Surrey · England
Sand Mastic in Highstreet Green
We cover Highstreet Green for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Gaps where the frame meets the masonry
- Wind and rain getting in round a sash window
- Mastic dropping out of the joint
What we can’t put right
Before booking, it’s worth knowing the limits too:
- Broken panes
- Decayed frames that need repair
- Decisions on consent for listed homes
If you are not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Surfaces we seal
- Sash and case windows
- Timber door frames
- Stone surrounds
- Brick reveals
- Period & listed homes
- Tenement windows
Sand mastic for homes and businesses in Highstreet Green
Across Highstreet Green, we renew sand mastic around sash and case windows. Each joint is raked out, prepared and pointed by hand for a neat, traditional finish. We’re often asked to deal with crumbling sand mastic round a window and gaps where the frame meets the masonry, on timber door frames, period & listed homes and sash and case windows.
Homes in small places like Highstreet Green often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
Our work is backed for twelve months.
- Where
- Highstreet Green (GU8)
- Region
- Surrey
- Cover
- 12 months on all our work
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Avoid heavy scraping on the mastic joint
- Ask us before painting near the mastic
- Plan mastic work ahead of painting
- Avoid patching sand mastic with silicone
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
Highstreet Green questions
Is Highstreet Green within the area you cover?
Yes. Highstreet Green is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do sand mastic in Highstreet Green?
Yes, Highstreet Green is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Are you insured?
Yes. We’re fully insured for domestic and commercial work.
How long does sand mastic take to harden?
It takes a while. The skin forms first, and the full set comes later and we’ll give you an idea for your job.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Is there any odour?
That depends on the sealant. Some products have a noticeable smell, others very little.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we will agree access with you when we book.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
Frames and glazing around Highstreet Green
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In and around Highstreet Green, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Highstreet Green is about 10 miles south of Guildford, in Surrey. We provide sand mastic to homes and businesses in Highstreet Green and the surrounding area, as part of our work across Surrey. Highstreet Green is one of 395 places in Surrey where we work. Crawley is on our list too, about 18 miles from Highstreet Green.
Postcode districts we cover here for sand mastic: GU8. Other places close to Highstreet Green include Chiddingfold (2 miles west), Hambledon (2 miles north-west), Wormley (3 miles north-west), Sandhills (3 miles north-west) and Hydestile (3 miles north). We also work in nearby towns such as Guildford (10 miles north), Woking (15 miles north), Farnham (11 miles north-west), Dorking (15 miles north-east), Frimley (15 miles north) and Haslemere (5 miles west).
Landmarks near Highstreet Green
The nearest railway station is Witley station, about 2.7 miles north-west of the centre. Other landmarks nearby include Milford Hospital (4.4 miles north). The countryside around Highstreet Green includes Hydon's Ball and Shillinglee Lake.
What we do, step by step
At the end, we look at the finished work together and tell you how long to leave it. The visit itself normally takes a few hours per window, depending on the condition of the joints, depending on the size of the job. In a small place like Highstreet Green, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Keep pets and children clear of the area while we work
- Let us know if you’ve seen damp or leaks
Get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Related advice
When to call us in Highstreet Green
Sand mastic slowly weathers. It hardens, cracks and starts to come away on the stone or timber.
Most people get in touch when they notice something like this:
- Wind and rain getting in round a sash window
- Cement or filler used on old window joints that has cracked
- Window mastic to renew ahead of painting
- A silicone bead on a sash window that spoils the look
Letting a property close to Witley station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- How the colour is chosen
- Is VAT in the price?
- What guarantee comes with the work
- Whether all the old sealant comes out first
Also in Highstreet Green
What affects the quote in Highstreet Green
We do not publish a price list, because no two jobs are the same. What we look at:
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
- Any mould that needs treating
- The number and length of the joints
The cost depends on how much there is to do, how much old material has to come out and access to the work. We give a clear quote before any work starts.
What we need to know
When you call or email, it’s useful to know:
- If someone has resealed it before
- What’s wrong with the joints now
- If it’s domestic, commercial or a hotel
- A few photos by email, if you can
If you’re in Highstreet Green and need sand mastic, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before we start.
Work for landlords, hotels and businesses
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Why deal with it now?
Draughts round a sash window aren’t always the sashes. Open mastic joints round the box can let air in and new mastic seals them. Older cottages and farmhouses around Highstreet Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why book with us
- 4.9 on Google from 180+ five-star reviews
- Every job guaranteed for a year
- Sanitary silicone with an anti-fungal additive in wet areas
- Any old sealant cut out fully, not covered over
Take a look at our cost guide or our reviews.