Oxfordshire · England
Sand Mastic in Chinnor
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Chinnor. Fully insured, ARBOMaster approved and guaranteed for a year.
- Patchy fillers round a sash window
- Old sand mastic that has cracked, crumbled or fallen out
- Cracked mastic round a front door frame
Sand mastic for homes and businesses in Chinnor
On many period windows, sand mastic looks right and suits the building. Newer frames usually get a flexible sealant instead, and we’ll talk through which suits your home. We work on timber door frames, period & listed homes and brick reveals, and people most often call us about modern sealant on a period surround and old sand mastic that has cracked, crumbled or fallen out.
Homes around Chinnor range from older properties to newer houses, and their windows range just as widely. Each frame material needs the right sealant against the right wall.
A one-year guarantee comes as standard, so you are not left on your own once the job is done.
- Place
- Chinnor (OX39)
- Wider area
- Oxfordshire
- Cover
- 12 months on all our work
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in Chinnor
For anyone letting property in or around Chinnor, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.
We work for landlords and letting agents as well as householders. Sealant work between tenants keeps a property looking cared for.
Nearby places to Chinnor
More services for Chinnor
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Find out about consent before window work on a listed home
- Sort the mastic before the decorators arrive
- Avoid heavy scraping on the mastic joint
- Keep modern sealant off the mastic
Avoid painting over the new mastic, as traditional guidance advises. If you’re redecorating, ask us first.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry so early renewal protects both.
How it works
Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours per window, depending on the condition of the joints. A visit to Chinnor is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Tell us if parking is tricky
- Mention any sign-in or site rules at work premises
Ask for a quote
There’s no standard price list. Instead, we send you a clear quote for your job. To get started, ring 0345 464 0079 or send us an email.
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What the job involves on each surface
Period and listed homes
A traditional finish suits a period property.
Sash and case windows
The mastic round a sash window is on show so we finish it carefully.
Questions from Chinnor
Can you do sand mastic in Chinnor?
Yes, Chinnor is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing.
Do you cover smaller places like Chinnor?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
What is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder, used between timber frames and stone or brick.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can I choose the sealant colour?
In most cases you can choose. We’ll tell you which colours the right product comes in and agree one before work begins.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
Do you need sand mastic in Chinnor?
Most of it is simply age. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
Look out for any of the following:
- Mastic dropping out of the joint
- Patchy fillers round a sash window
- Open joints round the window box
- Window mastic to renew ahead of painting
For an older house near a landmark such as Church of St Andrew, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What to look for in a quote
- How long to leave it before use
- What preparation is included
- Is VAT in the price?
- Whether you can choose the colour
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
Sand mastic in Chinnor: local notes
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 Adwell House (about 3.6 miles west) nearby, there’s older building stock in the area around Chinnor as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you look after a building such as St Andrew's Church of England Primary School, larger buildings have plenty of frames, and the mastic around each one ages. If you let a flat or house near Princes Risborough station, any sash windows need sound mastic to keep draughts and rain out.
Chinnor is about 8 miles north-west of High Wycombe, in Oxfordshire. Homes, rented property, offices and hotels in Chinnor can book us for sand mastic. The work is guaranteed for a year. Chinnor is one of 443 towns and villages in Oxfordshire where we work. Oxford is on our list too, about 14 miles from Chinnor.
Every address in OX39 is covered for sand mastic, from the main roads to the quietest streets. We cover properties on Station Road, Woodgreen Square and Church Road. Close by, we work in Emmington (1 mile north-west), Sydenham (2 miles west), Kingston Stert (2 miles west), Towersey (3 miles north) and Kingsey (4 miles north). Larger places within reach include Oxford (14 miles west), Henley-on-Thames (12 miles south), Benson (10 miles south-west), Headington Quarry (13 miles west), St John Street area (15 miles west) and Wallingford (12 miles south-west).
Around Chinnor
In Chinnor, that means homes and buildings near The Crown pub and the streets around them. The closest station to Chinnor is Princes Risborough station, about 3.1 miles north-east of the centre. A little further out are Thame Community Hospital (4 miles north-west). Not far away are Bald Hill and Oakley Hill nature reserve.
Honest limits
New sealant can’t fix everything, and we’d rather say so up front. It will not solve:
- Decayed frames that need repair
- Sash cords, weights and draught-proofing of the sashes
- Masonry that needs repairing
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.
What we seal
- Period & listed homes
- Stone surrounds
- Tenement windows
- Timber door frames
- Sash and case windows
- Brick reveals