East Sussex · England
Remedial Sealant in Firle
Removing failed, mouldy or leaking sealant and putting it right for homeowners, landlords and businesses in Firle. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Mould trapped under a layer of silicone
- Kitchen joints letting water behind the worktop
- Beads that never stuck properly
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
If you do try it yourself, take your time over the 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.
About our remedial sealant in Firle
Getting old sealant out properly is slow, careful work. Every layer is cut out, the residue cleaned off and the joint degreased, taking care not to scratch the surfaces around it. Only then can new sealant bond. If you’re dealing with sealant applied over old sealant that has lifted and black mould underneath the bead, we can help.
Somewhere as small as Firle, homes tend to be cottages, farmhouses or converted buildings, with some newer houses too. Movement in older walls and floors tends to show first as cracked grout or split sealant.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Firle (BN8)
- Wider area
- East Sussex
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What happens on the day
When we arrive, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before work begins. The work usually takes a few hours for a typical bath or shower, longer where several layers have been applied. In a small place like Firle, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- You get the cure time and our view on why the joint failed.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Let us know about stairs, lifts or work at height
- Move anything stored near the joints
How to get a quote
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or drop us an email.
Related advice
What sealant work can’t fix
We will not take on work that will not last, so here’s what sealant can’t put right:
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
- Cracks in the fitting rather than the joint
- A bath, tray or worktop that moves until it’s properly fixed
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think before booking.
Joints and surfaces we work on
- Failed movement joints
- Shrunken worktop sealant
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
- Botched or over-sealed joints
- Expansion joints
Leave it or put it right?
Mould under a bead can’t be reached by cleaning. The layers have to come out, so the joint can be treated and resealed. Older cottages and farmhouses around Firle can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Why choose Mr Mastic in Firle
- Neat joints and a tidy finish
- 180+ five-star Google reviews
- Trusted Arbo and Everbuild sealants
- Fully insured
Take a look at how sealant jobs are priced or our reviews.
Places near Firle
What else we do in Firle
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
What the job involves on each surface
Over-sealed & botched joints
Every layer has to come out, and silicone residue is cleaned off the tiles too. Only a clean joint will take a new bead.
Leaking trays & enclosures
If the tray is cracked, or the leak is from the valve or waste, sealant will not fix it. We’ll tell you what we find.
Remedial sealant in Firle: local notes
Hard water is the norm across most of the South East, which leaves limescale on sealant, grout and fittings.
For landlords with property near Glynde station, a joint that keeps failing is best fixed properly while the property is empty. If you look after a building such as Firle Church of England 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. For an older house near a landmark such as The Parish Church of St Peter, walls and floors in older homes can move, and sealant and grout show it first.
Firle is about 4 miles south-east of Lewes, in East Sussex. Across the BN8 area, our applicators can take on remedial sealant. 289 places in East Sussex are on our list, from the larger towns to small villages. For nearby work, see our Brighton page, about 9 miles away.
Here we cover the BN8 postcode area for remedial sealant. If you need remedial sealant at a property on The Street, Bostal Road and Firle Bostal or anywhere close by, we can help. If you are just outside Firle, we cover Glynde (1 mile north-west), Glyndebourne (2 miles north-west), Ashton Green (3 miles north), South Heighton (3 miles south) and Ringmer (3 miles north). Within a short drive, we also cover Eastbourne (10 miles south-east), Seaford (5 miles south), Lewes (4 miles north-west), Hailsham (8 miles east), Crowborough (14 miles north) and Uckfield (8 miles north).
What’s near Firle
In Firle, that means homes and buildings near Lewes and Laughton Levels, The Ram Inn and Science and Technology Policy Research. The nearest railway station is Glynde station, about 1 mile north-west. Other landmarks nearby include Lewes Castle (3.8 miles north-west) and Museum of Agricultural Bygones (3.2 miles north). Open spaces near Firle include Southerham Farm and Firle Beacon.
Firle: your questions answered
Is Firle within the area you cover?
Yes, Firle is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I let a flat near Glynde station. Can you help?
Yes. We work for landlords and letting agents as well as householders, 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’ll send you a clear quote.
Can you remove sealant that is been put over old sealant?
Yes. We remove every layer; new silicone does not bond to old silicone, which is why over-sealing fails.
Can you strip sealant from an acrylic tray safely?
Yes. We cut and lift the old sealant with tools suited to the surface, then clean off the residue. We point out any damage that’s already there.
Can you reseal a split movement joint?
Yes. Where mortar or filler has been used instead of sealant, it’s removed where it can be, then the joint is sealed properly.
Can you match the sealant colour?
We’ll suggest a colour to suit the surroundings. The product needed can limit the range.
Where are you based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Is remedial work guaranteed?
Yes. Remedial work carries the same 12-month guarantee as all our work.
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Do not point over movement joints
- Check trays and worktops don’t move
- Get the cause of a repeat leak found before resealing
- Act on a lifting corner straight away
Where we have pointed out another fault, have it put right, because the new sealant cannot hold back a problem underneath.
Movement joints that have split let water into the structure, and the longer it’s left, the more the joint edges break down. A joint with sound edges is far easier to reseal.