Kent · England
Fire Rated Sealant in Round Street
We cover Round Street for intumescent and fire-rated sealant around gaps, frames and service penetrations. Old material cut out, joints cleaned and sealed neatly.
- Open joints along the top of partitions
- Door frames with gaps between frame and wall
- Gaps flagged on a fire risk assessment
How the visit works
The work is kept neat and contained to the area we are working on, so you can get on with your day. Expect the work to take from a few hours to a few days, depending on the number of gaps and the access. Somewhere like Round Street needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We begin by agreeing the list of gaps from your assessor’s or designer’s requirements.
- We measure every gap and note what it’s in and what passes through.
- Unsuitable material such as ordinary foam or silicone is cut out.
- The specified fire-rated sealant goes in over any backing its detail requires.
- Every location is recorded with the product used for your records.
Getting ready for the visit
- Mention any parking rules near the property
- Tell us about access, such as stairs, a lift or high-level joints
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
Advice
About our fire rated sealant in Round Street
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 detail is what we take care over, one gap at a time. We work on door frames, flats & HMOs and plasterboard & masonry, and common reasons people get in touch are ordinary sealant used where a fire-rated product was needed and open joints along the top of partitions.
For holiday lets, converted business premises or a community building near Round Street, the washrooms, kitchens and any fire-rated joints need the same care as a big site.
We stand behind the work with a one-year guarantee, so you are not left on your own once the job is done.
- Place
- Round Street (DA13)
- Region
- Kent
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Should I try it myself first?
If you are set on DIY, put the effort into 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.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Why act early in Round Street
Waiting for the next refit can leave a gap open for years. Sealing the gap now is a contained job on its own. In a small place like Round Street, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, call 0345 464 0079 or send us an email for an honest opinion and a quote.
Why choose Mr Mastic in Round Street
- Over 20 years’ experience
- We leave the area clean and tidy
- Every job guaranteed for a year
- Homes, businesses and hotels
See what affects the cost or our reviews.
Also near Round Street
Other services in Round Street
Round Street: your questions answered
Do you work for landlords with property near Sole Street station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Is Round Street in your area for fire rated sealant?
Yes, Round Street is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Where do you work from?
We work from Crawley. We cover Round Street and the rest of Kent.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
Do you provide details of the products used?
Yes. You get a list of where we worked and what we used to keep with your fire safety documents.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
What does intumescent mean?
Intumescent means it swells when heated. It’s one type of fire-rated sealant; which product suits depends on the gap, the substrate and the service.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
When something else is needed
Sealant is not the answer to every problem, and we’ll tell you before any work starts. It won’t solve:
- Fire doors that need new seals, closers or hardware
- A wall that is not a fire-resisting element to begin with
- Large holes that need a different fire-stopping system
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Plasterboard & masonry
- Linear gaps
- Pipe & cable gaps
- Service penetrations
- Door frames
- Flats & HMOs
How the job changes by surface
Plasterboard walls
Service holes in plasterboard are often rough and oversized. Gaps that are too big for sealant alone need a different detail, and we will tell you.
Linear gaps
Linear gaps run along the head of walls, at floor edges and between panels. We seal them to the tested detail, with backing where it’s needed.
What affects the quote in Round Street
Jobs vary more than people expect. What affects the quote:
- Whether there’s mould to deal with
- How many areas need sealing
- The size of the job
- Working hours on commercial sites
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
Photos by email are helpful but not essential. Please mention:
- If it’s domestic, commercial or a hotel
- Pictures of the joints, sent by email
- How many joints, rooms or windows are involved
- Any access issues, like height or stairs
We quote each job on its own, so the first step is telling us about yours. Just call 0345 464 0079 or email us with the details, and photos are welcome.
What fire rated sealant looks like in Round Street
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 are given, installing the product to its tested details.
For site and facilities teams at buildings such as Cobham Primary School, fire-stopping around service openings should be restored whenever new services go in. For landlords with property near Sole Street station, fire-rated sealant around pipes and cables through walls and floors needs making good whenever new services go through. For buildings such as St Mary's Room, gaps around pipes and cables are worth checking after any building work there.
Round Street is about 3 miles south of Gravesend, in Kent. Across the DA13 area, we cover fire rated sealant for homes and businesses. Round Street is one of 922 places in Kent we cover. Our London page covers work nearby.
Every address in DA13 is within our area for fire rated sealant, from the main roads to the quietest streets. Nearby, we also carry out fire rated sealant in Sole Street (1 mile south), Gold Street (1 mile south-east), Nash Street (1 mile west), Meopham (1 mile south-west) and Henley Street (1 mile south-east). Larger places within reach include Maidstone (11 miles south-east), Dartford (8 miles north-west), Sevenoaks (11 miles south-west), Gravesend (3 miles north), Tonbridge (14 miles south) and Northfleet (3 miles north-west).
Local landmarks in Round Street
Locally, jobs take us to homes and businesses close to The Railway Inn, Jeskyns and Meopham School. The nearest railway station is Sole Street station, about 0.6 miles south. A little further out are Gravesham Museum (3.5 miles north) and Gravesham Community Hospital (3.6 miles north). Green spaces nearby include Gad's Hill and Ranscombe Farm.
Landlord and commercial work in Round Street
Letting agents and landlords in Round Street can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.