edges, and meeting stiles on pairs
Survey of the seal type, size and position for each door
Old seals removed cleanly from the groove

Paint	Smoke seals free of paint so they can work.
Size	Width and position match the door's evidence and gap.
Type	Intumescent only or combined with a smoke seal, to suit the door's rating.

Full details on our intumescent & smoke seal replacement page.

How we work in Harpenden

Photos of every defect

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

One contact

One point of contact for inspections, repairs and replacements across Harpenden and Hertfordshire.

Priced door by door

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

Which fire door rules apply in Harpenden?

Harpenden is in England, so the Regulatory Reform (Fire Safety) Order 2005 applies to the common parts and non-domestic premises, and regulation 10 adds quarterly communal and annual flat entrance door checks in residential buildings with storeys over 11 metres.

What will it cost in Harpenden?

Guide prices for fire door seal replacements in Harpenden start from £145 per visit; typical rates are £45–£110 per door, ex VAT. Get a guide price for your Harpenden building.

Questions from Harpenden clients

Does regulation 10 apply to buildings in Harpenden?

Yes, if the building is a multi-occupied residential building with storeys over 11 metres. Harpenden is in England, so the quarterly communal door checks and annual flat entrance door checks apply to those buildings.

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.

Can intumescent strips be painted?

Brush and fin smoke seals should never be painted, because paint stops them working. Some intumescent strips tolerate a light coat, but the safest rule is to mask all seals before decorating and replace any that have been painted.

Do you work in occupied buildings in Harpenden?

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