Oxfordshire · England
Window & door mastic in Leafield, Oxfordshire
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Leafield. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Gaps where the sill meets the wall
- Sealant in the wrong colour for the frame
- Damp patches on the reveal after heavy rain
Can I do it myself?
If you’ve already had a go yourself, that is fine. We cut it out and start again.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Window mastic for homes and businesses in Leafield
A cold draught around a closed window often comes from the frame edge. A new joint stops the air getting through and quietens the whistle on windy days. Where the air is getting in through the window itself, we’ll say so. We work on composite doors, window sills and aluminium frames, and common reasons people get in touch are untidy mastic left by window fitters and white mastic on grey or black frames.
Somewhere as small as Leafield, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
There’s a 12-month guarantee on every job.
- Place
- Leafield (OX29)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of window mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- Mould in or behind the old joints
- The size of the job
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
What to tell us for a quote
When you call or email, it’s useful to know:
- If someone has resealed it before
- Pictures of the joints, sent by email
- Where the property is
- The rough size of the job
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved.
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.
For anyone letting property in or around Leafield, several properties can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Keep paint off silicone joints
- Wash the frames with mild soapy water
- Keep timber frames painted
- Do not use solvent cleaners on the joint
Wipe the frames with soapy water when you clean the windows, and keep solvents and harsh chemicals off the joint.
On timber windows, water behind the joint can lead to rot. Once wood has rotted, it needs repair before it can be sealed, so early resealing is worth it.
How the job changes by surface
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We’ll tell you which suits your home.
uPVC windows
The frame is cleaned with a product that will not harm the plastic, then the sealant goes in between frame and wall and tooled smooth.
What we do, step by step
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it normally takes most of a day for a typical house, less for a few frames. In a small place like Leafield, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- 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
- Keep children and pets away from the work area
- Tell us about any previous sealing or DIY attempts
- Let us know if you’ve seen damp or leaks
Ask for a quote
Getting a quote is simple: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we’ll come back to you with a quote.
Read more
Honest limits
We will not take on work that won’t last, so these are the limits:
- Damp coming through the wall itself rather than the frame joint
- A frame that has rotted at the joint
- Faulty window hardware
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Joints and surfaces we work on
- uPVC windows
- Window sills
- Timber windows & doors
- Aluminium frames
- Composite doors
- Patio & French doors
What window mastic looks like in Leafield
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. Historic houses like Minster Lovell Hall (about 2.5 miles south) are a reminder that the area around Leafield has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you live in an older home near Church of St Michael and All Angels, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Rented homes near Ascott-Under-Wychwood station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints. For site and facilities teams at buildings such as Leafield Church of England Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Leafield is about 4 miles north-west of Witney, in Oxfordshire. Across the OX29 area, we cover window mastic for homes and businesses. Leafield is one of 443 towns and villages in Oxfordshire where we work for window mastic. You can also see our page for Oxford, roughly 14 miles from Leafield.
Postcode districts we cover here for window mastic: OX29. Window mastic is available to properties on Hewitts Close, Witney Lane and Chapel Close. We also cover the places around Leafield: Ascott d'Oyley (2 miles north-west), Ascott-under-Wychwood (2 miles north-west), Crawley (2 miles south-east), Ascott Earl (2 miles north-west) and Chilson (3 miles north). Larger places within reach include Oxford (14 miles south-east), Abingdon-on-Thames (15 miles south-east), Witney (4 miles south-east), Carterton (5 miles south-west), Faringdon (13 miles south) and Kidlington (11 miles east).
Near you in Leafield
Around Leafield, our work takes us to homes and buildings near The Fox pub. The nearest railway station is Ascott-Under-Wychwood station, about 2.5 miles north-west of the centre. Not far away are Blenheim Farm.
Leafield: your questions answered
Do you work for landlords with property near Ascott-Under-Wychwood station?
Yes, we work for letting agents and landlords. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll send you a clear quote.
Will you come out to Leafield?
Yes. Leafield is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Are you insured?
Yes. We are fully insured, and we can confirm the details when we quote.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Where do you work from?
We work from Crawley. We cover Leafield and the rest of Oxfordshire, along with the rest of our area.
Do the sealants smell?
It depends on the product. Some products have a noticeable smell, others very little.
Is the new sealant paintable?
Most silicone cannot be painted. If you plan to paint, tell us first and we can use a paintable sealant where it suits the joint.