Windsor and Maidenhead · England

Maidenhead Fire Rated Sealant

Intumescent and fire-rated sealant around gaps, frames and service penetrations for Maidenhead, backed by a 12-month guarantee. Ask us for a quote.

  • Gaps left after a refit or conversion
  • Gaps flagged on a fire risk assessment
  • Unsealed gaps around fire door frames

Fire rated sealant in Maidenhead

How we handle fire rated sealant in Maidenhead

Intumescent sealant looks much like any other sealant until it gets hot; in a fire it expands into the joint. Which product suits a gap depends on its width, the materials either side and what runs through it. Typical jobs include damaged fire sealant left by other trades and linear gaps at the head of walls, on linear gaps, service penetrations and door frames.

In a town like Maidenhead, commercial work can mean offices, shops, schools, surgeries or small business units. All of them have washroom and kitchen joints, and many have fire-rated joints around pipes and cables.

The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Location
Maidenhead (SL6)
Wider area
Windsor and Maidenhead
Guarantee
12 months on all our work
Price
Quoted before any work starts
Phone
0345 464 0079
Updated
26 October 2026

Do you need fire rated sealant in Maidenhead?

If the sealant is too shallow, has the wrong backing or sits on a dusty surface, it is not installed as tested. Rushed fire stopping is common particularly when it was the last job before handover.

Common reasons people contact us are:

  • Gaps around pipes and cables through fire-resisting walls
  • New service routes left unsealed after building work
  • Unsealed gaps around fire door frames
  • Ordinary sealant used where a fire-rated product was needed

For buildings such as All Saints' Church, older buildings that have had new heating or wiring often have service gaps worth checking.

Before booking anyone

  • What happens if they find a problem under the old sealant
  • How long to leave it before use
  • How the colour is chosen
  • Are they insured?

10 questions to ask before you book

Fire rated sealant in Maidenhead: local notes

There are hotels and other places to stay in and around Maidenhead. Hotel work can be planned room by room, with out-of-hours working where needed. Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, which is often where open fire-stopping gaps are first noticed. We work to the specification you’re given, installing the product to its tested details.

For site and facilities teams at buildings such as Claires Court Schools, service openings in fire-resisting walls need checking after any refurbishment. For landlords with property near Maidenhead station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.

Maidenhead is about 27 miles west of London, in Windsor and Maidenhead. Maidenhead gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 57 towns and villages across Windsor and Maidenhead. We also work in Reading, about 12 miles from Maidenhead.

Here we cover the SL6 postcode area for fire rated sealant. Streets in the area include High Street Mall, High Street and Laggan Square. Maidenhead is on the A4 and A308, so it’s easy for us to get to with everything needed for fire rated sealant. We also cover Boyn Hill (1 mile south-west), Furze Platt (1 mile north), Cox Green (1 mile south-west), Pinkneys Green (1 mile north-west) and Bray Wick (2 miles south-east). Further out, we also cover Windsor (5 miles south-east), North Ascot (7 miles south), Dedworth (5 miles south-east), Broomhall (10 miles south-east), South Ascot (9 miles south) and Old Windsor (8 miles south-east). Maidenhead is one of the larger places we cover in Windsor and Maidenhead.

Around Maidenhead

Locally, jobs take us to homes and businesses close to Boyne Hill CofE Infant and Nursery School, Desborough College and The Windsor Castle pub, among other places. For rail, the closest station is Maidenhead station, roughly 0.5 miles south-east of the centre. Other landmarks nearby include The Reitlinger Bequest Museum (1.2 miles east) and St Mark's Hospital (0.6 miles west). The countryside around Maidenhead includes Weycock Hill and Taplow Lake.

Map of Maidenhead © OpenStreetMap contributors

Landlords, agents and businesses in Maidenhead

Letting agents often deal with us directly. Tell us the address, the job and how access works and we will give you a quote.

Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.

Your questions about fire rated sealant in Maidenhead

Can you help a landlord with a rental near Maidenhead station?

Yes, rental work is part of what we do. You can call 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before we start.

Can you do fire rated sealant in Maidenhead?

Yes. We work across London and the South East, and Maidenhead is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear quote.

Do you offer different sealant colours?

We’ll suggest a colour to suit the surroundings. The product needed can limit the range.

How much does fire rated sealant cost in Maidenhead?

There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.

Is it OK to seal over old sealant?

No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.

Do you hold any approvals?

Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.

How long does fire rated sealant take?

Typically it takes a few hours for a handful of gaps, and longer for a whole building. Larger jobs naturally take longer, and we will say how long yours will take.

Are you insured?

Yes, we’re fully insured.

Different surfaces, different methods

Plasterboard walls

We check that the board around the gap is sound. Crumbling edges are cleaned back before the sealant goes in.

Flats and HMOs

In flats and HMOs, the walls and floors between homes and common areas need sealing where services pass through. We seal the gaps your assessor has identified room by room.

DIY versus a professional finish

If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.

A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.

What we can’t put right

Honest advice matters more to us than a booking, so here’s what new sealant will not do:

  • Problems with the door itself rather than the gap around the frame
  • Deciding what fire stopping a building needs
  • A wall that is not a fire-resisting element to begin with

Not sure which it is? You can call 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.

Surfaces we seal

  • Flats & HMOs
  • Linear gaps
  • Service penetrations
  • Door frames
  • Pipe & cable gaps
  • Plasterboard & masonry

Aftercare tips

After the cure time, these simple habits help:

  • Make resealing part of every contractor’s brief
  • Ask which product was used before you paint
  • File the fire-stopping record where your assessor can find it
  • Report cracked or damaged seals as soon as you notice them

File the record of locations and products with your fire safety paperwork. It saves time at the next inspection or assessment.

A flagged gap shouldn’t wait for the next assessment. Have it sealed, then keep the record.

The process

There’s no need to move everything out, just the space around the work. We protect the rest, and the job takes a few hours for a handful of gaps, and longer for a whole building for a typical job. A visit in Maidenhead needs access to the work and a place to park close by. For outside work, let us know about side access, gates and any upper-floor joints.

  1. Before starting, we go through the specification or action list with you.
  2. Each gap is measured and its substrate and service noted.
  3. Unsuitable material such as ordinary foam or silicone is cut out and the gap cleaned.
  4. The specified fire-rated sealant goes in over any backing its detail requires.
  5. We hand over a list of locations and products for your files.

Getting ready for the visit

  • Keep children and pets away from the work area
  • Mention any leaks or damp you’ve noticed
  • Tell us if parking is tricky

Get a quote

We quote each job on its own. Simply phone 0345 464 0079 or send us an email and describe the job.

Ask for a quote

Advice

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job