West Sussex · England
Sand mastic for sash & case windows in Earnley, West Sussex
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Earnley and across West Sussex. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Draughts and rain around sash boxes
- A silicone bead on a sash window that spoils the look
- Old sand mastic that has cracked, crumbled or fallen out
How we handle sand mastic in Earnley
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, the joint is prepared and new mastic is shaped by hand. If you’re dealing with gaps round a timber door in stone or brick and wind and rain getting in round a sash window, we can help.
Somewhere as small as Earnley, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Where
- Earnley (PO20)
- Region
- West Sussex
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How the job changes by surface
Stone surrounds
Old stone surrounds are often uneven, so the gap is not the same all the way round. Sand mastic is shaped by hand to suit.
Brick reveals
Gaps between frame and brick let in rain and draughts. Renewing the mastic closes it.
What sealant work cannot fix
In fairness, there are a few things sealant won’t fix:
- Masonry that needs repairing
- Cracked or broken glass
- Sashes that rattle, stick or won’t open
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
Surfaces we seal
- Period & listed homes
- Stone surrounds
- Timber door frames
- Brick reveals
- Sash and case windows
- Tenement windows
What happens on the day
Once we’re on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a single window, longer for several. Somewhere as small as Earnley, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- We finish the mastic to a tidy line.
Preparing for the visit
- Keep children and pets away from the work area
- Mention any leaks or damp you’ve noticed
- Tell us if parking is tricky
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Related advice
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Frames and glazing around Earnley
Earnley is within about 2 miles of 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. 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.
Schools such as East Wittering Community Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Homes close to Earnley Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Earnley is about 3 miles north-west of Selsey, in West Sussex. Homes, rented property, offices and hotels in Earnley is covered for sand mastic. The work is guaranteed for a year. Our West Sussex coverage runs to 371 places, Earnley among them. You can also see our page for Portsmouth, roughly 11 miles from Earnley.
All of PO20 is within our area for sand mastic, from the main roads to the quietest streets. Streets in the area include Earnley Manor Close, Bookers Lane and Drove Lane. We also cover East Wittering (1 mile west), Almodington (1 mile north-east), Somerley (1 mile north), Shipton Green (2 miles north) and Birdham (2 miles north). Larger places within reach include Bognor Regis (7 miles east), Chichester (6 miles north-east), Selsey (3 miles south-east), Littlehampton (14 miles east), Emsworth (7 miles north-west) and Rustington (15 miles east).
What’s near Earnley
Nearby you will also find Selsey Lifeboat Museum (3.9 miles south-east). For a walk, there’s Pilsey Island.
How to look after the new joints
After the cure time, these simple habits help:
- Go gently near the mastic when preparing windows
- Leave the new mastic unpainted
- Inspect the joints round the windows every year or so
- Check with your local planning authority if your home is listed
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall so early renewal protects both.
Places near Earnley
Other services in Earnley
What affects the quote in Earnley
Every job gets its own quote. These are the things that affect it:
- Which sealant suits the joint
- Any mould that needs treating
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, call 0345 464 0079 or email us for an honest opinion and a quote.
Asking for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Where the job is, and your postcode
- Whether it has been sealed before
- Whether it’s a home or a business
- A few photos by email, if you can
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. A few photos by email make the job easier to understand, and we’ll come back to you with a quote.
Questions from Earnley
Do you cover smaller places like Earnley?
Yes. Earnley is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is sand mastic in a coastal place like Earnley 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.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Will the old sealant be removed?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we’ll advise.
Can you do several jobs on one visit?
Yes. Just list everything you need.
Do you work for landlords and businesses?
Yes, regularly. Several properties can be quoted together, and between tenancies is a good time for the work.
Landlords, agents and businesses in Earnley
Letting agents and landlords in Earnley can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
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.