Kent · England
Fire Rated Sealant in Grubb Street
Specialist fire rated sealant for Grubb Street: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Gaps filled with a product that is not fire-rated
- Seals cut through by electricians, plumbers or data installers
- Door frames with gaps between frame and wall
Fire rated sealant in Grubb Street
We don’t assess buildings or decide what fire stopping is needed; 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. We work on flats & HMOs, service penetrations and door frames, and people most often call us about gaps around pipes and cables through fire-resisting walls and fire seals that have cracked with movement.
For holiday lets, converted business premises or a community building near Grubb Street, washroom and kitchen sealant and any fire-rated joints need the same attention as anywhere.
Our work is backed for twelve months.
- Where
- Grubb Street (DA2)
- Region
- Kent
- Cover
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Your questions about fire rated sealant in Grubb Street
Will you come out to Grubb Street?
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.
Do you cover Grubb Street for fire rated sealant?
Yes, Grubb Street is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
Where is Mr Mastic based?
Our base is Crawley. We work across South East England, London and Scotland.
What should I tell you?
The location, the problem and the rough size of the job. Photos by email help too.
Can I do it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
What does fire rated sealant cost?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Is there any odour?
That depends on the sealant. Some smell for a while, some hardly at all.
Are you insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
What affects the quote in Grubb Street
Jobs vary more than people expect. What affects the quote:
- Working hours on commercial sites
- How many rooms, windows or areas are involved
- Which sealant suits the joint
- Any mould that needs treating
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Asking for a quote
To make quoting easier, please include:
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
- The address or postcode of the job
Call for a quick quote, or email us if that’s easier. Tell us about the joints that need doing and we will talk you through the work and send you a clear quote.
Leave it or put it right?
Fire-rated sealants are less forgiving than ordinary ones. Depth, backing and surface preparation all affect how a seal performs, so we follow the maker’s details on every gap. Older cottages and farmhouses around Grubb Street can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Doing several joints on one visit usually makes better use of the time than several visits. We will give you a clear price for the lot.
Why Grubb Street clients choose us
- An ARBOMaster approved applicator
- Tidy, careful work
- Anti-fungal silicone where joints get wet
- Arbo and Everbuild products
Nearby places to Grubb Street
What else we do in Grubb Street
Surface by surface
Door frames
A door can only do its job if the gap behind its frame is sealed too. We seal that gap with a fire-rated sealant suited to the frame and wall.
Plasterboard walls
Plasterboard partitions are common in flats, offices and conversions. We use a product tested in that kind of wall for the gap we are sealing.
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Honest limits
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Problems with the door itself rather than the gap around the frame
- Construction that does not provide fire resistance on its own
- Issuing a fire rating or certificate for a building
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
Joints and surfaces we work on
- Pipe & cable gaps
- Linear gaps
- Door frames
- Plasterboard & masonry
- Service penetrations
- Flats & HMOs
Commercial buildings in Grubb 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, and gaps around services are often picked up there. We work to the specification you’re given, installing the product to its tested details.
Schools such as Greenlands Primary School are buildings too, and gaps opened by contractors for new cabling are a common finding in schools and offices. If you look after a church, hall or community building such as Church of Saint Mary Magdalene, service openings in its walls need the right fire-rated sealant, as in any building.
Grubb Street is about 3 miles south-west of Northfleet, in Kent. Whether you’re in the middle of Grubb Street or further out, we cover fire rated sealant for every kind of property. Our Kent coverage runs to 922 places, and Grubb Street is one of them. For nearby work, see our London page.
Here we cover the DA2 postcode area for fire rated sealant. Close by, we work in Green Street Green (1 mile north), Westwood (1 mile north-east), St Margarets (1 mile west), South Darenth (1 mile west) and Bean (1 mile north). Larger places within reach include Maidstone (14 miles south-east), Dartford (4 miles north-west), Sevenoaks (10 miles south-west), Gravesend (5 miles north-east), Tonbridge (14 miles south) and Northfleet (3 miles north-east).
Landmarks near Grubb Street
Locally, jobs take us to homes and businesses close to Longfield Chalk Bank, Railway Tavern and Longfield Academy. The closest station to Grubb Street is Longfield station, about 1 mile south-east of the centre. A little further out are Stone Castle (2.6 miles north) and Darent Valley Hospital (2.3 miles north-west). Open spaces near Grubb Street include Sawyers Lake.
When to call us in Grubb Street
Movement in the structure can open gaps too: a seal that cracks or pulls away leaves a path for smoke. Damage from cleaning, knocks and maintenance adds to it.
Keep an eye out for these signs:
- Open gaps behind door architraves
- Open holes round services passing through fire walls
- Joints picked up in a fire-stopping survey
- Seals cut through by electricians, plumbers or data installers
Letting a property close to Longfield station? Then any gap left by new services in shared walls should be closed with a fire-rated product.
What to look for in a quote
- How long the guarantee is
- What happens if they find a problem under the old sealant
- Whether all the old sealant comes out first
- Are they insured?
What happens on the day
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it generally takes from a few hours to a few days, depending on the number of gaps and the access. Somewhere like Grubb 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 plan the order of work and access, floor by floor or flat by flat.
- We take out any damaged or unsuitable sealant.
- Gaps are cleaned of dust and loose material.
- The fire-rated or intumescent sealant is applied and tooled to the tested detail.
- We record what was done and flag anything that needs a different system.
Getting ready for the visit
- Move anything stored near the joints
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any water getting in
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Simply ring 0345 464 0079 or drop us an email and describe the job and send pictures if you have them.