Greater London · England
Fire-rated sealant in Roundshaw, Greater London
We cover Roundshaw for 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
- Open gaps behind door architraves
- Joints picked up in a fire-stopping survey
About our fire rated sealant in Roundshaw
Deciding which gaps need fire stopping is not our role; that comes from your fire risk assessor, designer or building control. Our part is applying the specified sealant carefully, to the right depth and with the right backing. If you’re dealing with fire stopping disturbed by later work and fire seals that have cracked with movement, we can help, whatever the surface.
In London, a commercial job often starts with access: loading bays, building rules and lifts. For a building in Roundshaw, we agree timings and access before anything starts.
You are covered for a year from the day we finish. If anything is not right with it, phone 0345 464 0079 or drop us an email.
- Where
- Roundshaw (SM6, CR8, CR0)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Surface 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.
Flats and HMOs
Flats and HMOs rely on fire separation between homes and the common parts. We work through the gaps on your assessment, flat by flat if needed.
FAQs for Roundshaw
Is parking an issue for fire rated sealant in Roundshaw?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Do you work in hotels near Roundshaw?
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.
Do you guarantee your work?
Yes, always. Each job is guaranteed for twelve months, wherever you are.
I’m a tenant. Can you help?
Yes. Ask your landlord first, and we can send them the quote if that helps.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Will you leave a mess?
We keep the work tidy. We protect what’s around the joints, and we clear up when we are done.
What do you need from me for a quote?
Tell us what needs doing and where, with pictures by email if possible. If we need more, we’ll ask.
Can you match the sealant colour?
We’ll suggest a colour to suit the surroundings. The choice depends on the product the joint needs.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
When something else is needed
To be straight with you, some problems need a different trade:
- Fire doors that need new seals, closers or hardware
- Deciding what fire stopping a building needs
- Sign-off of the building, which sits with building control or your assessor
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Where we work in Roundshaw
- Plasterboard & masonry
- Flats & HMOs
- Door frames
- Service penetrations
- Linear gaps
- Pipe & cable gaps
Why it’s worth doing now in Roundshaw
Paying for fire stopping that has to be redone is a false economy. Work that does not follow the tested detail may have to come out again when the building is next checked. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in Roundshaw, the repair is bigger than the sealant job would have been.
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote.
Why choose Mr Mastic in Roundshaw
- An ARBOMaster approved applicator
- A 12-month guarantee on all work
- We leave the area clean and tidy
- Anti-fungal silicone where joints get wet
Take a look at what affects the cost and customer reviews.
How the visit works
We bring everything the job needs with us. After a quick look at the joints together, the area is protected and the work begins. Most jobs take anything from a few hours to several days, depending on how many gaps there are. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Roundshaw. A visitor permit or a nearby bay makes the visit run more smoothly.
- Before starting, we go through the specification or action list with you.
- Each gap is measured and its substrate and service noted.
- Unsuitable material such as ordinary foam or silicone is cut out.
- We fit backing where needed and apply the fire-rated sealant to depth.
- Every location is recorded with the product used.
Preparing for the visit
- Mention if the joints have been sealed before
- Mention any parking rules near the property
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
There’s no standard price list. Instead, we give you a clear price for your job. To get started, phone 0345 464 0079 or send us an email.
Related advice
Places near Roundshaw
More services for Roundshaw
For landlords and businesses
We also work for property managers and facilities teams. Several sites can go on one quote, and we are fully insured for the work.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
Commercial buildings in Roundshaw
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. There are hotels and other places to stay in and around Roundshaw. For hotels, a room-by-room programme keeps most rooms in use while the work goes on.
Schools such as Wallington Primary Academy are buildings too, and service openings in fire-resisting walls need checking after any refurbishment. Letting a property close to Wallington station? Then fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. If you look after a church, hall or community building such as St. Paul's, gaps around pipes and cables are worth checking after any building work there.
Roundshaw is about 2 miles south-west of Croydon, in Greater London. We carry out fire rated sealant for homes and businesses in Roundshaw. Roundshaw is one of 764 towns and villages in Greater London we cover for fire rated sealant. Our London page covers work nearby (10 miles or so).
Our applicators cover all of SM6, CR8 and CR0 for fire rated sealant and the streets around it. If you need fire rated sealant at a property on Link Lane, Milton Road and Redwing Road or anywhere close by, our applicators can take on the job. We also cover Russell Hill (1 mile east), Bandonhill (1 mile north), Peaks Hill (1 mile south), Waddon (1 mile north-east) and Wallington (1 mile north-west). Larger places within reach include London (10 miles north), City of Westminster (11 miles north), Marylebone (11 miles north), Kensington (11 miles north), St Pancras (12 miles north) and Shoreditch (12 miles north).
What’s near Roundshaw
Typical jobs here are in homes near Wilson's School, Waddon Ponds and The John Fisher School and the streets around them. Roundshaw’s nearest station is Wallington station, about 0.9 miles north-west. A little further out are Purley War Memorial Hospital (1.2 miles south-east) and Croydon Airport Visitor Centre (0.6 miles east). For a walk, there’s Roundshaw Downs and Duppas Hill.
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Never patch a fire seal with standard sealant
- Report cracked or damaged seals as soon as you notice them
- Allow for resealing whenever new services are run
- Include hidden areas like risers in routine checks
Don’t add foam, filler or ordinary sealant over a fire seal. Repairs should use a matching fire-rated product. Ask us if you are not sure which product was used.
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.