Buckinghamshire · England
Sand Mastic in Asheridge
Sand mastic for Asheridge and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Old cement repairs round a window that have failed
- Open joints round the window box
- Failed mastic on an exposed elevation
Sand mastic for homes and businesses in Asheridge
Traditional burnt sand mastic that sits naturally against stone and brick. It’s a good fit for period properties, where modern sealant can look out of place. If you’re dealing with patchy fillers round a sash window and mastic round period door frames that has failed, we can help, on tenement windows, timber door frames and period & listed homes alike.
Homes in small places like Asheridge often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Where
- Asheridge (HP5)
- Wider area
- Buckinghamshire
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What we can’t put right
To be straight with you, some problems need a different trade:
- Planning or listed building consent (your local planning authority decides)
- Broken panes
- Crumbling stone or brickwork round the window
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think.
Where we work in Asheridge
- Sash and case windows
- Tenement windows
- Timber door frames
- Brick reveals
- Period & listed homes
- Stone surrounds
Should I try it myself first?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
How the visit works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours per window, depending on the condition of the joints and we leave things clean and tidy. Somewhere as small as Asheridge, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Keep children and pets away from the work area
- Clear items away from the joints we’re working on
Get a quote
We quote each job on its own, so start by telling us what you need. Just call 0345 464 0079 or send us an email with the details, and pictures are welcome.
Related advice
What the job involves on each surface
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
Period and listed homes
A traditional finish suits a period property, and sand mastic is one of them.
Also near Asheridge
Also in Asheridge
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Look over the window mastic once a year
- Get any rot dealt with first
- Clear gutters so water does not pour onto the windows
- Renew mastic before redecorating the windows
Look at the mastic when you look over the windows. Small cracks are easier to deal with early.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber, which can lead to rot.
Asheridge: your questions answered
Can you help a landlord with a rental near Great Missenden station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Is Asheridge within the area you cover?
Yes, Asheridge is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Is sand mastic better than silicone for my windows?
We’ll talk it through with you. Sand mastic suits many period homes and newer frames suit modern sealant.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Can old silicone round a sash window be swapped for sand mastic?
Normally, yes. With the silicone removed and the joint cleaned we point it with sand mastic.
Can new sealant go over the old?
No, it will not last. 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.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Can you match the sealant colour?
We help you choose a colour that suits. The choice depends on the product the joint needs.
Why deal with it now?
Silicone might seem the quicker option, but it can look wrong on a period surround. Sand mastic is the traditional material and finishes neatly against the masonry. Older cottages and farmhouses around Asheridge can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Doing several joints on one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
What you get with us
- Any old sealant cut out fully, not covered over
- Tidy, careful work
- Sanitary silicone with an anti-fungal additive in wet areas
- Every job guaranteed for a year
See our cost guide or what customers say.
Windows and doors in Asheridge
Historic houses like Cholesbury Manor House (about 1.7 miles north) are a reminder that the area around Asheridge has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s 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.
In the older streets around St John's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you look after a building such as Chartridge Combined School, larger buildings have plenty of frames, and the mastic around each one ages. Rented homes near Great Missenden station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Asheridge is about 2 miles north-west of Chesham, in Buckinghamshire. Every kind of property in Asheridge can book us for sand mastic, old or new, large or small. The work is guaranteed for a year. Our area takes in 263 places across Buckinghamshire, from the larger towns to small villages. We also work in Reading, about 24 miles from Asheridge.
All of HP5 is within our area for sand mastic, from the main roads to the quietest streets. Whether your property is on Widmore Close and Braziers End or a nearby road, our applicators can take on the job. Other places close to Asheridge include Chartridge (1 mile south-west), Bellingdon (1 mile north), Hawridge (1 mile north), Pond Park (1 mile south-east) and Heath End (2 miles north-east). Within a short drive, we also cover Aylesbury (10 miles north-west), High Wycombe (9 miles south-west), Marlow (12 miles south-west), Amersham (4 miles south-east), Beaconsfield (9 miles south) and Chalfont St Peter (9 miles south).
What’s near Asheridge
In Asheridge, that means homes and buildings near Chiltern Hills Academy and The Blue Ball pub. The closest station to Asheridge is Great Missenden station, about 3.6 miles south-west. Nearby you’ll also find Hawridge Court (1 mile north-east) and Chiltern Hospital (3.7 miles south-west). Open spaces near Asheridge include Sands Bank and Pavis Wood.
Landlord and commercial work in Asheridge
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can go on one quote.
If you manage several properties in or around Asheridge, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.