Buckinghamshire · England
Sand mastic for sash & case windows in Butler's Cross, Buckinghamshire
Window and door surrounds in Butler's Cross need attention? We cut out the old, prepare the joints and apply the right sealant.
- Cement or filler used on old window joints that has cracked
- Draughts and rain around sash boxes
- Weathered mastic on the most exposed windows
How we handle sand mastic in Butler's Cross
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. 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 old cement repairs round a window that have failed and failed mastic on an exposed elevation, we can help.
Somewhere as small as Butler's Cross, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
The work is covered for a year after we finish. If anything isn’t right with it, phone 0345 464 0079 or drop us an email.
- Where
- Butler's Cross (HP17)
- Wider area
- Buckinghamshire
- Guarantee
- A year, on every job
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in Butler's Cross
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
If you manage several properties in or around Butler's Cross, several properties can go on one quote. Just tell us the addresses and what each one needs.
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Timber that has rotted
- Broken panes
- Damaged stone surrounds
If you’re not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer before you book.
What we seal
- Tenement windows
- Brick reveals
- Stone surrounds
- Sash and case windows
- Timber door frames
- Period & listed homes
What the job involves on each surface
Tenement and terrace windows
Upper-floor windows need access planning. Tell us the height and we will confirm what’s needed.
Period and listed homes
On a listed home or in a conservation area, the right material matters. Like-for-like sand mastic is normally favoured.
What happens on the day
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours per window, depending on the condition of the joints. Somewhere like Butler's Cross needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
How to prepare
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
- Keep pets and children clear of the area while we work
Get a quote
We don’t publish a price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To get started, phone 0345 464 0079 or drop us an email.
Related advice
What affects the cost of sand mastic
We do not publish a price list. What we look at:
- The size of the job
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Helping us quote
When you call or email, it’s useful to know:
- If someone has resealed it before
- The type of property
- Roughly how big the job is
- The problem you’ve noticed
Want a quote for sand mastic? Please call 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and give you a clear price before work begins.
Butler's Cross: your questions answered
Do you cover smaller places like Butler's Cross?
Yes. Butler's Cross 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.
Can you do sand mastic in Butler's Cross?
Yes, Butler's Cross is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job, and we will send you a clear quote.
Do you work for hotels and businesses?
Yes. We have worked for hotels, offices and other businesses, and we’re fully insured.
What information do you need?
A short description and the location, plus pictures if you have them. We’ll ask anything else we need to know.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
How long does the job take?
Typically it takes anything from a few hours to a full day, depending on how many windows. Bigger jobs take longer, and we will tell you how long to expect.
I’m a tenant. Can you help?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
Should I check with the council before work on a listed or conservation-area home?
Check with your local planning authority. They’ll tell you if consent is needed.
Towns and villages near Butler's Cross
Other services in Butler's Cross
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Leave the new mastic unpainted
- Don’t run silicone over sand mastic
- Take care around the mastic when scraping paint
- Find out about consent before window work on a listed home
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber and timber that stays wet can rot.
What sand mastic looks like in Butler's Cross
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Little Kimble station, cracked sand mastic around sash windows lets in the draughts tenants complain about. For site and facilities teams at buildings such as John Colet School, larger buildings have plenty of frames, and the mastic around each one ages.
Butler's Cross is about 4 miles south of Aylesbury, in Buckinghamshire. Jobs in Butler's Cross get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 263 places across Buckinghamshire, large and small. We also work in Oxford, around 19 miles away.
Our applicators cover all of the HP17 postcode area for sand mastic. We cover properties on Ellesborough Road, Chalkshire Road and Wendover Road and the roads around them. Close by, we work in Chalkshire (1 mile north), Ellesborough (1 mile west), Coombe (1 mile south), Terrick (1 mile north) and Nash Lee (1 mile north). We also work in nearby towns such as Aylesbury (4 miles north), High Wycombe (9 miles south), Chesham (8 miles south-east), Marlow (13 miles south), Amersham (9 miles south-east) and Beaconsfield (12 miles south-east).
Around Butler's Cross
Locally, jobs take us to homes and businesses close to The Russell Arms. The nearest railway station is Little Kimble station, about 1.2 miles west of the centre. A little further out are Stoke Mandeville Hospital (3.1 miles north) and Little Kimble Motte (1 mile south-west). Green spaces nearby include Coombe Hill and Brush Hill Local Nature Reserve.
When to call us in Butler's Cross
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
Look out for any of the following:
- Draughts and rain around sash boxes
- Mastic worn away on windows facing the weather
- Old cement repairs round a window that have failed
- Gaps between timber frames and stone or brick
In the older streets around Church of St Peter and St Paul, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Before booking anyone
- How the joint is cleaned and prepared
- The length of the guarantee
- Whether VAT is included
- Who does the work, and how experienced they are