West Berkshire · England
Window Mastic in Brightwalton
Window mastic for Brightwalton and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Draughty joints inside around the window
- Old mastic that has gone black or come away
- Gaps left after new windows were fitted
The process
There is not much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes a morning for a couple of windows and a door, including the tidy-up. Somewhere as small as Brightwalton, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check each frame and agree which ones need doing.
- We remove the old mastic and clean the frame and the wall.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Every joint is checked before we leave.
Getting ready for the visit
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any sign-in or site rules at work premises
Ask for a quote
Asking for a quote is easy: let us know what needs doing and where. Photos by email help us understand the job, and we’ll take it from there.
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How we handle window mastic in Brightwalton
Behind a thin line of old mastic there’s sometimes a deep void. Filling it with sealant alone leaves a joint that cannot move properly, so we fit backing rod to set the right depth. That way the new bead bonds to the frame and the wall only. Typical jobs include gaps where the sill meets the wall and gaps between the frame and the inside reveal, across timber windows & doors, aluminium frames and composite doors.
Around Brightwalton, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
Each job carries a 12-month guarantee.
- Place
- Brightwalton (RG20)
- Wider area
- West Berkshire
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Brightwalton: your questions answered
Do you cover smaller places like Brightwalton?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do window mastic in Brightwalton?
Yes, Brightwalton is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll send you a clear quote.
Where do you work from?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
I’m a tenant. Can you help?
We’re happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.
Does someone need to be in?
It depends on the job. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
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 long before the joint can be used?
It depends on the product and the temperature. We tell you how long to leave it before we go.
What does window mastic cost?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or send us an email with a short description of the job.
Brightwalton homes and the weather
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near Church of All Saints, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Brightwalton is about 6 miles south of Wantage, in West Berkshire. Wherever you are in the RG20 postcode area, we cover window mastic for homes and businesses. Our West Berkshire coverage runs to 155 places, Brightwalton among them. Our Reading page covers work nearby, about 18 miles away.
Work in RG20 is quoted and booked the same way as anywhere else. You will find streets such as Dunmore Meadow and Saxons Acre, and we cover them all. Neighbouring places we cover for window mastic include Brightwalton Green (1 mile south), Catmore (2 miles east), Farnborough (2 miles north), Stanmore (3 miles east) and West Ilsley (4 miles north-east). Within a short drive, we also cover Newbury (8 miles south), Thatcham (9 miles south-east), Speenhamland (8 miles south), Hungerford (9 miles south-west), Calcot (15 miles east) and Lambourn (6 miles west).
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll give you a quote.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Different surfaces, different methods
Window sills
Every drop off the glass ends up on the sill, so the joints at each end and underneath matter. They’re cut out and resealed with exterior sealant.
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. Each is cleaned, backed where deep and resealed.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Leave it or put it right?
Resealing frames is a short job: it takes most of a day for a typical house, less for a few frames. Leave it until water is coming in and you may need plastering and decorating as well. Around Brightwalton, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
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 Brightwalton customers choose us
- 20+ years of sealant experience
- 180+ five-star Google reviews
- White, clear, grey or coloured to suit, where the product allows
- Neat joints and a tidy finish
Nearby places to Brightwalton
What else we do in Brightwalton
Honest limits
We’ll always be straight with you, so here’s what new sealant will not do:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- A frame that has rotted at the joint
- Damp coming through the wall itself rather than the frame joint
If you are not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- uPVC windows
- Timber windows & doors
- Composite doors
- Window sills
- Patio & French doors
- Aluminium frames
When to call us in Brightwalton
Every frame moves through the day. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the masonry beside it stays put. If the sealant cannot stretch, it splits.
People normally contact us after spotting one of these:
- Draughty joints inside around the window
- Untidy mastic left by window fitters
- Whistling draughts around closed windows
- Black, perished sealant on frames
Schools such as Brightwalton C.E. Aided Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Comparing quotes
- What product goes in the joint
- What happens if they find a problem under the old sealant
- When the joint can take water or movement
- How the joint is cleaned and prepared