West Sussex · England
Wineham Sand Mastic
Sand mastic across Wineham and nearby, with old sealant always removed completely and a one-year guarantee.
- Cement or filler used on old window joints that has cracked
- Modern sealant on a period surround
- Gaps round a timber door in stone or brick
Keeping the joints in good condition
So the new joints stay in good condition:
- Avoid patching sand mastic with silicone
- Go gently near the mastic when preparing windows
- Check with your local planning authority if your home is listed
- Check the mastic when you check the paintwork
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look rather than patching it.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
Sand mastic in Wineham, done properly
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. If you’re dealing with wind and rain getting in round a sash window and mastic that needs renewing before redecorating, we can put it right, on period & listed homes, stone surrounds and tenement windows alike.
Mastic can only go onto a dry, clean joint, so window work in Wineham is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Place
- Wineham (BN5)
- Region
- West Sussex
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How it works
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, do the work and clear up. It usually takes a few hours for a single window, longer for several. Somewhere like Wineham needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Mention any tricky access
- Clear items away from the joints we’re working on
Getting a quote
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we will talk you through the work and send you a clear quote.
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Towns and villages near Wineham
More services for Wineham
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
What the job involves on each surface
Period and listed homes
Period homes look their best with traditional materials.
Stone surrounds
We take care not to mark the stone when the old mastic comes out.
Questions from Wineham
Is Wineham in your area for sand mastic?
Yes, Wineham is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
What guarantee comes with sand mastic in Wineham?
All our work, in Wineham and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Can new sealant go over the old?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. We remove it all first.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
Do I have to be there?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
Should I check with the council before work on a listed or conservation-area home?
Check with your local planning authority. They decide whether consent is needed.
Can you replace silicone on a period window with sand mastic?
Yes. We remove the silicone and clean the joint before the sand mastic goes in.
Sand mastic in Wineham: local notes
With historic houses such as Ockenden Manor (about 4.9 miles north-east) nearby, there’s older building stock in the area around Wineham as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In and around Wineham, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Wineham is about 5 miles west of Burgess Hill, in West Sussex. Wherever you are in the BN5 postcode area, we cover sand mastic for homes and businesses. 371 places in West Sussex are on our list. There’s also a page for Crawley, about 10 miles away.
Work in BN5 works the same way as everywhere else we cover. Other places close to Wineham include Kent Street (1 mile north-west), Twineham Green (1 mile east), Twineham (1 mile east), Cowfold (2 miles north-west) and Crosspost (2 miles north-east). Further out, we also cover Crawley (10 miles north), Horsham (7 miles north-west), Worthing (12 miles south-west), Haywards Heath (7 miles east), Burgess Hill (5 miles east) and East Grinstead (15 miles north-east).
Around Wineham
A little further out are The Dene Hospital (3.3 miles east). Open spaces near Wineham include Woods Mill.
Landlord and commercial work in Wineham
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Signs you need sand mastic in Wineham
Sand mastic slowly weathers. It hardens, cracks and starts to come away on the stone or timber.
The problems people normally mention when they call include:
- Draughty sash windows at the surround
- Patchy fillers round a sash window
- Crumbling sand mastic round a window
- Failed mastic on an exposed elevation
For an older house near a landmark such as The Parish Church of St Peter, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Before booking anyone
- How long to leave it before use
- Whether you can choose the colour
- How the joint is cleaned and prepared
- The length of the guarantee
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Broken panes
- Sashes that rattle, stick or won’t open
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
What we seal
- Brick reveals
- Tenement windows
- Timber door frames
- Sash and case windows
- Period & listed homes
- Stone surrounds