Oxfordshire · England
Window & door mastic in South Leigh, Oxfordshire
Professional window mastic in and around South Leigh, with old sealant always removed completely and a 12-month guarantee.
- Water coming in at the bottom corners of a door
- Black, perished sealant on frames
- Gaps between the frame and the inside reveal
About our window mastic in South Leigh
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. We are often asked to deal with sealant in the wrong colour for the frame and rain getting in at the frame or under the sill, across window sills, timber windows & doors and uPVC windows.
Mastic can only go onto a dry, clean joint, so window work in South Leigh is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
You are covered for a year from the day we finish. If anything isn’t right with it, ring 0345 464 0079 or send us an email.
- Where
- South Leigh (OX29)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Leave it or put it right?
Not every sealant suits a window. Interior caulk and bathroom silicone aren’t made for exterior frame joints. An exterior, low-modulus sealant stays flexible in sun and frost. Older cottages and farmhouses around South Leigh can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, call 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
What you get with us
- A sealant colour to suit the surroundings
- 20+ years of sealant experience
- Arbo and Everbuild products
- Old sealant always removed completely
Signs you need window mastic in South Leigh
Plenty of failed mastic was poorly applied in the first place. Mastic laid onto dusty, damp or crumbling surfaces never bonded as it should, so it comes away long before its time.
The most common problems we see are:
- Cracked or shrunken mastic around the frame
- Gaps between the frame and the inside reveal
- Whistling draughts around closed windows
- Sealant in the wrong colour for the frame
For landlords with property near Hanborough station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What your quote should include
- How hidden problems are handled
- How the surfaces are prepared before sealing
- Are they insured?
- Whether they seal over old material or remove it
Landlord and commercial work in South Leigh
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Hotels need rooms back in use, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Wash the frames with mild soapy water
- Clear any debris from frame drain holes
- Don’t aim a pressure washer at the joints
- Do not paint over the silicone
On timber frames, keep the paintwork in good order, since wood that gets wet swells and shrinks more. Keep paint off the silicone itself.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and heat escapes around the frame. Resealing closes it.
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours for a handful of frames, longer for a whole house and we leave things clean and tidy. Somewhere as small as South Leigh, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- Where gaps are deep, backing rod goes in first.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Every joint is checked before we leave.
Preparing for the visit
- Clear the area around the work
- Let us know about parking restrictions
- Mention any sign-in or site rules at work premises
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that is easy.
Related advice
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
South Leigh homes and the weather
With historic houses such as Minster Lovell Hall (about 4.6 miles west) nearby, there’s older building stock in the area around South Leigh as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
If you live in an older home near Church of St James, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For site and facilities teams at buildings such as Wood Green School, its window and door frames need their mastic kept sound, just like a home’s.
South Leigh is about 3 miles east of Witney, in Oxfordshire. Wherever you are in the OX29 postcode area, we cover window mastic for homes and businesses. We cover 443 towns and villages across Oxfordshire. You can also see our page for Oxford, roughly 9 miles from South Leigh.
All of OX29 is covered for window mastic. You will find streets such as Station Road, Church End and Chapel Road, all of which we cover. We also cover High Cogges (1 mile west), Madley Park (2 miles north-west), Hardwick (2 miles south-west), Cogges (2 miles west) and Stanton Harcourt (2 miles south-east). Larger places within reach include Oxford (9 miles east), Didcot (14 miles south-east), Bicester (15 miles north-east), Abingdon-on-Thames (9 miles south-east), Witney (3 miles west) and Carterton (7 miles west).
Local landmarks in South Leigh
The closest station to South Leigh is Hanborough station, roughly 4.1 miles north-east of the centre. Well-known places in the area include Cogges Manor Farm Museum (2.1 miles west).
Nearby places to South Leigh
What else we do in South Leigh
FAQs for South Leigh
Is South Leigh in your area for window mastic?
Yes, South Leigh is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
Is South Leigh within the area you cover?
Yes, South Leigh is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Will the old sealant be removed?
Yes, always, and completely. New sealant will not bond properly to old, so the joint is cleaned back first.
How long will my window job take?
That depends on the number of frames, how they’re reached and the state of the old mastic. We’ll tell you how long your job needs when we quote.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Do you have insurance?
Yes, we’re fully insured for domestic and commercial work.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
How the job changes by surface
Patio & French doors
Water at the foot of a door frame is not always the mastic: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We check before we reseal.
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We will tell you which suits your home.