Buckinghamshire · England
Sand mastic for sash & case windows in Edgcott, Buckinghamshire
Professional sand mastic in and around Edgcott, with every bit of old sealant taken out first and a 12-month guarantee.
- Weathered mastic on the most exposed windows
- Window mastic to renew ahead of painting
- Patchy fillers round a sash window
When it is not the sealant
Sealant isn’t the answer to every problem, and we will tell you before we start. Sealant will not put right:
- Putty and glazing repairs
- Damaged stone surrounds
- Timber that has rotted
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think before booking.
Where we work in Edgcott
- Brick reveals
- Tenement windows
- Stone surrounds
- Period & listed homes
- Sash and case windows
- Timber door frames
Sand mastic in Edgcott, done properly
We work across Edgcott renewing sand mastic on sash windows and doors. Every joint is cleaned out and filled by hand for a neat, traditional finish. We work on period & listed homes, stone surrounds and sash and case windows, and common reasons people get in touch are patchy fillers round a sash window and a silicone bead on a sash window that spoils the look.
Somewhere as small as Edgcott, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
A 12-month guarantee comes as standard, so you’re covered after we have gone.
- Place
- Edgcott (HP18)
- Wider area
- Buckinghamshire
- Cover
- A year, on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Frames and glazing around Edgcott
Historic houses like Claydon House (about 3 miles north-east) are a reminder that the area around Edgcott 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 is traditional sand mastic. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Homes close to Church of St Michael include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. If you look after a building such as Grendon Underwood Combined School, larger buildings have plenty of frames, and the mastic around each one ages.
Edgcott is about 6 miles east of Bicester, in Buckinghamshire. For sand mastic in and around Edgcott, please phone 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Buckinghamshire. Edgcott is one of 263 towns and villages in Buckinghamshire we cover for sand mastic. We also work in Oxford, around 14 miles away.
We work across the HP18 postcode area for sand mastic. Sand mastic is available to properties on Buckingham Road, St Michaels Close and Lawn House Lane and the roads around them. Nearby, we also carry out sand mastic in Grendon Underwood (1 mile south), Ludgershall (3 miles south), Blackthorn (4 miles south-west), Piddington (4 miles south-west) and Brill (6 miles south). Further out, we also cover Aylesbury (10 miles south-east), Buckingham (7 miles north), Elmhurst (10 miles south-east), Southcourt (11 miles south-east), Princes Risborough (14 miles south-east) and Haydon Hill (9 miles south-east).
Around Edgcott
For a walk, there’s Calvert Jubilee.
Aftercare tips
So the new joints stay in good condition:
- Ask us before painting near the mastic
- Sort the mastic before the decorators arrive
- Find out about consent before window work on a listed home
- Go gently near the mastic when preparing windows
Don’t touch or press the mastic while it hardens. It forms a skin fairly soon but needs longer to fully harden.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry so early renewal protects both.
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again.
Towns and villages near Edgcott
Other services in Edgcott
Landlords, agents and businesses in Edgcott
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
The process
Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes a few hours per window, depending on the condition of the joints, depending on how much there is to do. Somewhere like Edgcott needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Tell us about any water getting in
- Plan for the work area to be out of bounds to pets and children
- Try not to wet indoor joints just before the visit
Ask for a quote
For sand mastic in Edgcott, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Advice
Common questions in Edgcott
Do you cover smaller places like Edgcott?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is Edgcott in your area for sand mastic?
Yes, Edgcott is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job, and we will send you a clear quote.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll advise.
Is the work guaranteed?
You get our one-year guarantee to all our work.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. The silicone is cut out and the joint cleaned, then point it with sand mastic.
Are you an approved applicator?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
I’m a tenant. Can you help?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Can I add another job to the visit?
Yes. Just list everything you need and you’ll get one quote.
Different surfaces, different methods
Period and listed homes
Many older homes were built with sand mastic round the windows. If your home is listed, ask your local planning authority about consent.
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we’ll confirm access.
Why deal with it now?
New mastic over crumbling mastic won’t hold. We remove the loose material first so the new mastic stays put. Older cottages and farmhouses around Edgcott can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first.
Why choose Mr Mastic in Edgcott
- One-year guarantee on every job
- We leave the area clean and tidy
- Full insurance on every job
- 4.9 on Google from 180+ five-star reviews
Take a look at what affects the cost or what customers say.