Surrey · England
Sand mastic for sash & case windows in South Godstone, Surrey
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in South Godstone and across Surrey. Fully insured, ARBOMaster approved and guaranteed for a year.
- Mastic worn away on windows facing the weather
- Cracked mastic round a front door frame
- Old cement repairs round a window that have failed
Honest limits
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Broken panes
- Sash cords, weights and draught-proofing of the sashes
- Timber that has rotted
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
Joints and surfaces we work on
- Sash and case windows
- Stone surrounds
- Tenement windows
- Timber door frames
- Brick reveals
- Period & listed homes
How we handle sand mastic in South Godstone
Across South Godstone, we renew sand mastic around sash and case windows. Each joint is raked out, prepared and pointed by hand for a neat, traditional finish. If you’re dealing with gaps where the frame meets the masonry and draughts and rain around sash boxes, we can put it right.
Somewhere as small as South Godstone, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
All of our work is guaranteed for twelve months, in South Godstone and everywhere else we cover.
- Place
- South Godstone (RH9)
- Region
- Surrey
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
South Godstone homes and the weather
Historic houses like Titsey Place (about 4.9 miles north-east) are a reminder that the area around South Godstone has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
If you let a flat or house near Godstone station, cracked sand mastic around sash windows lets in the draughts tenants complain about. For site and facilities teams at buildings such as St Stephen's CofE Primary School, the mastic around its windows and doors needs looking after like any other building’s.
South Godstone is about 5 miles south of Caterham, in Surrey. For sand mastic in and around South Godstone, please call 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Surrey. Our area takes in 395 places across Surrey, from the larger towns to small villages. There’s also a page for Crawley, about 10 miles away.
We work across the RH9 postcode area for sand mastic and the streets around it. That includes homes and businesses on Eastbourne Road, Oaklands and Woodlands Drive and the roads around them. Close by, we work in Crowhurst Lane End (1 mile east), Anglefield Corner (1 mile south-west), Tandridge (1 mile north-east), Crowhurst (2 miles south-east) and Church Town (2 miles north). Further out, we also cover Epsom (12 miles north-west), Horley (6 miles south-west), Redhill (5 miles west), Ewell (13 miles north-west), Reigate (7 miles west) and Caterham (5 miles north).
Local landmarks in South Godstone
In South Godstone, that means homes and buildings near Fox And Hounds Public House and Tilburstow Hill and the streets around them. There’s a railway station in South Godstone itself: Godstone station. Other landmarks nearby include Bletchingley Castle (2.9 miles north-west) and Haxted Watermill Museum (3.9 miles south-east). The countryside around South Godstone includes Mercers Lake and Bay Pond.
Your questions about sand mastic in South Godstone
Can you do sand mastic in South Godstone?
Yes, South Godstone is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing, and we’ll send you a clear quote.
I let a flat near Godstone station. Can you help?
Yes, we work for landlords and letting agents. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
Can old silicone round a sash window be swapped for sand mastic?
Often, yes. With the silicone removed and the joint cleaned we point it with sand mastic.
Will the old sealant be removed?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
What does sand mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you don’t need to watch us work.
Do you offer different sealant colours?
In most cases you can choose. We’ll tell you which colours the right product comes in and agree one before work begins.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
What happens if it’s left?
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry, so dealing with it now protects both. Around South Godstone, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why choose Mr Mastic in South Godstone
- Every job guaranteed for a year
- Quality sealants from Arbo and Everbuild
- Sanitary silicone with an anti-fungal additive in wet areas
- Fully insured
Read what affects the cost and what customers say.
What we do, step by step
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. After that, the work takes anything from a few hours to a full day, depending on how many windows. Somewhere like South Godstone 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 each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Preparing for the visit
- Mention any parking rules near the property
- Mention if the joints have been sealed before
- Mention any sign-in or site rules at work premises
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or send us an email.
Advice
Keeping the joints in good condition
Simple care keeps the joints in good condition. Our advice:
- Do not run silicone over sand mastic
- Clear gutters so water doesn’t pour onto the windows
- Inspect the joints round the windows every year or so
- Leave the new mastic unpainted
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look 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.
Work for landlords, hotels and businesses
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
Towns and villages near South Godstone
More services for South Godstone
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.
If you’ve already had a go yourself, that is fine. We cut it out and start again.
When to call us in South Godstone
Some old mastic was never deep enough. Mastic that’s too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
It’s worth asking for a quote if you see:
- Failed mastic on an exposed elevation
- Gaps round a timber door in stone or brick
- Draughts and rain around sash boxes
- Window mastic to renew ahead of painting
In the older streets around St Stephen, the joint between an old wall and a newer frame is normally the first place rain gets in.
What your quote should include
- Whether VAT is included
- What insurance they hold
- What guarantee comes with the work
- Who turns up on the day