Portsmouth · England
Remedial Sealant in Copnor
Removing failed, mouldy or leaking sealant and putting it right for Copnor, backed by a 12-month guarantee. Call for a quick quote.
- Caulk or the wrong sealant used in a wet area
- A shower that leaks however often it’s resealed
- Sealant that came away because the surface wasn’t prepared
Copnor: your questions answered
Do you cover smaller places like Copnor?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you work in hotels near Copnor?
Yes, we work for hotels as well as homes and businesses. Rooms can be done a few at a time, so the building stays open.
Can failed expansion joints be resealed?
Yes. The depth is set with backing so the sealant only bonds to the two sides.
Do I have to be there?
Access is agreed with you when the job is booked. Indoors, that usually means someone at home.
How long does remedial resealing take?
A little longer than a standard reseal. For most joints, it’s a few hours.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Remedial sealant in Copnor, done properly
Remedial work is what we do when sealant has failed or been done badly. Silicone laid over silicone, smears across tiles, the wrong product in a moving joint or mould trapped underneath all have to come out before the joint can be done properly. Typical jobs include sealant peeling off a dusty or damp surface and black mould underneath the bead, on leaking tray & enclosure joints, mouldy bath & shower sealant and shrunken worktop sealant.
Homes around Copnor range from older cottages to more recent houses. Older homes can move a little with the seasons, which is hard on tired sealant and rigid grout.
Big or small, you get the same 12-month guarantee in Copnor and across Portsmouth.
- Place
- Copnor (PO3, PO2, PO1)
- Region
- Portsmouth
- Cover
- A year, on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Signs you need remedial sealant in Copnor
Some joints fail because water is reaching them from behind. A leaking valve, a failed waste or cracked grout feeds water behind the bead, so the silicone goes mouldy or lets go.
Signs it’s time to call us include:
- Torn expansion joints
- Thick, messy sealant smeared over tiles
- Kitchen joints letting water behind the worktop
- Sealant applied over old sealant that has lifted
Homes close to Church of St Alban include some older properties, and bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
Before booking anyone
- Whether the sealant suits the joint
- Are they insured?
- How long to leave it before use
- Whether you can choose the colour
Other services in Copnor
What we can’t put right
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
- A leaking trap, valve or supply pipe
- Cracks in the fitting rather than the joint
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think.
Where we work in Copnor
- Failed movement joints
- Mouldy bath & shower sealant
- Expansion joints
- Botched or over-sealed joints
- Leaking tray & enclosure joints
- Shrunken worktop sealant
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Always have old sealant cut out, not covered
- Keep an eye on the ceiling below the bathroom
- Ask why a joint failed before redoing it
- Keep movement joints clear of mortar and paint
Go easy on the new sealant: a mild cleaner and a soft cloth, with no blades or scourers.
If a joint has failed more than once, stop resealing it. Have someone find out why, or the next bead will go the same way.
Different surfaces, different methods
Over-sealed & botched joints
A botched joint can hide two or three layers of sealant, including the smears and film on surrounding tiles. New sealant needs a fully clean surface.
Windows & doors
Some leaks around windows come from the wall or the window itself. We check the joint and tell you if it looks to be something else.
Bathrooms and kitchens in Copnor
Copnor is close to 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.
If you look after a building such as Westover Primary School, its toilets, changing areas and kitchens need their sealant renewed like any other building’s. Rented homes near Fratton station change hands often, and a joint that keeps failing is best fixed properly while the property is empty.
Copnor is about 1 mile east of Portsmouth, in Portsmouth. Every kind of property in Copnor can book us for remedial sealant, old or new, large or small. The work is guaranteed for a year. 19 places in Portsmouth are on our list.
Every address in PO3, PO2 and PO1 is within our area for remedial sealant. We cover properties on New Road, Lynn Road and Byron Road and the roads around them. Being close to the A288, Copnor is simple for us to get to for remedial sealant. We also cover the places around Copnor: Baffins (1 mile south-east), Kingston (1 mile south), Portsmouth (1 mile west), Fratton (1 mile south-west) and North End (1 mile north-west).
Near you in Copnor
Locally, jobs take us to homes and businesses close to The Jolly Taxpayer pub, Alexandra Park and St Edmund's Catholic School and the streets around them. The closest station to Copnor is Fratton station, about 1.1 miles south-west. A little further out are The Bridge Shopping Centre (1.1 miles south-west) and St Mary's Hospital (0.7 miles south). Not far away are Milton Locks and Portsdown Hill.
Should I try it myself first?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
How we quote for remedial sealant
Your quote is based on your job. We take into account:
- When we can work, for business premises
- The type of sealant required
- The number of rooms or windows
- Access and height
The cost depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before work begins, so you know where you stand.
Helping us quote
What to tell us when you ask for a quote:
- The type of property
- The address or postcode of the job
- How many joints, rooms or windows are involved
- Whether it has been sealed before
For remedial sealant in Copnor, ring 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before we start.
What happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a typical bath or shower, longer where several layers have been applied. Parking around Copnor is generally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- 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.
- We finish neatly and point out anything that needs another trade.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us if parking is tricky
- Plan for the work area to be out of bounds to pets and children
How to get a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we’ll explain what’s involved before giving you a price.