Buckinghamshire · England
Sand mastic for sash & case windows in Parslow's Hillock, Buckinghamshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Parslow's Hillock, backed by a one-year guarantee. Call for a quick quote.
- Window mastic to renew ahead of painting
- Weathered mastic on the most exposed windows
- Gaps round a timber door in stone or brick
About our sand mastic in Parslow's Hillock
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. Common call-outs are for a silicone bead on a sash window that spoils the look and cement or filler used on old window joints that has cracked, across timber door frames, period & listed homes and stone surrounds.
Mastic can only go onto a dry, clean joint, so window work in Parslow's Hillock is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
The work is covered for a year after we finish. If anything is not right with it, ring 0345 464 0079 or send us an email.
- Where
- Parslow's Hillock (HP27)
- Wider area
- Buckinghamshire
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
FAQs for Parslow's Hillock
I let a flat near Princes Risborough station. Can you help?
Yes. We work for landlords and agents as well as homeowners. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Can you do sand mastic in Parslow's Hillock?
Yes. We work across London and the South East, and Parslow's Hillock is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
Where is Mr Mastic based?
We’re based in Crawley, and we work across South East England, London and Scotland.
What is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s built up in the joint by hand and finished to sit neatly against the masonry.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
Is it messy?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Should I try it myself first?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Surface by surface
Stone surrounds
Stone surrounds suit sand mastic well. It finishes to look like part of the surround.
Brick reveals
We rake out the old mastic and pack deep voids before the new mastic goes in.
Landlord and commercial work in Parslow's Hillock
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
If you manage several properties in or around Parslow's Hillock, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Places near Parslow's Hillock
Also in Parslow's Hillock
Parslow's Hillock homes and the weather
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Hughenden Manor (about 4.6 miles south-east) nearby, there’s older building stock in the area around Parslow's Hillock as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as Princes Risborough School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. Historic houses such as Hughenden Manor, about 4.6 miles south-east, show how far back building around Parslow's Hillock goes, and older homes nearby need a sealant that suits their walls.
Parslow's Hillock is about 6 miles north of High Wycombe, in Buckinghamshire. Every kind of property in Parslow's Hillock is covered for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Across Buckinghamshire, we cover 263 places, Parslow's Hillock among them. We also work in Oxford, around 19 miles away.
Postcode districts we cover here for sand mastic: HP27. Sand mastic is available to properties on Pink Road and Lily Bottom Lane and the roads around them. Nearby, we also carry out sand mastic in Green Hailey (1 mile north), Princes Risborough (2 miles north-west), Whiteleaf (2 miles north), Lower Cadsden (2 miles north) and Monks Risborough (2 miles north-west). Larger places within reach include Aylesbury (7 miles north), High Wycombe (6 miles south), Chesham (8 miles east), Marlow (10 miles south), Amersham (9 miles east) and Beaconsfield (10 miles south-east).
What’s near Parslow's Hillock
Around Parslow's Hillock, our work takes us to homes and buildings near Pink & Lily pub, among other places. The closest station to Parslow's Hillock is Princes Risborough station, about 1.8 miles west of the centre. Other landmarks nearby include Chiltern Hospital (4.9 miles east) and Great Kimble Dial Hill (2.5 miles north). Open spaces near Parslow's Hillock include Beacon Hill and Brush Hill Local Nature Reserve.
How it works
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Parslow's Hillock, the journey is planned in advance: 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 start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- Keep children and pets away from the work area
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we’re working on
Get a quote
We quote each job on its own, so the first step is telling us about yours. Just ring 0345 464 0079 or email us with the details and send photos if you have them.
Related advice
When something else is needed
We won’t take on work that will not last, so here’s what sealant can’t put right:
- Broken panes
- Timber that has rotted
- Masonry that needs repairing
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
Where we work in Parslow's Hillock
- Tenement windows
- Sash and case windows
- Timber door frames
- Period & listed homes
- Brick reveals
- Stone surrounds
What we are called out for in Parslow's Hillock
Over the years, sand mastic weathers. It hardens, cracks and starts to come away from the frame or the masonry.
Most people get in touch when they notice something like this:
- Window mastic to renew ahead of painting
- Open joints round the window box
- A silicone bead on a sash window that spoils the look
- Weathered mastic on the most exposed windows
If you let a flat or house near Princes Risborough station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
What to look for in a quote
- How the colour is chosen
- Whether the sealant suits the joint
- How the surfaces are prepared before sealing
- What happens if the job turns out different
What affects the cost of sand mastic
The quote reflects the job in front of us. We take into account:
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
- The size of the job
- The product the joint needs
The cost depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
What we need to know
What to tell us when you ask for a quote:
- The problem you’ve noticed
- A few photos by email, if you can
- The address or postcode of the job
- How we’d reach the joints
For a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.