East Sussex · England
Remedial sealant & repairs in Offham, East Sussex
Removing failed, mouldy or leaking sealant and putting it right in Offham, with a one-year guarantee on every job. Ask us for a quote.
- Repeat leaks from the same joint
- Gaps opening along the back of the worktop
- Movement joints that have split or pulled away
How the job changes by surface
Leaking trays & enclosures
When failed joints are the cause, they’re all cut out and renewed, including the screen profile and tray edges.
Windows & doors
Frames resealed over the top end up with hard, layered mastic. All of it is cut out and the frame and wall cleaned.
Remedial sealant in Offham, done properly
Not every leak is a sealant leak. A cracked tray, a failed shower valve or a leaking waste can look just the same. When the fault is elsewhere, we say so instead of resealing for the sake of it. Typical jobs include repeat leaks from the same joint and caulk or the wrong sealant used in a wet area, across leaking tray & enclosure joints, failed movement joints and expansion joints.
In a village or hamlet like Offham, homes are often older cottages and farmhouses alongside a few newer houses. Movement in older walls and floors tends to show first as cracked grout or split sealant.
All our work is covered by our 12-month guarantee.
- Place
- Offham (BN7)
- Region
- East Sussex
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Should I try it myself first?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Leave it or put it right?
Mould under a bead can’t be reached by cleaning. The layers have to come out. Where a wall is exposed, as many are in small places like Offham, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
What you pay reflects the work, not guesswork. That is why we ask a few questions first.
Why choose Mr Mastic in Offham
- Colour picked to suit the job
- ARBOMaster approved applicator
- We are fully insured
- You choose the colour before work begins
See our cost guide or what customers say.
How we quote for remedial sealant
You will get a clear quote before work begins. It’s based on:
- Access and height
- Any mould that needs treating
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or send us an email.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The address or postcode of the job
- If it’s domestic, commercial or a hotel
- Any previous sealing or DIY work
- Roughly how big the job is
Every job is quoted individually. Simply phone 0345 464 0079 or email us and describe the job and send pictures if you have them.
Looking after it afterwards
To keep the joints looking good and working properly:
- Act on a lifting corner straight away
- Never seal over old silicone
- Clean sealant with mild products only
- Check trays and worktops don’t move
If the joint ever needs renewing, have it cut out, not sealed over. Over-sealing is how many remedial jobs start, so the old bead should always come out first.
If a joint has failed more than once, stop resealing it. Get the cause found first, otherwise the next attempt will fail too.
Your questions about remedial sealant in Offham
Do you work for hotels and guest houses in Offham?
Yes, hospitality work, including hotels, is part of what we do. Work can be planned room by room, and out-of-hours working can be arranged.
Do you work for landlords with property near Cooksbridge station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or email us with the details for a clear quote.
Where are you based?
We work from Crawley. Our applicators cover Offham.
Will there be a smell?
Possibly a little. Any smell clears as the sealant cures.
Will the old sealant be removed?
Yes, always, and completely. New sealant won’t bond properly to old, so the joint is cleaned back first.
How long does the work take?
Allow a few hours for a typical bath or shower, longer where several layers have been applied. You’ll know the timing when we quote.
Can you match the sealant colour?
We help you choose a colour that suits, from white and clear to greys and other shades. The product needed can limit the range.
Are you an approved applicator?
Yes. We’re approved under the ARBOMaster scheme.
What we cannot put right
A few problems are outside what sealant work can do:
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- A bath, tray or worktop that moves until it’s properly fixed
- A tray or bath that is cracked
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before you book.
Where we work in Offham
- Mouldy bath & shower sealant
- Expansion joints
- Shrunken worktop sealant
- Failed movement joints
- Leaking tray & enclosure joints
- Botched or over-sealed joints
Towns and villages near Offham
What else we do in Offham
Bathrooms and kitchens in Offham
There are hotels and other places to stay in and around Offham. As well as homes, we work in hotel bathrooms, where resealing and regrouting can be done room by room. Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings.
In the older streets around Church of St Peter, timber floors under older bathrooms flex, so joints need a sealant that moves with them. If you look after a building such as Wallands Community Primary School, its toilets, changing areas and kitchens need their sealant renewed like any other building’s. Rented homes near Cooksbridge station change hands often, and a joint that keeps failing is best fixed properly while the property is empty.
Offham is about 1 mile north-west of Lewes, in East Sussex. From the centre of Offham to the outskirts, remedial sealant is available for homes and businesses alike. Our area takes in 289 places across East Sussex, from the larger towns to small villages. We also work in Brighton, around 7 miles away.
Every address in BN7 is within our area for remedial sealant, from the main roads to the quietest streets. Neighbouring places we cover for remedial sealant include Hamsey (1 mile north-east), Lewes (1 mile south-east), South Malling (1 mile south-east), Southover (2 miles south-east) and Cliffe (2 miles south-east). We also work in nearby towns such as Eastbourne (15 miles south-east), Seaford (10 miles south-east), Hailsham (12 miles east), Crowborough (14 miles north-east), Uckfield (7 miles north-east) and Newhaven (7 miles south).
Near you in Offham
In Offham, that means homes and buildings near Railway Land, The Blacksmiths Arms and Lewes Old Grammar School, among other places. For rail, the closest station is Cooksbridge station, about 0.9 miles north of the centre. Well-known places in the area include Brighton And Hove Albion Football Club Museum (3.8 miles south-west) and Lewes Castle (1.5 miles south-east). Open spaces near Offham include Malling Down and Offham Hill.
What happens on the day
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it usually takes a few hours for a typical bath or shower, longer where several layers have been applied. In a small place like Offham, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- The failure is looked at first, so we know whether it’s sealant, movement or water from elsewhere.
- Each layer is cut out and the residue cleaned off.
- We treat any mould and dry the joint thoroughly.
- The right product goes in, with backing where the joint moves.
- We finish neatly and point out anything that needs another trade.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Let us know about earlier repairs to the joints
- Keep children and pets away from the work area
Ask for a quote
To get a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.