Isle of Wight · England
Remedial sealant & repairs in St Lawrence, Isle of Wight
Remedial sealant across St Lawrence and nearby, with old sealant always removed completely and a 12-month guarantee.
- Worktop sealant that has shrunk and split
- Decorators’ caulk around a bath or shower
- Smears and lumps from a botched reseal
What the job involves on each surface
Windows & doors
A frame that keeps leaking may not be the mastic. If the frame joint is not the cause, we will say so.
Mouldy bath & shower sealant
Mould can sit behind the silicone, not just in it. Once it’s all removed, the joint is treated.
Remedial sealant for homes and businesses in St Lawrence
Some sealant jobs aren’t a simple reseal, because someone has already had a go. New sealant over old, smeared beads, unsuitable products and hidden mould all need stripping out before the joint can be done properly. We work on expansion joints, mouldy bath & shower sealant and leaking tray & enclosure joints, and common reasons people get in touch are a second bead peeling off the first and kitchen joints letting water behind the worktop.
Somewhere as small as St Lawrence, 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.
You are covered for a year from the day we finish. If there’s a problem with it, please call 0345 464 0079 or email us.
- Where
- St Lawrence (PO38)
- Region
- Isle of Wight
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Also in St Lawrence
How we quote for remedial sealant
Every job gets its own quote. This is what makes a difference:
- Access and height
- When we can work, for business premises
- Any mould that needs treating
- The amount of work
Combining jobs into one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- Roughly how big the job is
- Whether it has been sealed before
- Access, such as stairs, a lift or height
- Photos by email, if that’s easy
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or drop us an email.
What happens if it’s left?
A failed seal rarely means a new bathroom. When the fittings are sound, stripping and resealing the joints is often enough. If they’re not, we’ll tell you. Older cottages and farmhouses around St Lawrence can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
What you get with us
- Approved under the ARBOMaster scheme
- Homes, businesses and hotels
- White, clear, grey or another colour, product permitting
- Rated 4.9 stars on Google
See what affects the cost and customer reviews.
What we do, step by step
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for most joints, depending on how much old sealant has to come out, and the area is left clean. In a small place like St Lawrence, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we work out whether the problem is the sealant, movement or a leak.
- 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.
- The joint is tooled and you’re told about anything else we found.
Before we arrive
- Mention any tricky access
- Tell us about any water getting in
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
If you’re in St Lawrence and need remedial sealant, phone 0345 464 0079 or drop 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
When something else is needed
Before you book, it’s worth knowing the limits too:
- Movement from fittings that are not supported
- A cracked shower tray or bath (that needs repair or replacing)
- Failed tanking or loose tiles behind the sealant
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Mouldy bath & shower sealant
- Botched or over-sealed joints
- Failed movement joints
- Shrunken worktop sealant
- Leaking tray & enclosure joints
- Expansion joints
What remedial sealant looks like in St Lawrence
St Lawrence is within about 1 mile of the coast. Coastal homes, holiday lets and guest houses can see heavy bathroom use in busy months, 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 live in an older home near St Lawrence's Church, older homes can move a little, which is hard on rigid grout and tired sealant. If you let a flat or house near Shanklin station, a joint that keeps failing is best fixed properly while the property is empty.
St Lawrence is about 4 miles south-west of Shanklin, in the Isle of Wight. Jobs in St Lawrence get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our the Isle of Wight coverage runs to 125 places, and St Lawrence is one of them. There’s also a page for Portsmouth, roughly 17 miles from St Lawrence.
We work across the PO38 postcode area for remedial sealant and the streets around it. You will find streets such as Twining Road, Whitwell Road and Woolverton Road, and we cover them all. Other places close to St Lawrence include Steephill (1 mile east), Nettlecombe (1 mile north-west), Whitwell (1 mile north-west), Ventnor (1 mile east) and Bierley (2 miles north-west). We also work in nearby towns such as Newport (8 miles north), Ryde (10 miles north), Cowes (12 miles north), Sandown (6 miles north-east), Shanklin (4 miles north-east) and East Cowes (12 miles north). For island and remote addresses, a little more planning is needed.
Local landmarks in St Lawrence
We work in homes and buildings around St Catherine's School, among other places. St Lawrence’s nearest station is Shanklin station, about 4.1 miles north-east. A little further out are Arthur Webster Memorial Hospital for Children (4.1 miles north-east) and Longshoremans Museum (1.3 miles east). Not far away are Stenbury Down.
What we are called out for in St Lawrence
Using the wrong product is a common cause: acrylic caulk in a wet area, a general-purpose sealant on a moving joint, or an acetoxy silicone on natural stone or some metals. Each fails in its own way.
The most common problems we see are:
- Mould trapped under a layer of silicone
- Over-sealed joints coming away
- Leaks that keep coming back after resealing
- Sealant peeling off a dusty or damp surface
For site and facilities teams at buildings such as St Francis Catholic and Church of England Primary Academy, 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 to look for in a quote
- Whether they’re fully insured
- What product goes in the joint
- Who does the work, and how experienced they are
- How the joint is cleaned and prepared
Common questions in St Lawrence
Can you help a landlord with a rental near Shanklin station?
Yes. We work for landlords and agents as well as homeowners, and several properties can go on one quote. You can phone 0345 464 0079 or email us with the details for a clear quote.
Do you work for hotels and guest houses in St Lawrence?
Yes, hotels and guest houses are among the places we work. A room-by-room programme keeps most rooms in use while the work goes on.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can you remove old sealant without damaging the bath?
Yes. Careful removal is most of a remedial job, particularly on softer surfaces like acrylic.
What should I tell you?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply call 0345 464 0079 or drop us an email.
Do the sealants smell?
That depends on the sealant. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Where is Mr Mastic based?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
Do you come to St Lawrence?
We do. Our applicators work in St Lawrence, and the service is the same as everywhere else.
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Look for stains below bathrooms now and then
- Clean sealant with mild products only
- Don’t wait for a small gap to become a leak
- Run the fan after every shower
Don’t let anyone seal over it later. New silicone doesn’t bond to old, 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.