Oxfordshire · England
Window Mastic in South Weston
Window and door frames in South Weston need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Sealant in the wrong colour for the frame
- Untidy mastic left by window fitters
- Rain getting in at the frame or under the sill
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take a morning for a couple of windows and a door. Somewhere as small as South Weston, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we go round the frames with you and agree the list.
- 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
- Let us know about earlier repairs to the joints
- Let us know about parking restrictions
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, phone 0345 464 0079 or drop us an email.
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Window mastic in South Weston, done properly
Mr Mastic’s applicators have more than 20 years’ experience with window and door sealants. We’re ARBOMaster approved and fully insured, and every job is covered by a 12-month guarantee. We work on patio & French doors, uPVC windows and composite doors, and the jobs we see most are hard, cracked sealant around windows and mastic that’s falling out in pieces.
Mastic can only go onto a dry, clean joint, so window work in South Weston is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
There’s a 12-month guarantee on every job, whatever its size.
- Place
- South Weston (OX9)
- Wider area
- Oxfordshire
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Why it’s worth doing now in South Weston
Draughts and leaks don’t always mean new windows. If the frames and glass are in good order, resealing the joints is often all that’s needed. If we find failed glass units or worn seals, we will tell you. In a small place like South Weston, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why book with us
- We leave the area clean and tidy
- You choose the colour before work begins
- 20+ years of sealant experience
- A sealant colour to suit the surroundings
Take a look at what affects the cost and our reviews.
When something else is needed
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Draughts through the window seals rather than the frame
- Damp coming through the wall itself rather than the frame joint
- Broken hinges, locks or handles
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
Where we work in South Weston
- Aluminium frames
- Window sills
- uPVC windows
- Timber windows & doors
- Composite doors
- Patio & French doors
What we are called out for in South Weston
Water runs down the glass onto the sill, so the sill ends and the joint below the frame are common leak points. Failed sealant there lets rain into the wall or behind the frame.
If you can see any of these, it’s time to have the joints looked at:
- Draughts coming in around windows and doors
- Cracked or shrunken mastic around the frame
- Leaking joints at the ends of sills
- Rain getting in at the frame or under the sill
If you look after a building such as Lewknor Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- How the surfaces are prepared before sealing
- Whether VAT is included
- Whether they’re fully insured
- Whether the sealant suits the joint
How the job changes by surface
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so we use a flexible, low-modulus sealant. We match white, brown, anthracite grey and black frames.
Window sills
Where a sill meets brick or render, the ends often crack first. We reseal them so rain can’t run into the wall.
Aftercare tips
To keep the joints looking good and working properly:
- Do not aim a pressure washer at the joints
- Paint up to the joint, not over it
- Keep solvents and bleach off the sealant
- Make sure the drainage slots aren’t blocked
Silicone can’t normally be painted, so mention any painting plans before any work starts. We can use a paintable sealant where that matters.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
Towns and villages near South Weston
Also in South Weston
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Landlords and agents in South Weston can book us as well as householders. Resealing between tenancies keeps a property looking cared for.
South Weston homes and the weather
With historic houses such as Adwell House (about 0.9 miles north) nearby, there’s older building stock in the area around South Weston as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around St Lawrence, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
South Weston is about 5 miles south of Thame, in Oxfordshire. We provide window mastic to homes and businesses in South Weston. South Weston is one of 443 towns and villages in Oxfordshire where we work for window mastic. There’s also a page for Oxford, about 12 miles away.
We work across the OX9 postcode area for window mastic. We cover properties on Weston Road and Rectory Lane. We also cover the places around South Weston: Lewknor (1 mile south-east), Postcombe (1 mile north-east), Shirburn (2 miles south), Aston Rowant (2 miles east) and Kingston Blount (2 miles east). Within a short drive, we also cover Oxford (12 miles north-west), Didcot (12 miles south-west), Abingdon-on-Thames (13 miles west), Thame (5 miles north), Henley-on-Thames (11 miles south) and Benson (6 miles south-west).
Local landmarks in South Weston
Typical jobs here are in homes near Ye Olde Leathern Bottle Public House and Icknield Community College and the streets around them. A little further out are Thame Community Hospital (4.6 miles north). For a walk, there’s Bald Hill and Aston Rowant NNR.
FAQs for South Weston
Do you cover smaller places like South Weston?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you cover South Weston for window mastic?
Yes. Our work covers London and the South East, and South Weston is part of that. Just call 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear quote.
Do you guarantee window mastic?
Yes. Every job comes with our one-year guarantee, and we are fully insured.
How much does window mastic cost in South Weston?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Do you work on first-floor windows?
Yes, where it’s safe. For high or awkward windows, we will tell you what access is needed.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We will tell you how long to leave the joint before we leave.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. It all has to come out first.