Hampshire · England
Remedial sealant & repairs in Havant, Hampshire
Removing failed, mouldy or leaking sealant and putting it right in Havant, with a one-year guarantee on every job. Call for a quick quote.
- Products that weren’t meant for the joint
- Dark patches showing through the sealant
- Sealant peeling off a dusty or damp surface
Remedial sealant for homes and businesses in Havant
The wrong product in the wrong joint fails however neatly it’s applied. Out it comes, and in goes a sealant suited to the job. We are often asked to deal with dark patches showing through the sealant and beads that never stuck properly, across expansion joints, shrunken worktop sealant and mouldy bath & shower sealant.
In a town like Havant, older streets sit alongside newer estates, and bathrooms range from decades-old suites to brand-new ones. Whatever their age, sealant and grout tend to go before anything else.
Each job carries a 12-month guarantee.
- Location
- Havant (PO9, PO11, PO7)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What remedial sealant looks like in Havant
Havant is close to the coast. Near the coast, holiday lets and guest houses can see bathrooms used by one guest after another, which wears sealant and grout out faster than in a quiet home. Most of the South East has hard water, which leaves limescale on sealant, grout and fittings.
Schools such as Trosnant Infant School are buildings too, and its toilets, changing areas and kitchens need their sealant renewed like any other building’s. In the older streets around St Francis, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
Havant is about 18 miles east of Southampton, in Hampshire. From the centre of Havant to the outskirts, we cover remedial sealant for every kind of property, from flats and houses to offices and hotels. Our Hampshire coverage runs to 683 places, and Havant is one of them.
Here we cover the PO9, PO11 and PO7 postcode area for remedial sealant. If you need remedial sealant at a property on Colemore Square, Market Parade and Juniper Square or a nearby road, we can help. Havant is on the A27 and A3(M), which makes it straightforward to reach. We also cover the places around Havant: Leigh Park (1 mile north), Denvilles (1 mile south-east), Durrants (2 miles north-east), Langstone (2 miles south) and Warblington (2 miles south-east). We also work in nearby towns such as Gosport (8 miles south-west), Fareham (9 miles west), Horndean (3 miles north), Hedge End (14 miles west), Petersfield (10 miles north) and Locks Heath (12 miles west). Being one of Hampshire’s larger places, Havant has every kind of property, from flats to offices.
Local landmarks in Havant
In Havant, that means homes and buildings near The Perseverance pub, St Albans Church and Havant College, among other places. The closest station to Havant is Havant station, roughly 0.6 miles south of the centre. A little further out are Havant War Memorial Hospital (0.6 miles south) and Havant Museum (0.9 miles south-east). Open spaces near Havant include Southmoor Nature Reserve.
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.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
How the visit works
When we arrive, we start by going over the job with you, so there are no surprises. Surfaces next to the work are protected before any work begins. Most jobs take a few hours for most joints, depending on how much old sealant has to come out. For a job in Havant, we need access to where the work is and somewhere nearby to park. If the job is outside, mention gates, side access and anything above ground floor.
- We protect the surfaces around the joint.
- Every layer of failed sealant is stripped out.
- The joint is degreased and checked for movement and leaks.
- Once dry, a suitable sealant is applied and tooled.
- You get the cure time and our view on why the joint failed.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Plan for the work area to be out of bounds to pets and children
- Mention any tricky access
How to get a quote
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Read more
When something else is needed
It helps to know what we can’t do:
- Older mastics that may need an asbestos check before removal
- A tray or bath that is cracked
- Movement from fittings that aren’t supported
If you are not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Where we work in Havant
- Shrunken worktop sealant
- Expansion joints
- Failed movement joints
- Mouldy bath & shower sealant
- Botched or over-sealed joints
- Leaking tray & enclosure joints
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Deal with small splits early
- Do not point over movement joints
- Keep the room well ventilated
- Always have old sealant cut out, not covered
Clean gently: a mild cleaner and a soft cloth, with no blades or scourers.
Mould trapped under over-sealed joints spreads unseen. By the time it shows through, the joint is well past saving.
Why deal with it now?
Repeat failures have a cause. Finding it, whether movement, water from elsewhere or an unsuitable product, ends the cycle. Black mould and gaps in sealant don’t fix themselves, and in a busy home in Havant they get worse with every use. Replacing the sealant now is the simplest fix.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
Why choose Mr Mastic in Havant
- Fully insured
- Sealant colour chosen to suit
- An ARBOMaster approved applicator
- Neat joints and a tidy finish
See what affects the cost and what customers say.
More services for Havant
Signs you need remedial sealant in Havant
Silicone only bonds to surfaces that are clean and dry. Residue, moisture or dust left in the joint weaken the bond, so it starts lifting sooner than it should.
Most people get in touch when they notice one of these:
- Decorators’ caulk around a bath or shower
- Wide, uneven beads that look worse than the old ones
- Sealant applied over old sealant that has lifted
- Black mould underneath the bead
Letting a property close to Havant station? Then a joint that keeps failing is best fixed properly while the property is empty.
Questions to ask before you book
- Whether they’re fully insured
- The length of the guarantee
- Which sealant they’ll use, and why
- Whether all the old sealant comes out first
Landlords, agents and businesses in Havant
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
For anyone letting property in or around Havant, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.
FAQs for Havant
Can you help a landlord with a rental near Havant station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
Can you do remedial sealant in Havant?
Yes, Havant is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear price.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
How much does remedial sealant cost in Havant?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or drop us an email and tell us what needs doing and where.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Is it worth trying it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Can old silicone be taken off without scratching the tiles?
Yes. Careful removal is most of a remedial job, particularly on softer surfaces like acrylic.
Do you offer different sealant colours?
We’ll suggest a colour to suit the surroundings. The choice depends on the product the joint needs.