Hampshire · England
Remedial Sealant in Alverstoke
Remedial sealant in Alverstoke from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Smears and lumps from a botched reseal
- Beads that never stuck properly
- Leaks that keep coming back after resealing
How we handle remedial sealant in Alverstoke
Two decades of sealant work means we recognise most failures quickly. We are ARBOMaster approved and fully insured, and remedial work carries our one-year guarantee. If you have black mould underneath the bead and over-sealed joints coming away, we can help, on failed movement joints, expansion joints and shrunken worktop sealant alike.
Homes around Alverstoke are mostly houses and cottages rather than flats. Sealant and grout wear out here just as they do anywhere: old material cut out, joints cleaned and a fresh finish laid.
All of our work is guaranteed for twelve months.
- Where
- Alverstoke (PO12)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Bathrooms and kitchens in Alverstoke
Alverstoke 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. Alverstoke has hotels and guest accommodation nearby. As well as homes, we work in hotel bathrooms, where resealing and regrouting can be done room by room.
Managing a site like Alverstoke Community Infant School? Then its toilets, changing areas and kitchens need their sealant renewed like any other building’s. Rented homes near Portsmouth Harbour station change hands often, and a joint that keeps failing is best fixed properly while the property is empty.
Alverstoke is about 2 miles south of Gosport, in Hampshire. Homes, rented property, offices and hotels in Alverstoke is covered for remedial sealant. The work is guaranteed for a year. Alverstoke is one of 683 places in Hampshire where we work.
Every address in PO12 is covered for remedial sealant. Local streets include The Lane, Fort Road and Church Road, all of which we cover. We also cover the places around Alverstoke: Clayhall (1 mile east), Haslar (1 mile east), Privett (1 mile north-west), Portsmouth Point (2 miles north-east) and Portsea (2 miles north-east). Within a short drive, we also cover Havant (9 miles north-east), Fareham (5 miles north), Horndean (11 miles north-east), Hedge End (12 miles north-west), Waterlooville (9 miles north-east) and Purbrook (8 miles north-east).
Around Alverstoke
Around Alverstoke, our work takes us to homes and buildings near Bay House School and Village Home pub. Alverstoke’s nearest station is Portsmouth Harbour station, roughly 2.1 miles north-east. A little further out are Tricorn Centre (3 miles north-east) and Gosport War Memorial Hospital (0.9 miles north). Open spaces near Alverstoke include West of the River Alver.
When to call us in Alverstoke
Products get mixed up: 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 one of these:
- Gaps opening along the back of the worktop
- Smears and lumps from a botched reseal
- Caulk or the wrong sealant used in a wet area
- Movement joints that have split or pulled away
In the older streets around The Little Church, timber floors under older bathrooms flex, so joints need a sealant that moves with them.
What to look for in a quote
- When the joint can take water or movement
- How hidden problems are handled
- Are they insured?
- Whether you can choose the colour
Landlord and commercial work in Alverstoke
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will give you a quote.
What we can’t put right
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant will not 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
- Tiles that have come away from the wall
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Botched or over-sealed joints
- Failed movement joints
- Expansion joints
- Shrunken worktop sealant
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
What else we do in Alverstoke
Your questions about remedial sealant in Alverstoke
Will you come out to Alverstoke?
Yes. Alverstoke is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you help a landlord with a rental near Portsmouth Harbour station?
Yes. We work for landlords and agents as well as homeowners. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Can you remove sealant that is been put over old sealant?
Yes. We cut out all the layers and clean off the film, before resealing with a single bead.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
What sealant do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We’ll tell you what we are using and why.
Can you do several jobs on one visit?
Of course. Doing several areas at once is usually more efficient.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Alverstoke and the rest of Hampshire.
Why act early in Alverstoke
A failed seal rarely means a new bathroom. If the bath, tray and tiles are sound, remedial resealing normally puts it right. Where something else has failed, you will hear it from us. Around Alverstoke, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Doing several joints on one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear quote for the lot.
What you get with us
- Tidy, careful work
- 4.9 on Google from 180+ five-star reviews
- Colour agreed with you before we start
- A choice of colours where the product allows
Take a look at our cost guide or what customers say.
DIY sealant or a professional job?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Different surfaces, different methods
Worktops & kitchens
Kitchen joints often have grease and cleaning residue deep in them, so we spend extra time cleaning before resealing.
Movement & expansion joints
Bonding on three sides is a common reason movement joints tear. Backing rod or bond-breaker tape prevents it, letting the sealant flex between the two faces.
What we do, step by step
We keep the work tidy and contained to the area we’re working on, so you can carry on as normal. Expect the work to take a few hours for a typical bath or shower, longer where several layers have been applied. Somewhere as small as Alverstoke, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we find out how and where the joint has failed.
- We strip the joint completely, removing any layers below.
- Next, any mould is treated and the joint dried.
- We use the right backing and sealant for any joint that moves.
- Finally we finish the joint and talk you through what we found.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Keep pets and children clear of the area while we work
- Mention any sign-in or site rules at work premises
Getting a quote
If you’re in Alverstoke 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 you’ll get a clear quote before work begins.