West Berkshire · England
Remedial Sealant in Thatcham
Removing failed, mouldy or leaking sealant and putting it right for homeowners, landlords and businesses in Thatcham. Fully insured, ARBOMaster approved and guaranteed for a year.
- Leaks that keep coming back after resealing
- Decorators’ caulk around a bath or shower
- Mould trapped under a layer of silicone
For landlords and businesses
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will quote.
Remedial sealant in Thatcham, done properly
A joint that keeps failing usually has a reason. Movement, the wrong product or a leak from somewhere else will beat any new bead. We look for the cause before we reseal. If you’re dealing with floor or wall movement joints that have failed and a second bead peeling off the first, we can help.
Plenty of homes in a town like Thatcham have had new bathrooms and kitchens over the years, some more than once. A common problem is new sealant laid over old, which never bonds properly, which is why all the old material has to come out first.
Each job carries a 12-month guarantee, large or small.
- Place
- Thatcham (RG19, RG18)
- Wider area
- West Berkshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Bathrooms and kitchens in Thatcham
Most of the South East has hard water, which leaves limescale on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
If you live in an older home near United Reformed Church, older homes can move a little, which is hard on rigid grout and tired sealant. If you let a flat or house near Thatcham station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
Thatcham is about 12 miles north-west of Basingstoke, in West Berkshire. If you need remedial sealant in Thatcham, please call 0345 464 0079 or send us an email for a quick quote. We cover West Berkshire from our Crawley base, Thatcham included. Across West Berkshire, we cover 155 places, Thatcham among them. Our Reading page covers work nearby (13 miles or so).
Work in RG19 and RG18 is quoted and booked the same way as anywhere else. Remedial sealant is available to properties on High Street, Station Road and Flagstaff Square. Being close to the A4, Thatcham is easy for our applicators to reach. We also cover Benham Hill (1 mile west), Ashmore Green (2 miles north-west), Cold Ash (2 miles north), Upper Bucklebury (2 miles north-east) and Stone Copse (2 miles north-west). Within a short drive, we also cover Newbury (3 miles west), Burghfield Common (8 miles east), Speenhamland (3 miles west), Hungerford (11 miles west), Spencers Wood (12 miles east) and Calcot (9 miles east). Thatcham is among the bigger towns we cover in West Berkshire.
Landmarks near Thatcham
Typical jobs here are in homes near Kennet School and The Old Chequers Public House and the streets around them. The nearest railway station is Thatcham station, roughly 0.9 miles south-east. Other landmarks nearby include Old Chapel Textile Centre (2.2 miles south-west) and West Berkshire Community Hospital (1.5 miles west). For a walk, there’s Nature Discovery Centre.
How the job changes by surface
Windows & doors
A frame that keeps leaking may not be the mastic. We check the joint and tell you if it looks to be something else.
Leaking trays & enclosures
A cracked tray, failed valve or leaking waste needs a different fix. We will tell you what we find.
Your questions about remedial sealant in Thatcham
Do you cover Thatcham for remedial sealant?
Yes. Our work covers London and the South East, and Thatcham is part of that. You can call 0345 464 0079 or email us and tell us what needs doing.
I let a flat near Thatcham station. Can you help?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Someone sealed over the old bead. Can you fix it?
Yes. Each layer is cut out and the residue cleaned off, before resealing with a single bead.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
What happens if the problem is the tray or the plumbing?
In that case, we tell you what we have found. You may need a plumber or bathroom fitter before any new sealant goes on.
Where is Mr Mastic based?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Do you guarantee remedial jobs?
Yes, for 12 months. Where we’ve flagged another fault, it needs fixing for the joint to last.
Are you insured?
Yes, we are fully insured.
When something else is needed
In fairness, there are a few things sealant won’t fix:
- Plumbing leaks behind walls or under trays
- Water damage behind tiles that needs a tiler
- A tray or bath that is cracked
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.
Joints and surfaces we work on
- Leaking tray & enclosure joints
- Expansion joints
- Botched or over-sealed joints
- Mouldy bath & shower sealant
- Failed movement joints
- Shrunken worktop sealant
Towns and villages near Thatcham
More services for Thatcham
Why deal with it now?
DIY removal often leaves scratches and a film of residue, and any film left behind stops new sealant sticking. Careful stripping is where most of our time goes. Around Thatcham, failed sealant lets water into hidden places, like the floor under a bath, the back of a panel or the inside of a wall. Whatever the joint, failed sealant only gets worse.
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
Why Thatcham clients choose us
- 180+ five-star Google reviews
- Neat joints and a tidy finish
- Anti-fungal sanitary silicone in wet areas
- We agree the colour with you first
Take a look at what affects the cost or what customers say.
What affects the cost of remedial sealant
We quote each job individually. These are the things that affect it:
- Whether the work is at height
- Whether there’s mould to deal with
- The type of sealant required
- How many rooms, windows or areas are involved
Combining jobs into one visit usually makes better use of the time than several visits. You’ll get one clear quote for the whole job.
What we need to know
Photos by email are helpful but not essential. Try to tell us:
- How we’d reach the joints
- What the problem is, such as mould, gaps, leaks or cracking
- Where the job is, and your postcode
- Photos by email, if that is easy
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.
Common problems we fix in Thatcham
Silicone only bonds to surfaces that are clean and dry. Soap film, dust, damp or old residue stop it gripping, and the joint starts to come away early.
People generally contact us after spotting something like this:
- Sealant that came away because the surface wasn’t prepared
- Kitchen joints letting water behind the worktop
- Movement joints that have split or pulled away
- Thick, messy sealant smeared over tiles
Managing a site like Spurcroft Primary School? Then we reseal washrooms and kitchens in schools and businesses as well as homes.
What your quote should include
- What preparation is included
- What the cure time is
- What insurance they hold
- Which colour the sealant will be
What we do, step by step
The work is kept neat and contained to the area we are working on, so you can get on with your day. The job generally takes a few hours for most joints, depending on how much old sealant has to come out. A visit in Thatcham needs access to the work and a place to park close by. For outside work, let us know about side access, gates and any upper-floor joints.
- We protect the surfaces around the joint.
- Every layer of failed sealant is stripped out.
- We clean and degrease the joint and look for signs of movement or water.
- New sealant goes in once the joint is dry, and is tooled smooth.
- You get the cure time and our view on why the joint failed.
Getting ready for the visit
- Clear the area around the work
- For business premises, tell us about site rules or sign-in
- Mention any parking rules near the property
Ask for a quote
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or drop us an email.