Surrey · England
Sand mastic for sash & case windows in Donkey Town, Surrey
Our applicators work in Donkey Town on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Gaps where the frame meets the masonry
- Old cement repairs round a window that have failed
- Gaps round a timber door in stone or brick
How we handle sand mastic in Donkey Town
We renew sand mastic around sash windows and doors in stone and brick. The old mastic is raked out, and new mastic is applied and shaped by hand. We work on period & listed homes, stone surrounds and timber door frames, and the jobs we see most are old sand mastic that has cracked, crumbled or fallen out and draughty sash windows at the surround.
Outdoor sealant needs dry, clean surfaces, so work on frames around Donkey Town is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
There’s a 12-month guarantee on every job.
- Where
- Donkey Town (GU24)
- Region
- Surrey
- Cover
- 12 months on all our work
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How to look after the new joints
A little care helps the new joints last. Our advice:
- Ask us before painting near the mastic
- Plan mastic work ahead of painting
- Avoid heavy scraping on the mastic joint
- Do not run silicone over sand mastic
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
The process
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes anything from a few hours to a full day, depending on how many windows, depending on the size of the job. Somewhere like Donkey Town needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Preparing for the visit
- Mention any parking rules near the property
- For indoor joints, keep the area dry beforehand if you can
- Clear the area around the work
Getting a quote
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.
Read more
Common questions in Donkey Town
Do you cover Donkey Town for sand mastic?
Yes. Our work covers London and the South East, and Donkey Town is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Can you help a landlord with a rental near Bagshot station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Does someone need to be in?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Which products do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will tell you what we’re using.
Will there be a smell?
It depends on the product. Some smell for a while, some hardly at all.
Can you match the sealant colour?
Yes. Sealants come in white, clear, grey and other colours for many products, and we agree the colour with you before any work starts.
Are you fully insured?
Yes. We are fully insured, with over 20 years’ experience in sealant work.
How long does sand mastic take to go off?
It forms a skin fairly soon, then hardens over a longer period. The weather and joint depth both affect it.
Windows and doors in Donkey Town
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as Holy Trinity, the joint between an old wall and a newer frame is usually the first place rain gets in. Rented homes near Bagshot station change hands often, and any sash windows need sound mastic to keep draughts and rain out.
Donkey Town is about 3 miles east of Camberley, in Surrey. Jobs in Donkey Town get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Donkey Town is one of 395 places in Surrey we cover for sand mastic. Reading is on our list too, about 16 miles from Donkey Town.
Every address in GU24 is covered for sand mastic. You’ll find streets such as Broad Street, Orchard Close and Ashley Way, and we cover them all. If you are just outside Donkey Town, we cover Lucas Green (1 mile south-east), West End (1 mile east), Lightwater (1 mile north-west), Bisley (1 mile south-east) and Penny Pot (2 miles east). Within a short drive, we also cover Guildford (7 miles south-east), Woking (4 miles south-east), Camberley (3 miles west), Farnham (11 miles south-west), Egham (8 miles north-east) and Walton-on-Thames (11 miles east).
Near you in Donkey Town
Typical jobs here are in homes near Holy Trinity CofE Primary School and Brentmoor Heath. The closest station to Donkey Town is Bagshot station, roughly 2.3 miles north-west. Well-known places in the area include Brookwood Hospital (2.3 miles south-east) and The Museum of The National Rifle Association (1.9 miles south). Not far away are Brookwood Lye.
What sealant work can’t fix
A few problems are outside what sealant work can do:
- Sashes that rattle, stick or will not open
- Decisions on consent for listed homes
- Cracked or broken glass
If in doubt, ring 0345 464 0079 or email us and we will say what we think before booking.
Where we work in Donkey Town
- Brick reveals
- Sash and case windows
- Tenement windows
- Stone surrounds
- Timber door frames
- Period & listed homes
Also near Donkey Town
What else we do in Donkey Town
How the job changes by surface
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.
Period and listed homes
Materials matter on listed and conservation-area homes. Sand mastic is often the preferred finish.
Do you need sand mastic in Donkey Town?
Shallow joints are a common cause. Mastic that’s too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
People normally contact us when they notice something like this:
- Old sand mastic that has cracked, crumbled or fallen out
- A silicone bead on a sash window that spoils the look
- Gaps where the frame meets the masonry
- Wind and rain getting in round a sash window
For site and facilities teams at buildings such as Gordon's School, the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- What insurance they hold
- When the joint can take water or movement
- How long the guarantee is
- Is VAT in the price?
Quotes for sand mastic in Donkey Town
The quote reflects the job in front of us. We look at:
- Any working-time requirements on site
- The number of rooms or windows
- How much there is to do
- The type of sealant required
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are not sure whether it needs doing, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Whether it’s a home or a business
- If someone has resealed it before
- Pictures of the joints, sent by email
- How we’d reach the joints
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job, and we’ll come back to you with a quote.
For landlords and businesses
Landlords and letting agents in Donkey Town can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.