Oxfordshire · England
Remedial sealant & repairs in Wantage, Oxfordshire
Removing failed, mouldy or leaking sealant and putting it right in Wantage, with a 12-month guarantee on every job. Ask us for a quote.
- Wide, uneven beads that look worse than the old ones
- Beads that never stuck properly
- Sealant applied over old sealant that has lifted
Leave it or put it right?
It’s easy to scratch acrylic, enamel or an uPVC frame cutting out old sealant, and the residue left behind stops the next bead bonding. Careful stripping is where most of our time goes. Black mould and gaps in sealant do not fix themselves, and in a busy home in Wantage they get worse with every use. Now is the easy time to put it right.
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first.
Why choose Mr Mastic in Wantage
- ARBOMaster approved applicator
- One-year guarantee on every job
- You choose the colour before work begins
- Neat joints and a tidy finish
Take a look at our cost guide or our reviews.
Remedial sealant for homes and businesses in Wantage
Decorators’ caulk in a shower, bathroom silicone on a window, a rigid filler in a movement joint will not last, however tidy it looks. We take it out and use a sealant made for that joint. We work on leaking tray & enclosure joints, mouldy bath & shower sealant and failed movement joints, and the jobs we see most are black mould underneath the bead and thick, messy sealant smeared over tiles.
Most bathrooms in a town like Wantage are in family homes, used every day, 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.
You are covered for a year from the day we finish. If there’s a problem with it, please call 0345 464 0079 or send us an email.
- Location
- Wantage (OX12)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
FAQs for Wantage
Is Wantage in your area for remedial sealant?
Yes. We work across London and the South East, and Wantage is part of that. You can call 0345 464 0079 or email us and tell us what needs doing, and we will send you a clear quote.
Do you work for hotels and guest houses in Wantage?
Yes, hospitality work, including hotels, is part of what we do. Work can be planned room by room, and out-of-hours working can be arranged.
Does remedial work come with a guarantee?
Yes, with our 12-month guarantee. Where we have flagged another fault, it needs fixing for the joint to last.
Where do you work from?
Our base is Crawley. Our area covers South East England, London and Scotland.
Can I choose the sealant colour?
Most of the time, yes. We will explain which colours are available.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
How much does remedial sealant cost in Wantage?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before work begins.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours for a typical bath or shower, longer where several layers have been applied and we leave things clean and tidy. In Wantage, parking is rarely complicated, though it helps to know about driveways or restrictions, and let us know if the work is upstairs, in a flat or up high outside.
- Surrounding tiles, trays and frames are protected first.
- The botched or failed sealant is cut away completely.
- We clean and degrease the joint and look for signs of movement or water.
- Once dry, a suitable sealant is applied and tooled.
- You get the cure time and our view on why the joint failed.
How to prepare
- Tell us about any water getting in
- Tell us about any previous sealing or DIY attempts
- Clear the area around the work
Getting a quote
Need a quote? Please phone 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Read more
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Never seal over old silicone
- Do not wait for a small gap to become a leak
- Never fill a movement joint with mortar or grout
- Air the bathroom so the sealant can dry
Where we’ve pointed out another fault, have it put right, because the new sealant can’t hold back a problem underneath.
Signs to act on: peeling layers, mould showing through the bead, leaks after showering or cracks in a movement joint. Each one is worth getting looked at.
Towns and villages near Wantage
What else we do in Wantage
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Landlords, agents and businesses in Wantage
We also work for property managers and facilities teams. Several sites can go on one quote.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
What sealant work cannot fix
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- A bath, tray or worktop that moves until it’s properly fixed
- A cracked shower tray or bath (that needs repair or replacing)
- Water damage behind tiles that needs a tiler
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
Where we work in Wantage
- Mouldy bath & shower sealant
- Shrunken worktop sealant
- Failed movement joints
- Botched or over-sealed joints
- Expansion joints
- Leaking tray & enclosure joints
How we quote for remedial sealant
For a quick quote, just ask. The main things that affect it are:
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
- Whether the work is at height
- Working hours on commercial sites
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Asking for a quote
There’s no need for technical detail. Just tell us:
- The type of property
- If someone has resealed it before
- The rough size of the job
- Where the job is, and your postcode
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will talk you through the work.
Wantage homes and their sealant
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. Wantage has hotels and guest accommodation nearby. Hotel bathrooms are part of our work as well as homes, and can be done room by room.
For an older house near a landmark such as Church of St Peter and St Paul, walls and floors in older homes can move, and sealant and grout show it first. For site and facilities teams at buildings such as St Mary's 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.
Wantage is about 8 miles west of Didcot, in Oxfordshire. Jobs in Wantage get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Wantage is one of 443 towns and villages in Oxfordshire where we work for remedial sealant. We also work in Oxford, about 14 miles from Wantage.
Here we cover the OX12 postcode area for remedial sealant. Remedial sealant is available to properties on Market Place, Limborough Road and Humber Close. Being close to the A338 and A417, Wantage is simple for us to get to for remedial sealant. If you are just outside Wantage, we cover Charlton (1 mile east), East Challow (1 mile west), Letcombe Regis (2 miles south-west), West Challow (2 miles west) and Childrey (2 miles west). Larger places within reach include Oxford (14 miles north-east), Didcot (8 miles east), Abingdon-on-Thames (8 miles north-east), Witney (14 miles north), Carterton (14 miles north-west) and Faringdon (8 miles north-west). As one of the bigger places in Oxfordshire, Wantage has every kind of property, from flats to offices.
Near you in Wantage
Locally, jobs take us to homes and businesses close to King Alfred's, Betjeman Millennium Park and The Abingdon Arms and the streets around them. A little further out are Williams F1 Grand Prix Collection (1.9 miles north). For a walk, there’s Letcombe Valley and Chain Hill.