East Sussex · England
Sand mastic for sash & case windows in Rusher's Cross, East Sussex
Problem with your window and door surrounds in Rusher's Cross? We remove the old material, prepare the joints and seal them properly.
- Gaps where the frame meets the masonry
- A silicone bead on a sash window that spoils the look
- Old sand mastic that has cracked, crumbled or fallen out
Why it’s worth doing now in Rusher's Cross
Draughts round a sash window aren’t always the sashes. Open mastic joints round the box can let air in, and renewing the mastic closes them. Older cottages and farmhouses around Rusher's Cross can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Doing several joints on one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will give you a clear quote for the lot.
Why us?
- Over 20 years’ experience
- Full insurance on every job
- An ARBOMaster approved applicator
- Anti-fungal silicone where joints get wet
Take a look at how sealant jobs are priced and our reviews.
Sand mastic in Rusher's Cross
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. If you are dealing with cracked mastic round a front door frame and open joints round the window box, we can put it right, on timber door frames, stone surrounds and tenement windows alike.
Outdoor sealant needs dry, clean surfaces, so work on frames around Rusher's Cross is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Rusher's Cross (TN20)
- Wider area
- East Sussex
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the quote in Rusher's Cross
We do not publish a price list, because jobs vary so much. What we look at:
- Whether old sealant or filler has to be cut out
- Whether there’s mould to deal with
- The number of rooms or windows
- Access and height
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or drop us an email.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- How we’d reach the joints
- Any previous sealing or DIY work
- Photos by email, if that is easy
- Where the job is, and your postcode
Want a quote for sand mastic? Please call 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
What we do, step by step
Good joint work is mostly preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it usually takes a few hours per window, depending on the condition of the joints. Somewhere like Rusher's Cross 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.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Before we arrive
- Tell us about any water getting in
- For indoor joints, keep the area dry beforehand if you can
- Tell us if parking is tricky
Getting a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
Related advice
Aftercare tips
How long the joints last depends on use and care. We suggest:
- Leave the new mastic unpainted
- Keep sills and gutters clear so water drains away
- Ask a joiner to look at soft timber first
- Avoid patching sand mastic with silicone
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.
What sealant work cannot fix
To be straight with you, some problems need a different trade:
- Crumbling stone or brickwork round the window
- Sashes that need overhauling
- Planning or listed building consent (your local planning authority decides)
If you’re not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer.
Joints and surfaces we work on
- Stone surrounds
- Sash and case windows
- Brick reveals
- Period & listed homes
- Tenement windows
- Timber door frames
What the job involves on each surface
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.
Brick reveals
Sand mastic is also used where timber frames meet brick. It suits older brickwork.
Can I do it myself?
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.
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.
Windows and doors in Rusher's Cross
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Wadhurst Castle (about 2.6 miles north-east) nearby, there’s older building stock in the area around Rusher's Cross as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Letting a property close to Wadhurst station? Then any sash windows need sound mastic to keep draughts and rain out. In the older streets around The Parish Church of St John the Baptist, the joint between an old wall and a newer frame is normally the first place rain gets in.
Rusher's Cross is about 5 miles east of Crowborough, in East Sussex. Rusher's Cross gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 289 places across East Sussex, from the larger towns to small villages. For nearby work, see our Crawley page (21 miles or so).
Here we cover the TN20 postcode area for sand mastic. We also cover the places around Rusher's Cross: Tidebrook (1 mile north-east), Coggins Mill (1 mile south-west), Mayfield (2 miles south-west), Mark Cross (2 miles north-west) and Argos Hill (2 miles west). Within a short drive, we also cover Bexhill-on-Sea (15 miles south-east), Hailsham (12 miles south), Crowborough (5 miles west), Uckfield (10 miles south-west), Polegate (15 miles south) and Heathfield (5 miles south).
Local landmarks in Rusher's Cross
Around Rusher's Cross, our work takes us to homes and buildings near Wadhurst Park, among other places. For rail, the closest station is Wadhurst station, roughly 2.7 miles north of the centre. Nearby you’ll also find Ticehurst House Hospital (4.8 miles east). The countryside around Rusher's Cross includes Bewl Water and Crowborough Country Park.
Nearby places to Rusher's Cross
What else we do in Rusher's Cross
Questions from Rusher's Cross
Do you work for landlords with property near Wadhurst station?
Yes, rental work is part of what we do. 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 work begins.
Can you do sand mastic in Rusher's Cross?
Yes. Our work covers London and the South East, and Rusher's Cross is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Should I try DIY first?
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.
Is it OK to seal over old sealant?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. The silicone is cut out and the joint cleaned before the sand mastic goes in.
Do I need to be at home?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you will get one quote.
What exactly is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.