Windsor and Maidenhead · England

Dedworth Fire Rated Sealant

Our applicators work in Dedworth on intumescent and fire-rated sealant around gaps, frames and service penetrations. Old sealant removed completely, joints prepared properly.

  • Cracked or shrunken fire-rated sealant
  • Open joints along the top of partitions
  • Damaged fire sealant left by other trades

Need fire rated sealant in Dedworth?

Fire rated sealant for homes and businesses in Dedworth

Fire stopping only performs as intended if it’s done to the detail: correct depth, correct backing and a product suited to the surfaces. That’s the part we focus on, gap by gap. We work on service penetrations, pipe & cable gaps and door frames, and people most often call us about seals cut through by electricians, plumbers or data installers and sealant items on a fire risk assessment action list.

If you run a pub, café, guest house or shop in or near Dedworth, the washrooms and kitchen need the same attention as a big site.

The work is covered for a year after we finish. If there’s a problem with it, please ring 0345 464 0079 or send us an email.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Where
Dedworth (SL4)
Region
Windsor and Maidenhead
Cover
One year on every job
Quotes
A clear price before any work starts
Telephone
0345 464 0079
Page updated
26 October 2026

What we can’t put right

We won’t take on work that will not last, so here’s what sealant cannot put right:

  • Openings too large for sealant, which need batts, boards or another system
  • Fire doors that need new seals, closers or hardware
  • Walls or floors that weren’t built to resist fire

If you’re not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.

Surfaces we seal

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

Do you need fire rated sealant in Dedworth?

Door frames are a common weak spot. The architrave hides the gap between frame and wall, so it can be left open when a door is replaced.

Keep an eye out for any of the following:

  • Seals cut through by electricians, plumbers or data installers
  • Open holes round services passing through fire walls
  • Joints picked up in a fire-stopping survey
  • Gaps where walls meet ceilings or slabs

For buildings such as All Saints Church, service openings in its walls need the right fire-rated sealant, as in any building.

Questions to ask before booking

  • How much experience the applicator has
  • What preparation is included
  • What insurance they hold
  • Is VAT in the price?

Our hiring checklist

Can I do it myself?

A DIY attempt does not rule out a professional job. We cut it out and start again.

Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.

What we do, step by step

We bring everything the job needs with us. After a quick look at the joints together, the area is protected and the work begins. It normally takes anything from a few hours to several days, depending on how many gaps there are. For a job in Dedworth, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.

  1. First we work through your list or survey, measuring each gap and checking what it’s formed in.
  2. Old or unsuitable sealant is cut out and the gap cleaned.
  3. Where the tested detail needs backing or fill, we fit it.
  4. The sealant goes in to the depth its detail sets, then it’s tooled off.
  5. Locations and products are noted so you have them on file.

Before we arrive

  • Keep children and pets away from the work area
  • Clear items away from the joints we are working on
  • Where the joints are inside, avoid wetting them before we arrive

Ask for a quote

If you’re in Dedworth and need fire rated sealant, ring 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.

Ask for a quote

Read more

How the job changes by surface

Linear gaps

Head-of-wall gaps are often hidden above suspended ceilings. We seal them along their full length so there are no open sections left.

Flats and HMOs

In occupied buildings, we plan the order of work with you. We agree access to each flat and the common parts before we start to keep disruption down.

Keeping the joints in good condition

No joint lasts for ever, but care makes a real difference. Our tips:

  • Ask every contractor to reseal any fire stopping they disturb
  • Take photos of fire stopping before ceilings or boxing go back
  • Report cracked or damaged seals as soon as you notice them
  • Plan fire stopping into any work that goes through walls or floors

Follow the cure time we give you before decorating over the sealant. Some fire-rated sealants can be painted and some can’t, so ask us which we used.

If a fire risk assessment has flagged a gap, do not leave it for the next one. Get it sealed and recorded.

Dedworth: your questions answered

Do you work in hotels near Dedworth?

Yes. Hotel and guest-house work is part of what we do. Work can be planned room by room, and out-of-hours working can be arranged.

Can you help a landlord with a rental near Windsor & Eton Central station?

Yes. We work for landlords and agents as well as homeowners. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.

What does fire rated sealant cost?

The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.

Is there a guarantee?

Yes. Each job is guaranteed for twelve months, wherever you are.

Are you ARBOMaster approved?

Yes. Mr Mastic is an ARBOMaster approved applicator.

Do you carry out fire risk assessments?

No. Your fire risk assessor, designer or building control decides that. We apply fire-rated sealant to the requirements they set.

Can new sealant go over the old?

No, and we never do. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.

Do you seal gaps around fire door frames?

Yes, if the gap is within the product’s tested range. We seal the frame-to-wall gap, not the door itself, and we’ll mention anything we notice about the door.

Commercial buildings in Dedworth

There are hotels and other places to stay in and around Dedworth. For hotels, a room-by-room programme keeps most rooms in use while the work goes on. In England, the Regulatory Reform (Fire Safety) Order 2005 requires a fire risk assessment for workplaces and for the common parts of blocks of flats, and gaps around services are often picked up there. We work to the specification you are given, installing the product to its tested details.

For landlords with property near Windsor & Eton Central station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. Schools such as Dedworth Green First School are buildings too, and service openings in fire-resisting walls need checking after any refurbishment.

Dedworth is about 1 mile west of Windsor, in Windsor and Maidenhead. We carry out fire rated sealant for homes and businesses in Dedworth, as part of our work across Windsor and Maidenhead. Across Windsor and Maidenhead, we cover 57 places, and Dedworth is one of them. For nearby work, see our Reading page (14 miles or so).

Every address in SL4 is covered for fire rated sealant, from the main roads to the quietest streets. That includes homes and businesses on Ash Lane, Wolf Lane and Roses Lane and the roads around them. If you’re just outside Dedworth, we cover Windsor (1 mile east), Oakley Green (1 mile west), Boveney (1 mile north), Clewer (1 mile north-east) and Water Oakley (1 mile north-west). We also work in nearby towns such as Maidenhead (5 miles north-west), Boyn Hill (5 miles north-west), North Ascot (5 miles south-west), Cookham (7 miles north-west), Furze Platt (6 miles north-west) and Broomhall (6 miles south). Dedworth is among the bigger towns we cover in Windsor and Maidenhead.

Landmarks near Dedworth

In Dedworth, that means homes and buildings near Windsor Girls' School, Windsor Girls' School and The Greene Oak pub, among other places. Dedworth’s nearest station is Windsor & Eton Central station, roughly 1.7 miles east. A little further out are Windsor Castle (1.9 miles east) and King Edward VII Hospital (1.5 miles east). For a walk, there’s Bray Pit and Taplow Lake.

Map of Dedworth © OpenStreetMap contributors

Why it’s worth doing now in Dedworth

Leaving a gap until a refurbishment comes round can mean years with it open. On its own, sealing it now is a small job. In an older home around Dedworth, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.

Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we’ll go through it with you.

What you get with us

  • Trusted Arbo and Everbuild sealants
  • We leave the area clean and tidy
  • ARBOMaster approved applicator
  • Rated 4.9 stars on Google

See what affects the cost or what customers say.

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