Surrey · England
Sand Mastic in Dora's Green
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Dora's Green and across Surrey. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Gaps where the frame meets the masonry
- Silicone on a period window that looks wrong
- Mastic worn away on windows facing the weather
Sand mastic for homes and businesses in Dora's Green
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted and we will advise if you are redecorating. If you have draughty sash windows at the surround and cracked mastic round a front door frame, we can put it right, on tenement windows, period & listed homes and timber door frames alike.
Outdoor sealant needs dry, clean surfaces, so work on frames around Dora's Green is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Place
- Dora's Green (GU10)
- Wider area
- Surrey
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about sand mastic in Dora's Green
Can you do sand mastic in Dora's Green?
Yes. We work across London and the South East, and Dora's Green is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing.
I let a flat near Farnham station. Can you help?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.
Is it possible to take out silicone and use sand mastic instead?
In most cases. We remove the silicone and clean the joint, then point it with sand mastic.
Will it make a mess?
We keep the work tidy. We protect what’s around the joints.
Is it worth trying it myself?
Sometimes. 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 possible to paint over sand mastic?
It’s traditionally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
Do you guarantee sand mastic work?
You get our one-year guarantee to all our work.
Nearby places to Dora's Green
More services for Dora's Green
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Clear gutters so water does not pour onto the windows
- Have rotten timber repaired before new mastic goes in
- Do not run silicone over sand mastic
- Leave the new mastic unpainted
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at before trying a quick fix.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
Can I do it myself?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you’ve already had a go yourself, that is fine. We cut it out and start again.
What we’re called out for in Dora's Green
Over the years, sand mastic weathers. It hardens, cracks and starts to come away from the frame or the masonry.
Keep an eye out for any of the following:
- Weathered mastic on the most exposed windows
- A silicone bead on a sash window that spoils the look
- Draughty sash windows at the surround
- Tired mastic found when preparing windows for paint
Managing a site like Crondall Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Questions to ask before booking
- What insurance they hold
- What happens if the job turns out different
- What the quote includes, VAT included or not
- What guarantee comes with the work
Why it’s worth doing now in Dora's Green
An open joint round the frame lets weather in. Left, water can reach the timber and the wall so renewing it early protects the window. Older cottages and farmhouses around Dora's Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first.
Why us?
- Approved under the ARBOMaster scheme
- Homes, businesses and hotels
- Old sealant always removed completely
- Anti-fungal silicone where joints get wet
Read how sealant jobs are priced and our reviews.
The process
At the end, we look at the finished work together and explain the cure time. The visit itself usually takes a few hours per window, depending on the condition of the joints, depending on how much there is to do. Somewhere like Dora's Green 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.
- Each surround is checked first.
- 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
- Mention any parking rules near the property
- Move anything stored near the joints
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
Related advice
Windows and doors in Dora's Green
Historic houses like Farnham Castle (about 1.7 miles south-east) are a reminder that the area around Dora's Green 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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Farnham station, any sash windows need sound mastic to keep draughts and rain out. In the older streets around St Mary's Church, the joint between an old wall and a newer frame is generally the first place rain gets in.
Dora's Green is about 2 miles north-west of Farnham, in Surrey. Every kind of property in Dora's Green is covered for sand mastic. The work is guaranteed for a year. Dora's Green is one of 395 towns and villages in Surrey we cover. Reading is on our list too, around 16 miles away.
Here we cover the GU10 postcode area for sand mastic. If you’re just outside Dora's Green, we cover Warren Corner (1 mile north), Redlands (1 mile north-west), Ewshot (1 mile north), Dippenhall (1 mile south) and Crondall (1 mile west). Larger places within reach include Guildford (11 miles east), Woking (13 miles north-east), Camberley (9 miles north-east), Frimley (8 miles north-east), Haslemere (11 miles south-east) and Ash (5 miles east).
Landmarks near Dora's Green
In Dora's Green, that means homes and buildings near Weydon School. The closest station to Dora's Green is Farnham station, about 2.3 miles south-east. Other landmarks nearby include Powderham Castle (1.1 miles south-west) and Museum of Farnham (1.8 miles south-east). For a walk, there’s Aunt's Pool and Farnham Park.
What sealant work cannot fix
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant won’t put right:
- Whether work needs listed building consent
- Sashes that need overhauling
- Decayed frames that need repair
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Surfaces we seal
- Tenement windows
- Timber door frames
- Stone surrounds
- Sash and case windows
- Brick reveals
- Period & listed homes
Landlord and commercial work in Dora's Green
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.