Oxfordshire · England
Sand mastic for sash & case windows in Great Haseley, Oxfordshire
Sand mastic across Great Haseley and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Gaps between timber frames and stone or brick
- Draughts and rain around sash boxes
- Old sand mastic that has cracked, crumbled or fallen out
Sand mastic for homes and businesses in Great Haseley
Burnt sand mastic is a traditional material blends with stone and brick surrounds. It suits period and listed homes, where modern sealant can look out of place. Typical jobs include failed mastic on an exposed elevation and old sand mastic that has cracked, crumbled or fallen out, on stone surrounds, tenement windows and brick reveals.
Mastic can only go onto a dry, clean joint, so window work in Great Haseley is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Great Haseley (OX44)
- Region
- Oxfordshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Sand mastic in Great Haseley: local notes
With historic houses such as Garsington Manor (about 3.5 miles west) nearby, there’s older building stock in the area around Great Haseley as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. 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.
Managing a site like Great Milton Church of England Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Great Haseley is about 5 miles south-west of Thame, in Oxfordshire. Homes, rented property, offices and hotels in Great Haseley is covered for sand mastic. Every job comes with our 12-month guarantee. Great Haseley is one of 443 towns and villages in Oxfordshire where we work. There’s also a page for Oxford, about 7 miles away.
Every address in OX44 is within our area for sand mastic, from the main roads to the quietest streets. Streets in the area include Rectory Road, Horse Close Cottages and Back Way, and we cover them all. Neighbouring places we cover for sand mastic include Great Milton (1 mile north-west), Milton Common (1 mile north-east), Tiddington (2 miles north), Albury (2 miles north-east) and Draycott (3 miles north). Larger places within reach include Oxford (7 miles west), Didcot (10 miles south-west), Bicester (14 miles north), Abingdon-on-Thames (9 miles west), Thame (5 miles north-east) and Henley-on-Thames (14 miles south-east).
Around Great Haseley
In Great Haseley, that means homes and buildings near The Plough Inn. Well-known places in the area include Thame Community Hospital (5.1 miles north-east) and Waterperry Gardens Rural Museum (2.8 miles north). Green spaces nearby include Wells Farm.
How the job changes by surface
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
Stone surrounds
Stone surrounds suit sand mastic well. It finishes to look like part of the surround.
Common questions in Great Haseley
Do you cover Great Haseley for sand mastic?
Yes, Great Haseley is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing.
Is sand mastic in Great Haseley guaranteed?
Every job comes with our one-year guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Is consent needed for window work on a listed home?
Yes, it’s worth checking. Ask your local planning authority whether consent is needed for work on a listed home or in a conservation area.
I’m a tenant. Can you help?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Is it possible to take out silicone and use sand mastic instead?
Normally, yes. With the silicone removed and the joint cleaned we point it with sand mastic.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Can landlords and businesses book you?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels in Great Haseley.
What we’re called out for in Great Haseley
Water gets into small cracks in the mastic and pushes it out. Windows facing the weather tend to go first.
Any of these means the joints need attention:
- Open joints round the window box
- Cracked mastic round a front door frame
- A silicone bead on a sash window that spoils the look
- Crumbling sand mastic round a window
Homes close to Church of St Peter include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Before you book anyone
- Are they insured?
- How the joint is cleaned and prepared
- Whether they seal over old material or remove it
- How the colour is chosen
Landlord and commercial work in Great Haseley
In hotels, rooms out of use cost money, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Plan mastic work ahead of painting
- Do not run silicone over sand mastic
- Keep sills and gutters clear so water drains away
- Look over the window mastic once a year
Don’t run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber and timber that stays wet can rot.
How we quote for sand mastic
Jobs vary more than people expect. What affects the quote:
- Whether the work is at height
- Mould in or behind the old joints
- The number of rooms or windows
- The amount of work
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 send us an email and we will give you an honest view and a quote.
Helping us quote
When you call or email, these details help:
- The type of property
- The rough size of the job
- What’s wrong with the joints now
- Access, such as stairs, a lift or height
Need a quote? Please call 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
How the visit works
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, the area is protected and the work begins. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere as small as Great Haseley, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Mention any parking rules near the property
- On commercial sites, let us know about site rules
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Read more
Honest limits
Before booking, it’s worth knowing the limits:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Broken panes
- Decisions on consent for listed homes
If you are not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer.
What we seal
- Stone surrounds
- Tenement windows
- Brick reveals
- Timber door frames
- Period & listed homes
- Sash and case windows