East Sussex · England
Sand mastic for sash & case windows in East Dean, East Sussex
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in East Dean, with a one-year guarantee on every job. Ask us for a quote.
- Crumbling sand mastic round a window
- Draughts and rain around sash boxes
- Silicone on a period window that looks wrong
Signs you need sand mastic in East Dean
Some old mastic was never deep enough. A thin layer does not hold well, which is why we pack deep voids first and get the depth right.
Common reasons people contact us are:
- Silicone on a period window that looks wrong
- Weathered mastic on the most exposed windows
- Gaps round a timber door in stone or brick
- Window mastic to renew ahead of painting
If you let a flat or house near Eastbourne station, older sash windows in a rental need their mastic kept sound to keep the weather out.
What your quote should include
- How long to leave it before use
- What the quote includes, VAT included or not
- How hidden problems are handled
- Whether they seal over old material or remove it
Sand mastic in East Dean
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s made from sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. Common call-outs are for gaps between timber frames and stone or brick and a silicone bead on a sash window that spoils the look, on period & listed homes, tenement windows and stone surrounds.
Somewhere as small as East Dean, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Your job is guaranteed for a year, as with all our work.
- Location
- East Dean (BN20)
- Region
- East Sussex
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Quotes for sand mastic in East Dean
We don’t publish a price list, because no two jobs are the same. The quote depends on:
- Mould in or behind the old joints
- How many areas need sealing
- The old material and how stubborn it is
- The amount of work
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and agree the price before starting.
Asking for a quote
When you call or email, these details help:
- Where the job is, and your postcode
- If it’s domestic, commercial or a hotel
- What’s wrong with the joints now
- Whether it has been sealed before
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, and email pictures if that’s easy.
Sand mastic in East Dean: local notes
East Dean is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around The Parish Church of St Simon and St Jude, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
East Dean is about 4 miles south-west of Eastbourne, in East Sussex. Whether you are in the middle of East Dean or further out, sand mastic is available for homes and businesses alike, from flats and houses to offices and hotels. East Dean is one of 289 towns and villages in East Sussex where we work for sand mastic. Our Brighton page covers work nearby, about 16 miles away.
Work in BN20 is quoted and booked the same way as anywhere else. Sand mastic is available to properties on Lower Street, Went Way and Gilberts Drive and the roads around them. Other places close to East Dean include Friston (1 mile north-east), Birling Gap (1 mile south), Jevington (2 miles north), Meads (3 miles east) and Old Town (3 miles east). Further out, we also cover Eastbourne (4 miles north-east), Bexhill-on-Sea (13 miles north-east), Seaford (4 miles west), Lewes (12 miles north-west), Hailsham (8 miles north) and Uckfield (15 miles north).
Landmarks near East Dean
Around East Dean, our work takes us to homes and buildings near The Tiger Inn. The closest station to East Dean is Eastbourne station, roughly 3.4 miles east of the centre. Nearby you will also find Filching Manor And Motor Museum (3.3 miles north) and Eastbourne District General Hospital (3.3 miles north-east). Not far away are Combe Hill.
Keeping the joints in good condition
Looking after new joints is easy:
- Plan mastic work ahead of painting
- Check with your local planning authority if your home is listed
- Check the mastic when you check the paintwork
- Take care around the mastic when scraping paint
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry so early renewal protects both.
How the visit works
At the end, we look at the finished work together and tell you how long to leave it. The visit itself generally takes a few hours per window, depending on the condition of the joints, depending on the size of the job. Somewhere as small as East Dean, access is often the only tricky part. 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.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us if parking is tricky
Getting a quote
We quote each job on its own, so the first step is telling us about yours. Just ring 0345 464 0079 or email us with the details and send photos if you have them.
Read more
Honest limits
It helps to know what we cannot do:
- Planning or listed building consent (your local planning authority decides)
- Broken panes
- Timber that has rotted
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
What we seal
- Tenement windows
- Period & listed homes
- Timber door frames
- Stone surrounds
- Brick reveals
- Sash and case windows
Questions from East Dean
Do you work for landlords with property near Eastbourne station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before we start.
Does living near the coast affect sand mastic in East Dean?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Can you do several jobs on one visit?
Of course. Doing several areas at once is usually more efficient, so mention them when you ask for a quote.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
Can you seal over the old sealant?
No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Should I try DIY first?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few pictures.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Places near East Dean
What else we do in East Dean
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
If you manage several properties in or around East Dean, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
What the job involves on each surface
Tenement and terrace windows
Upper-floor windows need access planning. Tell us the height and we’ll confirm what’s needed.
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.