Kent · England
Grubb Street Remedial Sealant
Removing failed, mouldy or leaking sealant and putting it right for homes and businesses in Grubb Street and across Kent. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Wide, uneven beads that look worse than the old ones
- Leaks that keep coming back after resealing
- Products that weren’t meant for the joint
Remedial sealant in Grubb Street, done properly
Two decades of sealant work means we recognise most failures quickly. We’re ARBOMaster approved and fully insured, and remedial work carries our one-year guarantee. We work on shrunken worktop sealant, botched or over-sealed joints and mouldy bath & shower sealant, and people most often call us about worktop sealant that has shrunk and split and torn expansion joints.
For a small place like Grubb Street, remedial sealant is planned like any other job: it just means planning the journey and access beforehand. In the bathroom or kitchen, the work is the same as in any town.
We stand behind the work with a 12-month guarantee.
- Place
- Grubb Street (DA2)
- Region
- Kent
- Cover
- One year on every job
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Do you need remedial sealant in Grubb Street?
A lot of failed joints have been sealed over rather than replaced. New silicone can’t stick to the old bead, so the new layer peels, and damp and mould settle between them.
If you can see any of these, it’s time to have the joints looked at:
- Over-sealed joints coming away
- Mould trapped under a layer of silicone
- Wide, uneven beads that look worse than the old ones
- Gaps opening along the back of the worktop
For site and facilities teams at buildings such as Greenlands Primary School, washroom and kitchen sealant there needs the same care as at home, and schools and businesses are part of our work as well as homes.
What your quote should include
- Are they insured?
- Which sealant they’ll use, and why
- Which colour the sealant will be
- How much experience the applicator has
What we do, step by step
We keep the work tidy and contained to the area we are working on, so you can get on with your day. The job normally takes a few hours, depending on how many layers have to come out, and we explain the cure time before we leave. For a village or hamlet like Grubb Street, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Surrounding tiles, trays and frames are protected first.
- The botched or failed sealant is cut away completely.
- The joint is degreased and checked for movement and leaks.
- New sealant goes in once the joint is dry, and is tooled smooth.
- We give you the cure time and explain what caused the failure.
Getting ready for the visit
- Mention if the joints have been sealed before
- Plan for the work area to be out of bounds to pets and children
- Let us know about stairs, lifts or work at height
Get a quote
If you are in Grubb Street and need remedial sealant, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Read more
What affects the cost of remedial sealant
Some jobs are bigger than they look, and some smaller. The main factors:
- The number and length of the joints
- How easy the joints are to reach
- When we can work, for business premises
- Whether there’s mould to deal with
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, call 0345 464 0079 or send us an email for an honest opinion and a quote.
Asking for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- The rough size of the job
- Photos by email, if that is easy
- Where the job is, and your postcode
- Whether it’s a home or a business
We don’t publish a price list. Instead, we give you a clear price for your job. To get started, phone 0345 464 0079 or send us an email.
Remedial sealant around Grubb Street
Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
If you live in an older home near Church of Saint Mary Magdalene, timber floors under older bathrooms flex, so joints need a sealant that moves with them. Letting a property close to Longfield station? Then failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
Grubb Street is about 3 miles south-west of Northfleet, in Kent. Jobs in Grubb Street get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 922 places across Kent, large and small. You can also see our page for London, about 17 miles away.
We work across DA2 for remedial sealant. Neighbouring places we cover for remedial sealant include 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). Further out, we also cover 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).
Local landmarks in Grubb Street
Typical jobs here are in homes near Longfield Chalk Bank, Railway Tavern and Longfield Academy and the streets around them. For rail, the closest station is Longfield station, about 1 mile south-east. Other landmarks nearby include Stone Castle (2.6 miles north) and Darent Valley Hospital (2.3 miles north-west). The countryside around Grubb Street includes Sawyers Lake.
Places near Grubb Street
More services for Grubb Street
What sealant work can’t fix
Some problems need a builder, plumber or other trade rather than us:
- Plumbing leaks behind walls or under trays
- A bath, tray or worktop that moves until it’s properly fixed
- Cracks in the fitting rather than the joint
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before booking.
What we seal
- Botched or over-sealed joints
- Shrunken worktop sealant
- Mouldy bath & shower sealant
- Failed movement joints
- Expansion joints
- Leaking tray & enclosure joints
Landlords, agents and businesses in Grubb Street
We also work for property managers and facilities teams. Several sites can be quoted together, and we are fully insured.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
What happens if it’s left?
A joint that has failed twice will fail again unless the cause is dealt with. Finding it, whether movement, water from elsewhere or an unsuitable product, ends the cycle. Around Grubb Street, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before we start.
Why book with us
- Over 20 years’ experience
- We agree the colour with you first
- Approved under the ARBOMaster scheme
- Anti-fungal sanitary silicone in wet areas
FAQs for Grubb Street
I let a flat near Longfield station. Can you help?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll send you a clear quote.
Do you cover Grubb Street for remedial sealant?
Yes. Our work covers London and the South East, and Grubb Street is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear price.
Is it messy?
No. We work neatly, protect the area around the joints and tidy up afterwards.
How long does the work take?
It takes a few hours for most joints, depending on how much old sealant has to come out. We will give you a timescale when we quote.
What should I tell you?
The location, the problem and the rough size of the job. Photos by email help too.
Where is Mr Mastic based?
Our base is in Crawley, and we work across South East England, London and Scotland.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Someone resealed my shower and it’s leaking again. Can you help?
Yes, generally. We check it’s the sealant and not the tray, valve or waste, then the joints are stripped and resealed.
DIY versus a professional finish
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.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.