Oxfordshire · England
Cumnor Remedial Sealant
Remedial sealant across Cumnor and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Leaks that keep coming back after resealing
- Thick, messy sealant smeared over tiles
- Sealant applied over old sealant that has lifted
How we handle remedial sealant in Cumnor
Two decades of sealant work means we recognise most failures quickly. We’re fully insured ARBOMaster approved applicators, and remedial work carries our 12-month guarantee. If you are dealing with repeat leaks from the same joint and wide, uneven beads that look worse than the old ones, we can put it right.
Around Cumnor, it’s houses and cottages rather than flats, some with bathrooms tucked into older rooms or extensions. Sealant and grout wear out here just as they do anywhere: everything old comes out before the new sealant or grout goes in.
We stand behind the work with a 12-month guarantee.
- Location
- Cumnor (OX2)
- Wider area
- Oxfordshire
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Cumnor: your questions answered
Do you cover smaller places like Cumnor?
Yes. Cumnor is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do remedial sealant in Cumnor?
Yes. Our work covers London and the South East, and Cumnor is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job.
Can you reseal a split movement joint?
Yes. Failed movement joints are cut out and resealed with backing and a flexible sealant suited to the movement.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Can tenants book the work?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
Will there be a smell?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
How long before the joint can be used?
That depends on the sealant used, so please follow the time we give you.
What if the leak is not the sealant?
You’ll hear it from us. A cracked tray, faulty valve or leaking waste needs a different trade, and we will not reseal for the sake of it.
Places near Cumnor
Other services in Cumnor
When it isn’t the sealant
To be straight with you, some problems need a different trade:
- Tiles that have come away from the wall
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
- A cracked shower tray or bath (that needs repair or replacing)
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer.
What we seal
- Leaking tray & enclosure joints
- Botched or over-sealed joints
- Expansion joints
- Shrunken worktop sealant
- Failed movement joints
- Mouldy bath & shower sealant
Quotes for remedial sealant in Cumnor
We quote each job individually. This is what makes a difference:
- When we can work, for business premises
- The amount of work
- How many areas need sealing
- The type of sealant required
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
What we need to know
When you call or email, it’s useful to know:
- The problem you’ve noticed
- Roughly how big the job is
- Any access issues, like height or stairs
- Whether it’s a home or a business
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Check trays and worktops don’t move
- Ask why a joint failed before redoing it
- Keep movement joints clear of mortar and paint
- Keep bleach and abrasives off the bead
Go easy on the new sealant: a mild cleaner and a soft cloth, with no blades or scourers.
A split movement joint lets rain into walls and floors, and the longer it’s left, the more the joint edges break down. Resealing while the edges are sound is simpler.
Common problems we fix in Cumnor
Joint depth matters. A bead bonded on three sides, or laid too thick, can’t flex, and tears at the first real movement. Backing rod or bond-breaker tape prevents it.
Keep an eye out for these signs:
- Dark patches showing through the sealant
- Leaks that keep coming back after resealing
- Worktop sealant that has shrunk and split
- Products that weren’t meant for the joint
For an older house near a landmark such as Church of St Michael, timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Comparing quotes
- Whether all the old sealant comes out first
- Whether the sealant suits the joint
- What insurance they hold
- What guarantee comes with the work
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
For landlords and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
Housing providers, facilities teams and property managers book us too in Cumnor and across Oxfordshire. Several sites can be quoted together.
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that 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 a small place like Cumnor, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Surrounding tiles, trays and frames are protected first.
- Every layer of failed sealant is stripped out.
- 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.
Getting ready for the visit
- Mention any parking rules near the property
- Let us know about stairs, lifts or work at height
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Remedial sealant around Cumnor
Most of the South East has hard water, so limescale builds up on sealant, grout and fittings.
Letting a property close to Oxford station? Then a joint that keeps failing is best fixed properly while the property is empty. Schools such as Cumnor Church of England School (Voluntary Controlled) are buildings too, and its toilets, changing areas and kitchens need their sealant renewed like any other building’s.
Cumnor is about 4 miles north-west of Abingdon-on-Thames, in Oxfordshire. We provide remedial sealant to householders, landlords and businesses in Cumnor and the surrounding area, as part of our work across Oxfordshire. Our Oxfordshire coverage runs to 443 places, and Cumnor is one of them.
Jobs for remedial sealant in OX2 works the same way as everywhere else we cover. Remedial sealant is available to properties on High Street, The Park and The Winnyards and the roads around them. Other places close to Cumnor include Chawley (1 mile north-east), Filchampstead (1 mile north-west), Henwood (1 mile south-east), Dean Court (2 miles north-east) and Botley (2 miles north-east). We also work in nearby towns such as Oxford (5 miles east), Didcot (9 miles south-east), Bicester (14 miles north-east), Abingdon-on-Thames (4 miles south-east), Witney (8 miles north-west) and Carterton (11 miles west).
Landmarks near Cumnor
Locally, jobs take us to homes and businesses close to The Vine Inn and Matthew Arnold School and the streets around them. The closest station to Cumnor is Oxford station, about 3.1 miles north-east. A little further out are Westgate Shopping Centre (3.3 miles north-east) and Radcliffe Infirmary (3.6 miles north-east). For a walk, there’s Lashford Lane Fen and Cumnor Hill.