Hampshire · England
Window & door mastic in Overton, Hampshire
Mastic around window and door frames, sills and patio doors in Overton, with a one-year guarantee on every job. Call for a quick quote.
- White mastic on grey or black frames
- Whistling draughts around closed windows
- Black, perished sealant on frames
How we handle window mastic in Overton
The new joint does not have to be white. We can seal in white, brown, anthracite grey, black or clear, so the line suits the frame instead of standing out. We work on composite doors, patio & French doors and window sills, and people most often call us about cracked internal joints between frame and plaster and rushed sealant from a window installation.
Homes around Overton range from older properties to newer houses, and their windows range just as widely. Each frame material needs the right sealant against the right wall.
You’re covered for a year from the day we finish. If there’s a problem with it, please call 0345 464 0079 or email us.
- Place
- Overton (RG25)
- Region
- Hampshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
FAQs for Overton
Is Overton in your area for window mastic?
Yes. Our work covers London and the South East, and Overton is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job.
Will you come out to Overton?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can new window sealant be painted?
Not generally, if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status.
How long will my window job take?
The work takes a morning for a couple of windows and a door. Access and the amount of old mastic make the biggest difference.
Do you work on first-floor windows?
Yes, in most cases. Access is planned before we start.
Can tenants book the work?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
How we quote for window mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How easy the joints are to reach
- How many areas need sealing
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we’ll explain what it covers.
What to tell us for a quote
When you call or email, these details help:
- Whether it has been sealed before
- Roughly how big the job is
- Where the job is, and your postcode
- The problem you’ve noticed
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
Overton homes and the weather
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Overton station? Then renewing tired window mastic between tenants heads off draught and damp complaints. Homes close to Church of St Mary include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Schools such as Overton Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Overton is about 7 miles west of Basingstoke, in Hampshire. Jobs in Overton get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 683 towns and villages across Hampshire, large and small. Reading is on our list too, around 19 miles away.
Postcode districts we cover here for window mastic: RG25. Streets in the area include High Street, Station Road and London Road, and we cover them all. Close by, we work in Southington (1 mile west), Quidhampton (1 mile north), Laverstoke (2 miles south-west), Freefolk (2 miles west) and Deane (2 miles east). Within a short drive, we also cover Basingstoke (7 miles east), Winchester (13 miles south), Andover (10 miles west), Alton (14 miles south-east), Tadley (9 miles north-east) and Hook (14 miles east).
Near you in Overton
Typical jobs here are in homes near The Greyhound pub and the streets around them. For rail, the closest station is Overton station, about 0.8 miles north.
How the visit works
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes most of a day for a typical house, less for a few frames, including the tidy-up. For a job in Overton, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
How to prepare
- Mention any parking rules near the property
- Let us know if you’ve seen damp or leaks
- Mention any sign-in or site rules at work premises
Ask for a quote
Want a quote for window mastic? Please ring 0345 464 0079 or email us 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
Why it’s worth doing now in Overton
The work is quick compared with the damage it prevents: it takes a morning for a couple of windows and a door. Wait for damp to appear and there may be plaster and decorating to sort out too. In a smaller place like Overton, 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 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.
Why book with us
- Colour picked to suit the job
- White, clear, grey or coloured to suit, where the product allows
- We leave the area clean and tidy
- 180+ five-star Google reviews
See what affects the cost and customer reviews.
Places near Overton
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Looking after it afterwards
So the new joints stay in good condition:
- Keep solvents and bleach off the sealant
- Keep paint off silicone joints
- Walk round the house once a year and look at the joints
- Avoid blasting the frames with a pressure washer
Timber frames need their paint kept up, since wood that gets wet swells and shrinks more. Paint up to the joint, not over the silicone.
Leaks generally show up in wet, windy weather, but sealant goes on best when frames and walls are dry. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Landlord and commercial work in Overton
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Soft or decayed wood in the frame
- Broken hinges, locks or handles
- A failed sealed unit that has misted up
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
Surfaces we seal
- Window sills
- uPVC windows
- Timber windows & doors
- Composite doors
- Aluminium frames
- Patio & French doors