Hampshire · England
Knowle Remedial Sealant
Remedial sealant for Knowle, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Decorators’ caulk around a bath or shower
- A second bead peeling off the first
- Leaks that keep coming back after resealing
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
How we handle remedial sealant in Knowle
If a joint has been resealed and is leaking again, it’s worth a proper look. Send pictures when you ring 0345 464 0079 or email us, and say how long ago it was last done. Common call-outs are for a shower that leaks however often it’s resealed and wide, uneven beads that look worse than the old ones, on expansion joints, botched or over-sealed joints and leaking tray & enclosure joints.
In a village or hamlet like Knowle, homes are often older cottages and farmhouses alongside a few newer houses. Older walls and timber floors can move a little, and cracked grout and split sealant are often the first signs.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Knowle (PO17)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Knowle questions
Can you help a landlord with a rental near Fareham station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Can you do remedial sealant in Knowle?
Yes. We work across London and the South East, and Knowle is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.
Someone resealed my shower and it’s leaking again. Can you help?
Yes. All the sealant comes out, we find out why it failed, and the joint is resealed properly.
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.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We will give you the cure time for the product we used.
Honest limits
We will not take on work that will not last, so these are the limits:
- Plumbing leaks behind walls or under trays
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
- Movement from fittings that are not supported
If you’re not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Joints and surfaces we work on
- Botched or over-sealed joints
- Expansion joints
- Failed movement joints
- Shrunken worktop sealant
- Mouldy bath & shower sealant
- Leaking tray & enclosure joints
Knowle homes and their sealant
Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings.
If you live in an older home near Church of St Francis, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant. Managing a site like Orchard Lea Infant School? Then we reseal washrooms and kitchens in schools and businesses as well as homes.
Knowle is about 2 miles north of Fareham, in Hampshire. Every kind of property in Knowle can book us for remedial sealant, old or new, large or small. Every job comes with our one-year guarantee. Across Hampshire, we cover 683 places, Knowle among them. Our Portsmouth page covers work nearby.
All of PO17 is within our area for remedial sealant, from the main roads to the quietest streets. Streets in the area include Serotine Close, Boundary Walk and Park Approach, all of which we cover. Close by, we work in Funtley (1 mile south), Tapnage (1 mile north-west), Heathfield (2 miles south), Segensworth (2 miles west) and Titchfield Park (2 miles south-west). Larger places within reach include Winchester (13 miles north), Gosport (6 miles south-east), Havant (10 miles east), Eastleigh (9 miles north-west), Horndean (9 miles east) and Totton (13 miles west).
What’s near Knowle
Around Knowle, our work takes us to homes and buildings near The Miners Arms and The Henry Cort Community College, among other places. The closest station to Knowle is Fareham station, about 2 miles south of the centre. Well-known places in the area include Portchester Castle (4.9 miles south-east) and Knowle Hospital (less than half a mile north-east). Green spaces nearby include Portsdown Hill and Swanwick Lakes.
Towns and villages near Knowle
More services for Knowle
Signs you need remedial sealant in Knowle
Movement tears sealant that is not designed for it. Flexing baths, rocking trays and building movement joints split any bead that’s too stiff or too thin.
Any of these means the joints need attention:
- Products that weren’t meant for the joint
- Dark patches showing through the sealant
- Worktop sealant that has shrunk and split
- Leaks that keep coming back after resealing
Rented homes near Fareham station change hands often, and botched sealant from a previous quick fix is easier to strip out between tenants.
Questions to ask before you book
- How the surfaces are prepared before sealing
- When the joint can take water or movement
- Are they insured?
- How the colour is chosen
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Ask why a joint failed before redoing it
- Have loose fittings fixed before resealing
- Air the bathroom so the sealant can dry
- Don’t point over movement joints
Ventilation keeps mould away from the new bead: run the fan during and after showers, or open a window.
A failing joint rarely gets better on its own. Each use pushes more water behind the bead, into whatever is behind or below. Early action keeps it to a sealant job.
Why deal with it now?
A failed seal rarely means a new bathroom. When the fittings are sound, stripping and resealing the joints is often enough. Where something else has failed, you’ll hear it from us. Older cottages and farmhouses around Knowle can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we will go through it with you.
Why us?
- Anti-fungal sanitary silicone in wet areas
- A sealant colour to suit the surroundings
- Fully insured
- You choose the colour before work begins
See what affects the cost and what customers say.
The process
On the day, we look over the joints with you first. We protect the surfaces around the joints before work begins. Most jobs take a few hours for most joints, depending on how much old sealant has to come out. In a small place like Knowle, access is usually 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.
- Old beads and residue are removed down to clean surfaces.
- We treat any mould and dry the joint thoroughly.
- We reseal with a product suited to the joint, backed where needed.
- The joint is tooled and you are told about anything else we found.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Tell us about any water getting in
- Tell us about any previous sealing or DIY attempts
How to get a quote
Want a quote for remedial sealant? Please call 0345 464 0079 or email us with a few details. You will know what we plan to do, and what it will cost, before any work begins.
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Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.