Oxfordshire · England
Sand mastic for sash & case windows in Bunkers Hill, Oxfordshire
Window and door surrounds in Bunkers Hill need attention? We cut out the old, prepare the joints and apply the right sealant.
- Gaps where the frame meets the masonry
- Mastic dropping out of the joint
- Window mastic to renew ahead of painting
Sand mastic in Bunkers Hill, done properly
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. If you have crumbling sand mastic round a window and gaps between timber frames and stone or brick, we can help.
In a village or hamlet like Bunkers Hill, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
Whatever the size of the job, you get the same 12-month guarantee in Bunkers Hill and across Oxfordshire.
- Where
- Bunkers Hill (OX5)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Honest limits
Before booking, it’s worth knowing the limits:
- Cracked or broken glass
- Sashes that need overhauling
- Whether work needs listed building consent
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Period & listed homes
- Sash and case windows
- Brick reveals
- Timber door frames
- Tenement windows
- Stone surrounds
Bunkers Hill homes and the weather
Historic houses like Blenheim Palace (about 2.3 miles south-west) are a reminder that the area around Bunkers Hill has older buildings as well as new. Where a home is older, 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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Tackley station, cracked sand mastic around sash windows lets in the draughts tenants complain about. Homes close to Church of Holy Cross include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Bunkers Hill is about 7 miles south-west of Bicester, in Oxfordshire. Our applicators cover sand mastic for homes and businesses in Bunkers Hill. Our Oxfordshire coverage runs to 443 places, and Bunkers Hill is one of them. For nearby work, see our Oxford page, about 8 miles away.
Our applicators cover all of OX5 for sand mastic and the streets around it. Sand mastic is available to properties on Field View Lane and Bunkers Hill. Other places close to Bunkers Hill include Shipton-on-Cherwell (1 mile south-east), Thrupp (1 mile south), Woodstock (2 miles south-west), Tackley (2 miles north) and Begbroke (2 miles south). Further out, we also cover Oxford (8 miles south-east), Banbury (14 miles north), Bicester (7 miles north-east), Abingdon-on-Thames (13 miles south), Witney (9 miles south-west) and Carterton (13 miles south-west).
Near you in Bunkers Hill
Locally, jobs take us to homes and businesses close to Rock Of Gibraltar Public House, among other places. The closest station to Bunkers Hill is Tackley station, roughly 1.8 miles north-east of the centre. Other landmarks nearby include Soldiers of Oxfordshire Museum (2 miles west).
What else we do in Bunkers Hill
How to look after the new joints
After the cure time, these simple habits help:
- Inspect the joints round the windows every year or so
- Check with your local planning authority if your home is listed
- Get any rot dealt with first
- Go gently near the mastic when preparing windows
Leave the new mastic unpainted, which is the traditional advice. If you are redecorating, ask us first.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
Bunkers Hill questions
Do you cover Bunkers Hill for sand mastic?
Yes. We work across London and the South East, and Bunkers Hill is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll give you a clear price.
Can you help a landlord with a rental near Tackley station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Do the sealants smell?
Possibly a little. It fades as the sealant cures.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. If you’re redecorating the window, ask us first and we’ll advise.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
Are you fully insured?
Yes. We are fully insured, with over 20 years’ experience in sealant work.
Should I use sand mastic or silicone?
We will talk it through with you. Period homes often look best with sand mastic, and modern sealants suit newer frames.
Work for landlords, hotels and businesses
Landlords and agents in Bunkers Hill can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
For anyone letting property in or around Bunkers Hill, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
How it works
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for a single window, longer for several, depending on the size of the job. In a small place like Bunkers Hill, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Mention if the joints have been sealed before
- On commercial sites, let us know about site rules
- Try not to wet indoor joints just before the visit
Ask for a quote
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we’ll explain what’s involved and give you a clear price.
Related advice
What affects the quote in Bunkers Hill
There’s no set price list, because no two jobs are the same. The quote depends on:
- Whether there’s mould to deal with
- Which sealant suits the joint
- The number of rooms or windows
- The size of the job
The cost reflects the work involved, not guesswork. That’s why we ask about the job first and agree the price before starting.
Asking for a quote
You do not need to know the technical terms. Just tell us:
- Whether it has been sealed before
- Any access issues, like height or stairs
- Where the property is
- The problem you’ve noticed
For sand mastic in Bunkers Hill, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Signs you need sand mastic in Bunkers Hill
Water gets into small cracks in the mastic and pushes it out. Exposed elevations normally fail first.
Common reasons people contact us include:
- Patchy fillers round a sash window
- Draughty sash windows at the surround
- Weathered mastic on the most exposed windows
- Mastic round period door frames that has failed
Managing a site like Marlborough School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Questions to ask before you book
- How hidden problems are handled
- Is VAT in the price?
- When the joint can take water or movement
- What guarantee comes with the work
How the job changes by surface
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
Sash and case windows
Sash windows are where we do most sand mastic work. We renew the mastic round each box.