Southampton · England
Bathroom & kitchen resealing in Thornhill, Southampton
Problem with your baths, showers and worktops in Thornhill? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Water escaping at the shower enclosure
- Splits where the tray meets the wall
- Smears of silicone across the tiles
Bathroom resealing in Thornhill
Resealing is a small job that makes a big difference. Mouldy silicone makes even a new bathroom look neglected, and a clean white or clear joint fixes it quickly. It also seals the gaps that let water behind the bath. We’re often asked to deal with damp behind the bath or under the tray and leaking joints on a shower screen, across baths, shower trays & enclosures and wet rooms.
Around Thornhill, you’ll mostly find houses and bungalows, from older cottages to newer builds. Sealant and grout wear out here just as they do in a big town.
Big or small, you get the same 12-month guarantee.
- Place
- Thornhill (SO19, SO18, SO30)
- Wider area
- Southampton
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Leave it or put it right?
Sorting it now is quick: it takes a morning or an afternoon for most single baths and showers. Left until water gets through, the job can grow to lifting panels, drying out and decorating. In a smaller place like Thornhill, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
A failed joint rarely gets cheaper to fix by waiting. If you are unsure, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Why choose Mr Mastic in Thornhill
- Approved under the ARBOMaster scheme
- Any old sealant cut out fully, not covered over
- We leave the area clean and tidy
- Every job guaranteed for a year
Signs you need bathroom resealing in Thornhill
Plenty of failed sealant has been laid over the top of older sealant. Fresh silicone cannot grip the old bead underneath, so it lifts, lets water in and traps mould underneath.
If you can see any of these, it’s time to have the joints looked at:
- Failed sealant on the screen profile
- Water getting behind the bath panel
- Smears of silicone across the tiles
- Cracked, shrunken or lifting silicone
If you live in an older home near St Christopher, older homes can move a little, which is hard on rigid grout and tired sealant.
Before you book anyone
- The length of the guarantee
- What preparation is included
- Whether VAT is included
- Are they insured?
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Use gentle cleaners on the silicone
- Give the silicone its full cure time
- Look for lifting corners and small gaps now and then
- Dry worktop joints after washing up
Give the silicone time to cure before it gets wet, which is usually around 24 hours. Once it’s cured, wiping it down after use keeps it looking new.
Watch for the early signs: a corner lifting, a gap behind the bead, a dark line under the silicone or a damp patch on the ceiling below. Any of these means the joint needs attention.
Towns and villages near Thornhill
More services for Thornhill
Different surfaces, different methods
Kitchen worktops & upstands
The joint between worktop and wall takes splashes, crumbs and cleaning sprays. The new bead is colour-matched where it shows, so the line does not stand out.
Sinks & splashbacks
The edge of an inset sink is a common place for water to get under the worktop. We reseal the visible edge of the sink where it has failed.
Questions from Thornhill
Can you help a landlord with a rental near Sholing station?
Yes, we work for landlords and agents. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before we start.
Do you cover Thornhill for bathroom resealing?
Yes, Thornhill is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we will send you a clear quote.
Do you guarantee your resealing?
Yes. Our 12-month guarantee covers every job, and we are fully insured.
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 fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Will there be a smell?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Do you reseal kitchen worktops and sinks too?
Yes. Next to the sink we use a food-safe product where it’s needed.
When something else is needed
To be straight with you, there are a few things sealant will not fix:
- Cracks in the tray itself rather than the joint
- Tiles that have come away from the wall
- Water coming from the plumbing 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 Thornhill
- Sinks & splashbacks
- Baths
- Kitchen worktops & upstands
- Wet rooms
- Shower trays & enclosures
- Basins & vanity units
Bathroom resealing around Thornhill
Thornhill is within about 3 miles of 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, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
For site and facilities teams at buildings such as Thornhill Primary School, washroom and kitchen sealant there needs the same care as at home, and schools and businesses are part of our work as well as homes. Letting a property close to Sholing station? Then a reseal between tenants is a quick way to make the bathroom and kitchen look cared for.
Thornhill is about 2 miles east of Southampton, in Southampton. If you need bathroom resealing in Thornhill, please call 0345 464 0079 or send us an email for a quick quote. We’re based in Crawley and cover Southampton, Thornhill included. Thornhill is one of 40 places in Southampton where we work.
Jobs for bathroom resealing in SO19, SO18 and SO30 works the same way as everywhere else we cover. Whether your property is on Drove Road, Barry Road and Luton Road or a nearby road, our applicators can take on the job. Being close to the A334, Thornhill is easy for our applicators to reach for bathroom resealing. Close by, we work in Harefield (1 mile north), Sholing (1 mile south-west), Bitterne (1 mile west), West End (1 mile north) and Chartwell Green (1 mile north). Further out, we also cover Shirley (4 miles west), Regents Park (4 miles west), Maybush (5 miles west), Portswood (3 miles north-west), Coxford (5 miles west) and Freemantle (4 miles west). As one of the bigger places in Southampton, Thornhill has every kind of property, from flats to offices.
What’s near Thornhill
We work in homes and buildings around Westwood Woodland Park, Woodlands Community College and Grove Park Business and Enterprise College and the streets around them. For rail, the closest station is Sholing station, about 1.4 miles south-west. Other landmarks nearby include Moorgreen Hospital (1.4 miles north-east) and Bitterne Local History Society Heritage And Research Centre (1.1 miles west). For a walk, there’s Netley Common.
What happens on the day
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes a couple of hours for one bath or shower, or most of a day for a full bathroom and kitchen. A visit to Thornhill is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- Protection goes down around the bath, shower or worktop.
- Old sealant is sliced away and the residue removed.
- We treat any mould and let the joint dry properly.
- Baths are filled first, then anti-fungal sanitary silicone is applied in a colour to suit.
- We finish the joint, clear up and tell you how long to leave it before it gets wet.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Mention any parking rules near the property
- Plan for the work area to be out of bounds to pets and children
Get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you are ready, phone 0345 464 0079 or drop us an email.
Advice
DIY versus a professional finish
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. All the old material has to come out first.
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.