West Berkshire · England
East Garston Window Mastic
Professional window mastic in and around East Garston, with old sealant always removed completely.
- Old mastic that has gone black or come away
- Hard, cracked sealant around windows
- Damp patches on the reveal after heavy rain
What window mastic looks like in East Garston
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Around East Garston, as everywhere, window mastic is only as good as the preparation behind it.
East Garston is about 7 miles south of Wantage, in West Berkshire. Across the RG17 area, we cover window mastic for homes and businesses. We cover 155 towns and villages across West Berkshire, from the larger towns to small villages. Oxford is on our list too, around 21 miles away.
We work across the RG17 postcode area for window mastic. You will find streets such as Station Road, Back Street and Humphrey's Lane, and we cover them all. We also cover Eastbury (1 mile west), East Garston Woodlands (1 mile south-west), Great Shefford (2 miles south-east), East Shefford (2 miles south-east) and Shefford Woodlands (2 miles south). Further out, we also cover Newbury (9 miles south-east), Thatcham (11 miles south-east), Speenhamland (9 miles south-east), Hungerford (6 miles south), Lambourn (3 miles north-west) and Shaw (9 miles south-east).
Local landmarks in East Garston
For a walk, there’s Watts Bank.
Window mastic in East Garston
The new joint doesn’t 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’re often asked to deal with gaps where the sill meets the wall and cracked internal joints between frame and plaster, across timber windows & doors, uPVC windows and window sills.
Mastic can only go onto a dry, clean joint, so window work in East Garston is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
You are covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or drop us an email.
- Place
- East Garston (RG17)
- Wider area
- West Berkshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Keep drainage slots and sill grooves clear
- Avoid harsh chemicals near the mastic
- Keep timber frames painted
- Do not aim a pressure washer at the joints
Silicone cannot usually be painted, so mention any painting plans before any work starts. There are paintable sealants for joints that need it.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so it pays to reseal before that happens.
Places near East Garston
More services for East Garston
Common problems we fix in East Garston
Sun, frost and rain wear sealant out. Sunlight dries the surface out, until it loses its stretch and starts to crack.
Most people get in touch when they notice one of these:
- Mastic that has split away from the wall
- Cracked internal joints between frame and plaster
- Old mastic that has gone black or come away
- White mastic on grey or black frames
In the older streets around Church of All Saints, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Before booking anyone
- The length of the guarantee
- Who turns up on the day
- How the joint is cleaned and prepared
- How the colour is chosen
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
What sealant work cannot fix
We’ll always be straight with you, so here’s what sealant can’t fix:
- Rotten timber, which needs a joiner first
- Misting between the panes of a double-glazed unit (that needs a new unit)
- A door that needs adjusting, rehanging or new seals
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Aluminium frames
- Timber windows & doors
- Composite doors
- uPVC windows
- Patio & French doors
- Window sills
East Garston: your questions answered
What guarantee comes with window mastic in East Garston?
Every job comes with our one-year guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
Do you cover East Garston for window mastic?
Yes, East Garston is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing.
Can you quote for more than one area?
Yes. Just list everything you need and you will get one quote.
Can tenants book the work?
Of course. Check with your landlord; we can send the quote to them too.
Can resealing stop a draught around my window?
Yes, if the air is getting in around the frame. If it’s coming through the window seals, we’ll tell you.
Are you fully insured?
Yes. We are fully insured for every job we do.
How long will my window job take?
A handful of frames is a short visit. We confirm the timing with your quote.
How long before the joint can be used?
Different products cure at different speeds, so follow the cure time we give you when we finish.
DIY versus a professional finish
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.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Why deal with it now?
If you’re painting or rendering, reseal at the same time. A clean new bead makes new paint or render look finished, and it’s easier while the walls are being worked on anyway. In a small place like East Garston, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
What you get with us
- Tidy, careful work
- More than 20 years in sealant work
- Quality sealants from Arbo and Everbuild
- ARBOMaster approved applicator
The process
On the day, we start by going over the job with you. Surfaces next to the work are protected before any work starts. Most jobs take anything from an hour or two to a full day, depending on how many frames there are. Somewhere as small as East Garston, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- Move anything stored near the joints
- Keep pets and children clear of the area while we work
- For business premises, tell us about site rules or sign-in
Getting a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job.