Windsor and Maidenhead · England
Fire-rated sealant in Clewer, Windsor and Maidenhead
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homes and businesses in Clewer and across Windsor and Maidenhead. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Holes left by a change of layout
- Gaps where walls meet ceilings or slabs
- Open gaps behind door architraves
Why act early in Clewer
An unsealed gap lets smoke and fire get round a wall that was built to hold them back. A proper seal lets the wall do its job again, and the work involved is often modest. In an older home around Clewer, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why choose Mr Mastic in Clewer
- We’re fully insured
- Quality sealants from Arbo and Everbuild
- 20+ years of sealant experience
- 12-month guarantee on every job
Fire rated sealant in Clewer
Filling a fire-stopping gap with standard silicone or caulk doesn’t make it fire-rated. We cut out the wrong material and reseal with a fire-rated product tested for that kind of gap. We’re often asked to deal with sealant items on a fire risk assessment action list and gaps where walls meet ceilings or slabs, on pipe & cable gaps, service penetrations and linear gaps.
For a pub, café, guest house or shop in or near Clewer, the washrooms and kitchen need the same attention as a big site, and fire-rated sealant around service openings should be restored after new pipes or cables go through.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Where
- Clewer (SL4)
- Wider area
- Windsor and Maidenhead
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Fire rated sealant around Clewer
Clewer has hotels and guest accommodation in and around it. 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, 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.
If you look after a church, hall or community building such as Church of St Andrew, older buildings that have had new heating or wiring often have service gaps worth checking. Rented homes near Windsor & Eton Central station change hands often, and fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through.
Clewer is about 1 mile north of Windsor, in Windsor and Maidenhead. From the centre of Clewer to the outskirts, fire rated sealant is available for homes and businesses alike, from flats and houses to offices and hotels. Across Windsor and Maidenhead, we cover 57 places, and Clewer is one of them. Reading is on our list too, around 15 miles away.
We cover every part of the SL4 postcode area for fire rated sealant. We cover properties on Oak Lane, Vale Road and Mill Lane and the roads around them. With the A308 and A332 close by, Clewer is simple for us to get to for fire rated sealant. If you’re just outside Clewer, we cover Windsor (1 mile south), Eton (1 mile north-east), Eton Wick (1 mile north-west), Boveney (1 mile west) and Dedworth (1 mile south-west). We also work in nearby towns such as Maidenhead (5 miles north-west), Boyn Hill (5 miles west), North Ascot (5 miles south-west), Cookham (7 miles north-west), Furze Platt (6 miles north-west) and Broomhall (6 miles south).
What’s near Clewer
Typical jobs here are in homes near The Windsor Boys' School, The Windsor Boys' School and The Vansittart Arms and the streets around them. The closest station to Clewer is Windsor & Eton Central station, about 0.7 miles east of the centre. Well-known places in the area include Museum of Antiquities (0.7 miles north-east) and King Edward VII Hospital (1 mile south-east). Open spaces near Clewer include Taplow Lake and Bray Pit.
Do you need fire rated sealant in Clewer?
Much fire stopping is hidden: above ceilings, inside risers and behind panels. Out of view, damage sits unnoticed until someone inspects.
It’s worth asking for a quote if you see:
- Fire stopping disturbed by later work
- Cracked or shrunken fire-rated sealant
- Standard silicone or caulk in a fire-stopping gap
- Gaps around pipes and cables through fire-resisting walls
If you look after a building such as St Edward's Catholic First School, gaps opened by contractors for new cabling are a common finding in schools and offices.
Before you book anyone
- What guarantee comes with the work
- When the joint can take water or movement
- What happens if the job turns out different
- Which colour the sealant will be
Questions from Clewer
Can you help a landlord with a rental near Windsor & Eton Central station?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
Do you take on hotel work around Clewer?
Yes, hotels and guest houses are among the places we work. Rooms can be done a few at a time, so the building stays open.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little.
What does fire rated sealant cost?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Can I do it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Is standard sealant good enough for a fire gap?
No. It might close the gap, but it is not a fire-rated seal. Use a product tested for that gap and service, or ask us to do it.
Can you give us a record of the work?
Yes. We record the locations we’ve sealed and the products used.
The process
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes from a few hours to a few days, depending on the number of gaps and the access, including the tidy-up. Parking around Clewer is generally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We start with the survey or action list, checking the size and surfaces of every gap.
- Old or unsuitable sealant is cut out and the gap cleaned.
- Where the tested detail needs backing or fill, we fit it.
- We apply the fire-rated or intumescent sealant to the specified depth and tool it.
- Finally, we list where we worked and what we used, for your records.
How to prepare
- Let us know about earlier repairs to the joints
- Keep pets and children clear of the area while we work
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
For fire rated sealant in Clewer, phone 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before any work starts.
Advice
How we quote for fire rated sealant
Your quote is based on your job. We take into account:
- Whether the work is at height
- Mould in or behind the old joints
- The number of rooms or windows
- Which sealant suits the joint
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Asking for a quote
What to tell us when you ask for a quote:
- What’s wrong with the joints now
- Roughly how big the job is
- Where the job is, and your postcode
- Whether it’s a home or a business
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work and give you a clear quote.
Aftercare tips
Looking after new joints is easy:
- Don’t fill fire-stopping gaps with ordinary foam or silicone
- Flag any open gap you spot round a pipe or cable
- Allow for resealing whenever new services are run
- Ask which product was used before you paint
Don’t drill through or remove a fire seal without putting it back properly. If you need new services through a sealed wall, plan the fire stopping as part of the job.
A gap left open in a fire-resisting wall or floor lets smoke spread in ways the building wasn’t designed for. Sealing it early is a simple step to take.
More services for Clewer
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.
Service penetrations
Different services need different details: metal pipes, cables and plastic pipes are not treated the same. Each one is sealed to the product’s tested detail.