Kent · England
Remedial sealant & repairs in Guston, Kent
We cover Guston for removing failed, mouldy or leaking sealant and putting it right. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Dark patches showing through the sealant
- Beads that never stuck properly
- Leaks that keep coming back after resealing
How we handle remedial sealant in Guston
If a joint has been resealed and is leaking again, it’s worth a proper look. It helps to have pictures when you phone 0345 464 0079 or send us an email, and say how long ago it was last done. If you’re dealing with a shower that leaks however often it’s resealed and wide, uneven beads that look worse than the old ones, we can put it right, on botched or over-sealed joints, leaking tray & enclosure joints and mouldy bath & shower sealant alike.
Around Guston, it’s houses and cottages rather than flats, some with bathrooms tucked into older rooms or extensions. Sealant and grout wear out here just as they do anywhere: everything old comes out before the new sealant or grout goes in.
Each job carries a 12-month guarantee.
- Where
- Guston (CT15)
- Region
- Kent
- Cover
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What sealant work can’t fix
In fairness, some problems need a different trade:
- Water damage behind tiles that needs a tiler
- Plumbing leaks behind walls or under trays
- A bath, tray or worktop that moves until it’s properly fixed
If in doubt, call 0345 464 0079 or email us and we will say what we think before booking.
Where we work in Guston
- Failed movement joints
- Mouldy bath & shower sealant
- Leaking tray & enclosure joints
- Botched or over-sealed joints
- Shrunken worktop sealant
- Expansion joints
Guston questions
Will you come out to Guston?
Yes. Guston is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Martin Mill station. Can you help?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
How do I get a quote for remedial sealant in Guston?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Do you remove the old sealant?
Yes, every time. New sealant won’t bond properly to old, so the joint is cleaned back first.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Ventilation helps.
How long will it take to strip and reseal the joint?
It takes a few hours for a typical bath or shower, longer where several layers have been applied. We will give you a timescale when we quote.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Remedial sealant around Guston
Guston is within about 2 miles of the coast. Near the coast, holiday lets and guest houses can see bathrooms used by one guest after another, and sealant and grout that work that hard wear out sooner. Most of the South East has hard water, so limescale builds up on sealant, grout and fittings.
If you let a flat or house near Martin Mill station, botched sealant from a previous quick fix is easier to strip out between tenants. For site and facilities teams at buildings such as Duke of York's Royal Military 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. For an older house near a landmark such as Church of St Martin of Tours, older homes can move a little, which is hard on rigid grout and tired sealant.
Guston is about 2 miles north-east of Dover, in Kent. Whether you’re in the middle of Guston or further out, remedial sealant is available for homes and businesses alike, from flats and houses to offices and hotels. Guston is one of 922 towns and villages in Kent we cover. We also work in Chelmsford, around 54 miles away.
Here we cover the CT15 postcode area for remedial sealant. Streets in the area include The Street, Chance Meadow and The Lane, and we cover them all. We also cover East Langdon (1 mile north-east), Church Whitfield (1 mile north-west), West Cliffe (1 mile east), Martin Mill (2 miles north-east) and Charlton-in-Dover (2 miles south-west). Within a short drive, we also cover Canterbury (14 miles north-west), Folkestone (8 miles south-west), Ramsgate (13 miles north), Broadstairs (15 miles north), Deal (5 miles north-east) and Hythe (12 miles south-west).
Around Guston
We work in homes and buildings around Connaught Park, St Edmund's Catholic School and Swingate Inn. For rail, the closest station is Martin Mill station, about 1.6 miles north-east. Nearby you’ll also find Royal Victoria Hospital (1.9 miles south) and Dover Castle (1.8 miles south). Not far away are Dover Western Heights.
Places near Guston
Other services in Guston
What affects the quote in Guston
The price is agreed before any work begins. It’s based on:
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- Any working-time requirements on site
- How many areas need sealing
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Pictures of the joints, sent by email
- The problem you’ve noticed
- Roughly how big the job is
- Where the job is, and your postcode
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or email us.
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Aftercare tips
Good habits help new joints last longer. A few tips:
- Check trays and worktops do not move
- Keep an eye on the ceiling below the bathroom
- Use a soft cloth, not a scourer, on silicone
- Never fill a movement joint with mortar or grout
Give the new sealant its full cure time: normally around 24 hours, or as long as we advise.
Leaks through failed sealant grow over time. Every shower or downpour sends more water through, into whatever is behind or below. Sorting it early limits the damage.
What happens on the day
Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours for a typical bath or shower, longer where several layers have been applied. In a small place like Guston, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking the joint for movement, leaks and the reason it failed.
- We strip the joint completely, removing any layers below.
- We clean the joint, treat any mould and let it dry.
- We use the right backing and sealant for any joint that moves.
- The new joint is tooled neatly and we explain anything else we found.
How to prepare
- Clear the area around the work
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us if parking is tricky
Get a quote
For a quote, phone 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
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What the job involves on each surface
Movement & expansion joints
Joints filled with mortar, grout or rigid filler cannot move. Where it can be raked out, we replace it with flexible sealant.
Worktops & kitchens
If a worktop moves when you lean on it, the sealant will keep splitting. That needs refixing before resealing, and we’ll tell you if we find it.
Leave it or put it right?
Spraying mould remover on a sealed-over joint doesn’t reach what’s underneath. Removal is the only way to get at it, and the joint treated and dried before resealing. Older cottages and farmhouses around Guston can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
What it costs depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before any work starts.
What you get with us
- Any old sealant cut out fully, not covered over
- Colour agreed with you before we start
- Quality sealants from Arbo and Everbuild
- Anti-fungal silicone where joints get wet
See our cost guide or customer reviews.