East Sussex · England
Sand mastic for sash & case windows in Westham, East Sussex
Sand mastic for Westham and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Mastic round period door frames that has failed
- Draughty sash windows at the surround
- Gaps where the frame meets the masonry
Landlords, agents and businesses in Westham
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured for the work.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
Sand mastic for homes and businesses in Westham
Traditional burnt sand mastic blends with stone and brick surrounds. It suits period and listed homes, where modern sealant can look out of place. We work on brick reveals, sash and case windows and stone surrounds, and people most often call us about old cement repairs round a window that have failed and wind and rain getting in round a sash window.
In a village or hamlet like Westham, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Location
- Westham (BN24)
- Wider area
- East Sussex
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Why deal with it now?
Replacing sash windows is a big decision for a period home, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. Older cottages and farmhouses around Westham 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 is why we ask a few questions first and send you a clear quote before any work starts.
What you get with us
- Sanitary silicone with an anti-fungal additive in wet areas
- 20+ years of sealant experience
- Rated 4.9 stars on Google
- Old sealant always removed completely
Take a look at how sealant jobs are priced and our reviews.
Places near Westham
Also in Westham
Keeping the joints in good condition
Simple care keeps the joints in good condition. Our advice:
- Keep sills and gutters clear so water drains away
- Go gently near the mastic when preparing windows
- Sort the mastic before the decorators arrive
- Leave the new mastic unpainted
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens.
Sand mastic in Westham: local notes
Westham is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For an older house near a landmark such as St Mary's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Managing a site like Pevensey and Westham CofE Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. For landlords with property near Pevensey & Westham station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Westham is about 3 miles north-east of Eastbourne, in East Sussex. We provide sand mastic to homes and businesses in Westham and the surrounding area, as part of our work across East Sussex. We cover 289 towns and villages across East Sussex, large and small. Brighton is on our list too, around 20 miles away.
We work across BN24 for sand mastic and the streets around it. Whether your property is on High Street, Linkway and Rattle Road or a nearby road, we can help. We also cover the places around Westham: Jenkins' Green (1 mile north-west), Pevensey (1 mile east), Langney (1 mile south), Pevensey Bay (2 miles east) and Wartling (3 miles north-east). Larger places within reach include Eastbourne (3 miles south-west), Hastings (11 miles east), Bexhill-on-Sea (7 miles east), Seaford (10 miles west), Lewes (14 miles west) and Hailsham (4 miles north-west).
Near you in Westham
We work in homes and buildings around Bishop Bell School and The Heron pub, among other places. There’s a railway station in Westham itself: Pevensey & Westham station. Other landmarks nearby include Pevensey Castle (0.6 miles east) and Eastbourne District General Hospital (3.1 miles south-west). Open spaces near Westham include Combe Hill.
Westham: your questions answered
Is sand mastic in a coastal place like Westham any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
I let a flat near Pevensey & Westham station. Can you help?
Yes, we work for letting agents and landlords. 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.
Do you guarantee sand mastic work?
Our 12-month guarantee applies on every job.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint.
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.
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.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we’re fully insured.
Where are you based?
Mr Mastic is based in Crawley. We cover Westham and the rest of East Sussex, along with the rest of our area.
What we do, step by step
We keep the work tidy and contained to the joints we’re treating, so you can get on with your day. The job normally takes a few hours per window, depending on the condition of the joints, and we explain the cure time before we leave. For a village or hamlet like Westham, the journey is planned in advance: 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.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
Get a quote
We don’t publish a price list. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or email us.
Related advice
What the job involves on each surface
Brick reveals
Gaps between frame and brick let in rain and draughts. Renewing the mastic closes it.
Period and listed homes
Period homes look their best with traditional materials.
Honest limits
New sealant can’t fix everything, and we’ll tell you before any work starts. Sealant will not put right:
- Damaged stone surrounds
- Timber that has rotted
- Cracked or broken glass
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
What we seal
- Tenement windows
- Stone surrounds
- Period & listed homes
- Timber door frames
- Brick reveals
- Sash and case windows