West Sussex · England
Thorney Island Remedial Sealant
Remedial sealant across Thorney Island and nearby, with old sealant always removed completely and a 12-month guarantee.
- Torn expansion joints
- Sealant applied over old sealant that has lifted
- Caulk or the wrong sealant used in a wet area
Remedial sealant in Thorney Island
Water on the floor does not always mean failed silicone. Cracked trays, leaking wastes and faulty valves often look like a sealant problem. If that is what we find, we will tell you rather than reseal something that will not fix it. We work on shrunken worktop sealant, leaking tray & enclosure joints and failed movement joints, and common reasons people get in touch are gaps opening along the back of the worktop and sealant peeling off a dusty or damp surface.
Being in a small place like Thorney Island makes no difference to the job itself: it just means planning the journey and access beforehand. Once we are there, the bathroom or kitchen gets the same care as anywhere else.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or drop us an email.
- Place
- Thorney Island (PO10)
- Region
- West Sussex
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
Most of a good job is in the preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it normally takes a few hours, depending on how many layers have to come out. In a small place like Thorney Island, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we find out how and where the joint has failed.
- We strip the joint completely, removing any layers below.
- We clean the joint, treat any mould and let it dry.
- Where the joint moves, backing and a flexible sealant suited to the movement go in.
- Finally we finish the joint and talk you through what we found.
Before we arrive
- On commercial sites, let us know about site rules
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us if parking is tricky
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work and give you a clear quote.
Read more
What affects the cost of remedial sealant
Some jobs are bigger than they look, and some smaller. The main factors:
- Access and height
- The old material and how stubborn it is
- Which sealant suits the joint
- Any mould that needs treating
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
What we need to know
You do not need to know the technical terms. Just tell us:
- Access, such as stairs, a lift or height
- Whether it has been sealed before
- The address or postcode of the job
- Pictures of the joints, sent by email
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Bathrooms and kitchens in Thorney Island
Thorney Island is close to 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, which leaves limescale on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
If you look after a building such as Thorney Island Community Primary School, its toilets, changing areas and kitchens need their sealant renewed like any other building’s. For an older house near a landmark such as The Parish Church of St Nicholas, timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Thorney Island is about 4 miles south-east of Havant, in West Sussex. We carry out remedial sealant for homes and businesses in Thorney Island and the surrounding area, as part of our work across West Sussex. Thorney Island is one of 371 towns and villages in West Sussex we cover for remedial sealant. Our Portsmouth page covers work nearby.
Jobs for remedial sealant in PO10 works the same way as everywhere else we cover. Streets in the area include Hunter Road, Emsworth Road and Spartan Close. Other places close to Thorney Island include West Thorney (1 mile south-east), North Hayling (1 mile west), Tye (1 mile south-west), Northney (1 mile west) and Emsworth (2 miles north). Larger places within reach include Bognor Regis (11 miles east), Chichester (7 miles east), Selsey (9 miles south-east), Portfield (7 miles east), Yapton (14 miles east) and East Wittering (5 miles south-east).
What’s near Thorney Island
Around Thorney Island, our work takes us to homes and buildings near Bourne Community College and Eames Farm. Thorney Island’s nearest station is Southbourne station, roughly 1.8 miles north-east of the centre. A little further out are Havant War Memorial Hospital (3.2 miles north-west) and Emsworth Museum (1.6 miles north). The countryside around Thorney Island includes Nutborne Marshes.
What we’re called out for in Thorney Island
Using the wrong product is a common cause: caulk where it gets wet, rigid sealant where things move, or an acetoxy silicone on a surface it can mark. Each fails in its own way.
People generally contact us after spotting something like this:
- Floor or wall movement joints that have failed
- Sealant applied over old sealant that has lifted
- Thick, messy sealant smeared over tiles
- Sealant that came away because the surface wasn’t prepared
If you let a flat or house near Southbourne station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
Questions to ask before booking
- Whether they’re fully insured
- What the cure time is
- Which sealant they’ll use, and why
- The length of the guarantee
For landlords and businesses
We also work for property managers and facilities teams in Thorney Island and across West Sussex. We can quote a run of properties together, and we’re fully insured for the work.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
When something else is needed
We won’t take on work that won’t last, so these are the limits:
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- A cracked shower tray or bath (that needs repair or replacing)
- Sealant in an older building that needs testing for asbestos first
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer.
What we seal
- Expansion joints
- Failed movement joints
- Mouldy bath & shower sealant
- Botched or over-sealed joints
- Leaking tray & enclosure joints
- Shrunken worktop sealant
Also near Thorney Island
What else we do in Thorney Island
What happens if it’s left?
A joint that has failed twice will fail again unless the cause is dealt with. Taking time to find the cause, whether it’s movement, a leak or the wrong product, is what stops it happening again. Older cottages and farmhouses around Thorney Island can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or send us an email and we’ll talk you through it.
What you get with us
- Homes, businesses and hotels
- Sealant colour chosen to suit
- We agree the colour with you first
- Approved under the ARBOMaster scheme
Read our cost guide and our reviews.
Should I try it myself first?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Common questions in Thorney Island
Can you do remedial sealant in Thorney Island?
Yes, Thorney Island is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear price.
Do you work for landlords with property near Southbourne station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
What if resealing won’t fix my leak?
We check for that before we reseal. If the fault is elsewhere, you’ll know before any work is done.
Do you offer different sealant colours?
Most of the time, yes. We’ll tell you which colours the right product comes in and agree one before any work starts.
Where are you based?
Our base is Crawley. We work across South East England, London and Scotland.
Do you guarantee remedial jobs?
Yes, for 12 months. Where we have flagged another fault, it needs fixing for the joint to last.
Are you insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.