Hampshire · England
Remedial sealant & repairs in Waterlooville, Hampshire
Our applicators work in Waterlooville on removing failed, mouldy or leaking sealant and putting it right. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Repeat leaks from the same joint
- Dark patches showing through the sealant
- Sealant peeling off a dusty or damp surface
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
About our remedial sealant in Waterlooville
Water on the floor does not always mean failed silicone. 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. We work on failed movement joints, shrunken worktop sealant and expansion joints, and people most often call us about thick, messy sealant smeared over tiles and a shower that leaks however often it’s resealed.
Around Waterlooville, it’s mostly busy family bathrooms and kitchens, where sealant and grout take a lot of daily wear. The usual signs are mould in the bead, gaps by the sink and grout that’s cracked or stained.
Whatever the size of the job, you get the same one-year guarantee in Waterlooville and across Hampshire.
- Location
- Waterlooville (PO7, PO8)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Waterlooville
Also in Waterlooville
Quotes for remedial sealant in Waterlooville
The quote reflects the job in front of us. We look at:
- When we can work, for business premises
- Mould in or behind the old joints
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
- Any access issues, like height or stairs
- Where the job is, and your postcode
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 will give you a clear price before any work starts.
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Run the fan after every shower
- Don’t wait for a small gap to become a leak
- Check ceilings under showers for marks
- Keep movement joints clear of mortar and paint
Where we’ve pointed out another fault, have it put right, because the new sealant cannot hold back a problem underneath.
Mould under a second layer of sealant keeps growing out of sight. By the time it shows through, the joint is well past saving.
What the job involves on each surface
Mouldy bath & shower sealant
Mould that has grown into silicone does not clean out for good. The sealant is cut out completely, the joint treated with a mould remover and dried ahead of a new anti-fungal bead.
Movement & expansion joints
Some movement joints have been filled with mortar or grout. We rake that out where it can be removed and seal with a flexible product.
For landlords and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can be quoted together.
Letting agents and landlords in Waterlooville can book us as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
Waterlooville: your questions answered
Can you help a landlord with a rental near Bedhampton station?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear quote.
Do you cover Waterlooville for remedial sealant?
Yes, Waterlooville is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and let us know what needs doing.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint before we leave.
Can you work on commercial sites?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures.
Do you offer different sealant colours?
We help you choose a colour that suits, from white and clear to greys and other shades. The product needed can limit the range.
Should I try DIY first?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Can you take off two layers of silicone?
Yes. It’s slower than a standard reseal, because every layer has to come out cleanly, but it’s what makes the new bead last.
The process
Every visit runs the same way: we check the joints, protect the area around them, do the work and tidy away. It normally takes a few hours for a typical bath or shower, longer where several layers have been applied. Parking in a town like Waterlooville is generally straightforward, but tell us if there’s a driveway or any restrictions, and let us know if the work is upstairs, in a flat or up high outside.
- We look at how the sealant has failed and check for movement or a leak path.
- Every layer of old sealant is cut and cleaned out.
- Next, any mould is treated and the joint dried.
- Moving joints get backing and a flexible sealant to suit.
- The new joint is tooled neatly and we explain anything else we found.
How to prepare
- Tell us about any water getting in
- Mention any sign-in or site rules at work premises
- Tell us about any previous sealing or DIY attempts
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you’re ready, phone 0345 464 0079 or send us an email.
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Why it’s worth doing now in Waterlooville
DIY removal often leaves scratches and a film of residue, and any film left behind stops new sealant sticking. Careful removal is most of a remedial job. Gaps in sealant and mould in the bead never get better on their own, and in a busy home in Waterlooville they get worse with every use. Now is the easy time to put it right.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Why choose Mr Mastic in Waterlooville
- Approved under the ARBOMaster scheme
- Trusted Arbo and Everbuild sealants
- Sanitary silicone with an anti-fungal additive in wet areas
- 180+ five-star Google reviews
What remedial sealant looks like in Waterlooville
Waterlooville is within about 3 miles 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, which leaves limescale on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
Homes close to Saint George's include some older properties, and older homes can move a little, which is hard on rigid grout and tired sealant. Letting a property close to Bedhampton station? Then failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak. Managing a site like Hart Plain Junior School? Then its toilets, changing areas and kitchens need their sealant renewed like any other building’s.
Waterlooville is about 6 miles north of Portsmouth, in Hampshire. We carry out remedial sealant for homeowners, landlords and businesses in Waterlooville and the surrounding area, as part of our work across Hampshire. Across Hampshire, we cover 683 places, Waterlooville among them. There’s also a page for Portsmouth, about 6 miles away.
Every address in PO7 and PO8 is covered for remedial sealant. If you need remedial sealant at a property on London Road, Chillingham Square and Aysgarth Road or anywhere close by, we can help. Other places close to Waterlooville include Hart Plain (1 mile north), Purbrook (1 mile south), Cowplain (1 mile north), Soake (1 mile north-west) and Purbrook Heath (1 mile south-west). Within a short drive, we also cover Gosport (8 miles south-west), Eastleigh (15 miles north-west), Fareham (7 miles west), Hedge End (12 miles west), Petersfield (9 miles north-east) and Locks Heath (10 miles west).
Landmarks near Waterlooville
We work in homes and buildings around Cowplain Community School and The Denmead Queen pub. The closest station to Waterlooville is Bedhampton station, roughly 2.6 miles south-east of the centre. Nearby you’ll also find Queen Alexandra Hospital (2.7 miles south-west) and Havant Museum (3.3 miles south-east). Not far away are Portsdown Hill and Southmoor Nature Reserve.