Isle of Wight · England

Dunsbury Fire Rated Sealant

Our applicators work in Dunsbury on intumescent and fire-rated sealant around gaps, frames and service penetrations. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.

  • Cracked or shrunken fire-rated sealant
  • Standard silicone or caulk in a fire-stopping gap
  • Holes left by a change of layout

Need fire rated sealant in Dunsbury?

Work for landlords, hotels and businesses

Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.

Letting agents and landlords in Dunsbury can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.

About our fire rated sealant in Dunsbury

In flats, HMOs, offices and schools, fire stopping is often disturbed by later work. A new cable run or a replaced pipe can leave an open hole behind. We seal them with a product tested for that kind of gap. Typical jobs include linear gaps at the head of walls and door frames with gaps between frame and wall, across service penetrations, linear gaps and flats & HMOs.

If you have holiday lets, a converted barn used for business or a community building near Dunsbury, the washrooms, kitchens and any fire-rated joints need the same care as a big site.

We stand behind the work with a 12-month guarantee, so you are covered after we have gone.

Location
Dunsbury (PO30)
Wider area
Isle of Wight
Guarantee
A year, on every job
Price
A clear price before we start
Call
0345 464 0079
Last updated
26 October 2026
Eleven members of the Mr Mastic team standing in front of branded white vans

Looking after it afterwards

Once the sealant has cured, a few habits help it last:

  • Check risers, ceiling voids and cupboards during building checks
  • Get damaged fire seals looked at promptly
  • Allow for resealing whenever new services are run
  • Make resealing part of every contractor’s brief

Include fire stopping in your regular building checks. Look for cracks, gaps or sealant that has been cut or pulled out and have them put right.

If a fire risk assessment has flagged a gap, don’t leave it for the next one. Get it sealed and recorded so the item can be closed.

How the job changes by surface

Door frames

Frame gaps are normally hidden behind the architrave. Where it’s open, we seal it to the product’s details for that gap size before the trim goes back.

Linear gaps

Gaps along the top of partitions are easy to miss above a ceiling. We work along the whole run.

Honest limits

We’ll always be straight with you, so here’s what new sealant won’t do:

  • Problems with the door itself rather than the gap around the frame
  • A wall that is not a fire-resisting element to begin with
  • Assessing a building’s fire safety

Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.

Where we work in Dunsbury

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

Quotes for fire rated sealant in Dunsbury

We quote each job individually. This is what makes a difference:

  • Whether the work is at height
  • Mould in or behind the old joints
  • The number and length of the joints
  • The number of rooms or windows

Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we will explain what it covers.

What we need to know

To help us quote quickly, let us know:

  • Pictures of the joints, sent by email
  • Where the property is
  • Whether it’s a home or a business
  • Any previous sealing or DIY work

For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work and give you a clear quote.

Commercial buildings in Dunsbury

If you run a hotel, guest house or holiday let in a coastal place like Dunsbury, busy months put washrooms and kitchens under pressure, so it’s worth checking the sealant before the busiest weeks. 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 are given, installing the product to its tested details.

If you look after a church, hall or community building such as St. Mary's Church, service openings in its walls need the right fire-rated sealant, as in any building. In and around Dunsbury, as anywhere, good fire rated sealant starts with a clean, dry, properly prepared joint.

Dunsbury is about 7 miles south-west of Newport, in the Isle of Wight. We provide fire rated sealant to homes and businesses in Dunsbury and the surrounding area, as part of our work across the Isle of Wight. Our the Isle of Wight coverage runs to 125 places, and Dunsbury is one of them. Southampton is on our list too, about 18 miles from Dunsbury.

Jobs for fire rated sealant in PO30 works the same way as everywhere else we cover. Close by, we work in Brook (1 mile south), Hulverstone (1 mile south-east), Brookgreen (1 mile south-east), Shalcombe (1 mile north-east) and Chilton Green (2 miles south-east). Larger places within reach include Newport (7 miles north-east), Ryde (14 miles east), Cowes (9 miles north-east), Sandown (13 miles east), Shanklin (12 miles east) and Ventnor (12 miles east). Island and remote addresses take a little more planning, so please mention your location when you phone 0345 464 0079 or email us.

Local landmarks in Dunsbury

Well-known places in the area include Yarmouth Castle (3.9 miles north-west) and Calbourne Water Mill And Rural Museum (2.3 miles north-east). The countryside around Dunsbury includes Westover Down.

Map of Dunsbury © OpenStreetMap contributors

The process

When we arrive, we start by going over the job with you, so there are no surprises. Surfaces next to the work are protected before any work begins. Most jobs take anything from a few hours to several days, depending on how many gaps there are. Somewhere as small as Dunsbury, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.

  1. We go through the gaps on your list or survey and check each one’s size and substrate.
  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. Fire-rated or intumescent sealant is applied to the right depth and tooled.
  5. Finally, we list where we worked and what we used, for your records.

How to prepare

  • Clear items away from the joints we’re working on
  • Tell us about any previous sealing or DIY attempts
  • Tell us about access, such as stairs, a lift or high-level joints

Get a quote

To get a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.

Get a price

Related advice

DIY versus a professional finish

If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.

The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.

Questions from Dunsbury

What guarantee comes with fire rated sealant in Dunsbury?

All our work, in Dunsbury and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.

Do you cover Dunsbury for fire rated sealant?

Yes, Dunsbury is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job.

Which products do you use?

Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.

I’m a tenant. Can you help?

Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.

How long will you be here?

A typical job takes from a few hours to a few days, depending on the number of gaps and the access. Your quote will say how long we expect yours to take.

Does someone need to be in?

Access is agreed with you when the job is booked. For inside work, that normally means someone being in.

Are you an approved applicator?

Yes. We hold ARBOMaster approved applicator status and we are fully insured too.

Are you insured?

Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.

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