Kent · England
Sand Mastic in Bexon
Sand mastic for Bexon and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Silicone on a period window that looks wrong
- Open joints round the window box
- Mastic dropping out of the joint
How we handle sand mastic in Bexon
Traditional burnt sand mastic that sits naturally against stone and brick. It suits period and listed homes where a modern sealant bead would stand out. We work on tenement windows, timber door frames and brick reveals, and the jobs we see most are patchy fillers round a sash window and mastic round period door frames that has failed.
In a village or hamlet like Bexon, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Big or small, it’s backed by our one-year guarantee in Bexon and across Kent.

- Where
- Bexon (ME9)
- Region
- Kent
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Windows and doors in Bexon
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to Sittingbourne station? Then any sash windows need sound mastic to keep draughts and rain out. In the older streets around Church of St John the Baptist, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Bexon is about 3 miles south of Sittingbourne, in Kent. Jobs in Bexon get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our Kent coverage runs to 922 places, Bexon among them. We also work in Chelmsford, around 31 miles away.
We work across ME9 for sand mastic and the streets around it. Neighbouring places we cover for sand mastic include Tunstall (1 mile north), Dungate (2 miles east), Highsted (2 miles north-east), Heart's Delight (2 miles north) and Rodmersham Green (2 miles north-east). Within a short drive, we also cover Maidstone (8 miles west), Ashford (13 miles south-east), Sittingbourne (3 miles north), Whitstable (14 miles east), Faversham (8 miles east) and Minster (9 miles north-east).
Local landmarks in Bexon
Locally, jobs take us to homes and businesses close to Cromers Wood and Fulston Manor School, among other places. The nearest railway station is Sittingbourne station, about 2.9 miles north. Nearby you’ll also find Sittingbourne Heritage Museum (2.8 miles north-east) and Bayford Court (3.1 miles north-east).
Other services in Bexon
What affects the cost of sand mastic
We don’t publish a price list, because no two jobs are the same. What we look at:
- Whether there’s mould to deal with
- When we can work, for business premises
- How many rooms, windows or areas are involved
- The size of the job
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
What we need to know
When you call or email, it’s useful to know:
- Any access issues, like height or stairs
- Whether it’s a home or a business
- Where the job is, and your postcode
- Roughly how big the job is
We do not publish a price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To get started, phone 0345 464 0079 or drop us an email.
How the job changes by surface
Stone surrounds
Sand mastic sits naturally against stone. The finish blends with the masonry.
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.
When it is not the sealant
Before you book, it’s worth knowing the limits:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
- Whether work needs listed building consent
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly.
Surfaces we seal
- Brick reveals
- Period & listed homes
- Tenement windows
- Sash and case windows
- Timber door frames
- Stone surrounds
Why deal with it now?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic will not stop the gaps, and the new mastic is traditionally left unpainted. Older cottages and farmhouses around Bexon can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts.
What you get with us
- Over 20 years’ experience
- We’re fully insured
- 180+ five-star Google reviews
- Quality sealants from Arbo and Everbuild
Your questions about sand mastic in Bexon
Will you come out to Bexon?
Yes. Bexon is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is Bexon in your area for sand mastic?
Yes. Our work covers London and the South East, and Bexon is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and we’ll quote it together.
Can I choose the sealant colour?
We help you choose a colour that suits. The product needed can limit the range.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Are you fully insured?
Yes. We are fully insured for every job we do.
Do you work for letting agents?
Yes, regularly. We can quote for several properties at once, and between tenancies is a good time for the work.
Can sand mastic be painted?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
Do you need sand mastic in Bexon?
Timber swells and shrinks with the weather. That movement opens up the mastic joint little by little.
It’s worth asking for a quote if you see:
- Tired mastic found when preparing windows for paint
- Draughty sash windows at the surround
- Gaps between timber frames and stone or brick
- Gaps round a timber door in stone or brick
For site and facilities teams at buildings such as Bredgar Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- How the colour is chosen
- Which sealant they’ll use, and why
- How hidden problems are handled
- What insurance they hold
How it works
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes anything from a few hours to a full day, depending on how many windows, including the tidy-up. In a small place like Bexon, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Before we arrive
- Mention any tricky access
- On commercial sites, let us know about site rules
- Try not to wet indoor joints just before the visit
Getting a quote
Getting a quote is simple: tell us what needs doing and where. Photos by email help us understand the job.
Advice
How to look after the new joints
To keep the joints looking good and working properly:
- Ask a joiner to look at soft timber first
- Go gently near the mastic when preparing windows
- Check with your local planning authority if your home is listed
- Inspect the joints round the windows every year or so
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens as more mastic falls out.
