Isle of Wight · England
Fire-rated sealant in Colwell, Isle of Wight
Professional fire rated sealant in and around Colwell, with every bit of old sealant taken out first and a 12-month guarantee.
- Cracked or shrunken fire-rated sealant
- Ordinary sealant used where a fire-rated product was needed
- Gaps flagged on a fire risk assessment
What sealant work can’t fix
It helps to know what we can’t do too:
- Issuing a fire rating or certificate for a building
- Walls or floors that weren’t built to resist fire
- Assessing a building’s fire safety
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
What we seal
- Pipe & cable gaps
- Door frames
- Flats & HMOs
- Plasterboard & masonry
- Service penetrations
- Linear gaps
About our fire rated sealant in Colwell
Intumescent sealant looks much like any other sealant until it gets hot; then it swells to help close the gap. The right product depends on the gap size, the substrate and what passes through, so we work to the manufacturer’s details. If you have seals cut through by electricians, plumbers or data installers and holes left by a change of layout, we can help, on pipe & cable gaps, door frames and service penetrations alike.
If you have holiday lets, a converted barn used for business or a community building near Colwell, washroom and kitchen sealant and any fire-rated joints need the same attention as anywhere.
All of our work is guaranteed for twelve months, in Colwell and everywhere else we cover.

- Location
- Colwell (PO40, PO39)
- Wider area
- Isle of Wight
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Keep the record of products and locations with your fire safety documents
- Flag any open gap you spot round a pipe or cable
- Do not paint over fire sealant until it has cured
- Photograph sealed gaps before they’re covered up
Leave the sealant to cure fully before painting near it. Some fire-rated sealants can be painted and some cannot, so ask us which we used.
Open gaps don’t only matter in a fire: noise, draughts and even pests can come through too. Sealing them early helps on every front.
Also near Colwell
What else we do in Colwell
Commercial buildings in Colwell
If you run a hotel, guest house or holiday let in a coastal place like Colwell, heavy use in the busy months is hard on washroom and kitchen sealant, and any building work there should leave fire-rated joints made good. 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 apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details.
Rented homes near Lymington Pier station change hands often, and fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. Managing a site like All Saints Church of England Primary School? Then fire-stopping around service openings should be restored whenever new services go in.
Colwell is about 5 miles south of Lymington, in the Isle of Wight. Jobs in Colwell get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Colwell is one of 125 towns and villages in the Isle of Wight we cover for fire rated sealant. For nearby work, see our Southampton page.
All of PO40 and PO39 is within our area for fire rated sealant, from the main roads to the quietest streets. Local streets include Colwell Chine Road, Heath Lane and Chine Close, all of which we cover. If you’re just outside Colwell, we cover Totland (1 mile south-west), Freshwater (1 mile south-east), Norton Green (1 mile north-east), Easton (1 mile south-east) and Afton (1 mile south-east). Larger places within reach include Newport (10 miles east), Cowes (11 miles north-east), East Cowes (12 miles north-east), Barton (11 miles east), Hunny Hill (10 miles east) and Cross Lane (11 miles east). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
Around Colwell
Around Colwell, our work takes us to homes and buildings near Colwell Bay Inn. Colwell’s nearest station is Lymington Pier station, about 4.9 miles north. Well-known places in the area include Lymington New Forest Hospital (5.7 miles north) and Ferguson Family Museum (1.1 miles east). The countryside around Colwell includes Tennyson Down and Lymington and Keyhaven Marshes Nature Reserve.
How the job changes by surface
Door frames
Frame gaps are usually hidden behind the architrave. We seal any open gap to the product’s tested details.
Service penetrations
A copper pipe, a cable and a plastic pipe can all need different fire-stopping details. We follow the manufacturer’s tested detail for each, and tell you if sealant alone isn’t the right fix.
Do you need fire rated sealant in Colwell?
Gaps also open up as buildings move: a seal that cracks or pulls away leaves a path for smoke. Knocks, maintenance and building work damage it further.
It’s worth asking for a quote if you see:
- Gaps where walls meet ceilings or slabs
- Old fire sealant that has split or come away
- Sealant items on a fire risk assessment action list
- Fire stopping disturbed by later work
If you look after a church, hall or community building such as Christ Church, older buildings that have had new heating or wiring often have service gaps worth checking.
Comparing quotes
- Whether all the old sealant comes out first
- How the joint is cleaned and prepared
- How long to leave it before use
- What insurance they hold
The process
When we arrive, we look over the joints with you first. We protect the surfaces around the joints before any work begins. Most jobs take from a few hours to a few days, depending on the number of gaps and the access. Somewhere as small as Colwell, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We plan the order of work and access, floor by floor or flat by flat.
- We take out any damaged or unsuitable sealant.
- Dust and loose debris are cleaned from each gap.
- We apply and tool the sealant to the product’s tested detail.
- We record what was done and flag anything that needs a different system.
Before we arrive
- Mention any sign-in or site rules at work premises
- Mention any tricky access
- Keep pets and children clear of the area while we work
Get a quote
We quote each job on its own, so start by telling us what you need. Simply phone 0345 464 0079 or send us an email and describe the job, and pictures are welcome.
Advice
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Questions from Colwell
Do you work for landlords with property near Lymington Pier station?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll send you a clear quote.
Is Colwell within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Will you assess my building’s fire safety?
No, we don’t assess buildings. When your assessor or designer has set out what’s needed, we will quote for the sealant work on it.
Do you offer different sealant colours?
In most cases you can choose. We will explain which colours are available and agree one before work begins.
How do I get a quote for fire rated sealant in Colwell?
Size, access and the old material all affect the cost. Call for a quick quote and we will talk you through it.
Are you insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
Is it worth trying it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
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.
