Hampshire · England
Remedial sealant & repairs in Stanmore, Hampshire
Removing failed, mouldy or leaking sealant and putting it right for homeowners, landlords and businesses in Stanmore. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant peeling off a dusty or damp surface
- Repeat leaks from the same joint
- Floor or wall movement joints that have failed
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
About our remedial sealant in Stanmore
Movement and expansion joints fail when the sealant can’t stretch. We cut out the failed sealant and set the depth with backing, before resealing with a flexible product suited to the movement. Typical jobs include wide, uneven beads that look worse than the old ones and caulk or the wrong sealant used in a wet area, across expansion joints, mouldy bath & shower sealant and botched or over-sealed joints.
Around Stanmore, you will mostly find houses and bungalows, some older and some much newer. Sealant and grout wear out here just as they do in a big town.
All our work comes with a one-year guarantee, wherever you are in Hampshire.
- Location
- Stanmore (SO22, SO23)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Bathrooms and kitchens in Stanmore
Stanmore has hotels and guest accommodation nearby. Hotel bathrooms are part of our work as well as homes, and can be done room by room. Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
Managing a site like Stanmore Primary School? Then its toilets, changing areas and kitchens need their sealant renewed like any other building’s. For landlords with property near Winchester station, a joint that keeps failing is best fixed properly while the property is empty. For an older house near a landmark such as Saint Luke, walls and floors in older homes can move, and sealant and grout show it first.
Stanmore is about 1 mile south-west of Winchester, in Hampshire. Every kind of property in Stanmore can book us for remedial sealant. The work is guaranteed for a year. We cover 683 towns and villages across Hampshire, from the larger towns to small villages. Southampton is on our list too, about 10 miles from Stanmore.
Here we cover the SO22 and SO23 postcode area for remedial sealant. If you need remedial sealant at a property on Fox Lane, Kings Road and Romsey Road or a nearby road, our applicators can take on the job. Stanmore is on the A3090, so it’s easy for us to get to. Close by, we work in Badger Farm (1 mile south), St Cross (1 mile south-east), Oliver's Battery (1 mile south-west), Winchester (1 mile north-east) and Weeke (1 mile north). We also work in nearby towns such as Eastleigh (6 miles south), Fareham (15 miles south-east), Andover (13 miles north-west), Totton (12 miles south-west), Chandler's Ford (5 miles south-west) and Hedge End (10 miles south).
Local landmarks in Stanmore
Typical jobs here are in homes near White Horse Public House, Kings' School and St. Cross Park and the streets around them. The closest station to Stanmore is Winchester station, roughly 1.2 miles north-east of the centre. Nearby you will also find Winchester Castle (0.9 miles north-east) and Balfour Museum of Hampshire Red Cross History (0.5 miles north-west). For a walk, there’s Winnall Moors and Twyford Down.
Leave it or put it right?
Adding more sealant is the usual quick fix, and it rarely works. It cannot bond to what’s underneath, so the leak carries on and there’s now more to remove. In a smaller place like Stanmore, 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.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why choose Mr Mastic in Stanmore
- Full insurance on every job
- Colour picked to suit the job
- Quality sealants from Arbo and Everbuild
- We leave the area clean and tidy
Quotes for remedial sealant in Stanmore
There’s no set price list, because jobs vary so much. The quote depends on:
- The size of the job
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
- How many rooms, windows or areas are involved
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, ring 0345 464 0079 or email us for an honest opinion and a quote.
What we need to know
What to tell us when you ask for a quote:
- The address or postcode of the job
- How many joints, rooms or windows are involved
- Photos by email, if that is easy
- If it’s domestic, commercial or a hotel
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved and give you a clear quote.
Stanmore: your questions answered
Can you help a landlord with a rental near Winchester station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Do you work for hotels and guest houses in Stanmore?
Yes, hotels and guest houses are among the places we work. Rooms can be done a few at a time, so the building stays open.
What if the leak is not the sealant?
We check for that before we reseal. If we find the leak is elsewhere, we tell you before going further.
Can you match the sealant colour?
We’ll suggest a colour to suit the surroundings. The product needed can limit the range.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status.
Will it make a mess?
We keep the work tidy. We protect what’s around the joints, and the area is left clean when we finish.
Can you do several jobs on one visit?
Yes. Just list everything you need and we’ll quote it together.
Someone resealed my shower and it’s leaking again. Can you help?
Yes. We’ll take all the sealant out, look for why it failed and reseal it properly.
What we cannot put right
We won’t take on work that will not last, so here’s what sealant cannot put right:
- Sealant in an older building that needs testing for asbestos first
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- Water damage behind tiles that needs a tiler
If you are not sure, just phone 0345 464 0079 or drop us an email and we’ll give you a straight answer.
What we seal
- Failed movement joints
- Shrunken worktop sealant
- Leaking tray & enclosure joints
- Botched or over-sealed joints
- Mouldy bath & shower sealant
- Expansion joints
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will quote.
For anyone letting property in or around Stanmore, several properties can be quoted together. Send us the addresses and the work at each.
Places near Stanmore
What else we do in Stanmore
What we do, step by step
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and tidy away. It usually takes a few hours, depending on how many layers have to come out. In a smaller place like Stanmore, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- We look at how the sealant has failed and check for movement or a leak path.
- All the old sealant comes out, including any layers underneath.
- Next, any mould is treated and the joint dried.
- Where the joint moves, backing and a flexible sealant suited to the movement go in.
- Finally we finish the joint and talk you through what we found.
Getting ready for the visit
- Clear items away from the joints we’re working on
- Plan for the work area to be out of bounds to pets and children
- Tell us about any previous sealing or DIY attempts
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, phone 0345 464 0079 or email us.
Related advice
Different surfaces, different methods
Windows & doors
Wrong-coloured or messy mastic can be replaced for appearance too, in a colour that suits the frame.
Leaking trays & enclosures
A shower that leaks after resealing often has a tray that moves or an enclosure sealed on the wrong side. Both are checked before any new sealant goes on.