West Sussex · England
Worthing Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Worthing. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Gaps between timber frames and stone or brick
- Modern sealant on a period surround
- Old cement repairs round a window that have failed
What happens on the day
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The work itself takes a few hours per window, depending on the condition of the joints, including the tidy-up. In central Worthing, parking can be tight, so tell us about driveways, permits or nearby car parks. For flats, mention stairs, lifts and shared entrances as well.
- First, we look at the surrounds with you and agree what needs doing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Before we arrive
- Keep pets and children clear of the area while we work
- Mention any sign-in or site rules at work premises
- Mention any leaks or damp you’ve noticed
Getting a quote
To get a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll give you a clear quote before any work starts.
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About our sand mastic in Worthing
Across Worthing, we renew sand mastic around sash and case windows. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. If you’re dealing with crumbling sand mastic round a window and tired mastic found when preparing windows for paint, we can help, on timber door frames, tenement windows and sash and case windows alike.
Plenty of homes in Worthing are rented, and windows are easy to overlook between tenancies. Cracked or missing mastic round a frame is a common cause of damp patches and draughts.
A one-year guarantee comes as standard.
- Place
- Worthing (BN13, BN11, BN14, BN12)
- Wider area
- West Sussex
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Different surfaces, different methods
Brick reveals
An open joint at a brick reveal lets weather in. Renewing the mastic closes it.
Stone surrounds
Stone openings are rarely perfectly straight, so the joint varies in width. We shape it by hand to follow the stone.
Windows and doors in Worthing
Worthing 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. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. Historic houses like Ecclesden Manor (about 3.1 miles west) are a reminder that the area around Worthing has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you let a flat or house near West Worthing station, any sash windows need sound mastic to keep draughts and rain out. Schools such as Durrington High School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Worthing is in West Sussex. From the centre of Worthing to the outskirts, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. We cover 371 towns and villages across West Sussex. We also work in Brighton, about 12 miles from Worthing.
Here we cover the BN13, BN11, BN14 and BN12 postcode area for sand mastic. That includes homes and businesses on Church Road, Market Place and High Street and the roads around them. Worthing sits on or near the A24 and A27. We also cover the places around Worthing: Salvington (1 mile north), Offington (1 mile north-east), Broadwater (1 mile east), Findon Valley (2 miles north) and East Worthing (2 miles east). Further out, we also cover Bognor Regis (13 miles west), Burgess Hill (15 miles north-east), Littlehampton (6 miles west), Shoreham-by-Sea (6 miles east), Lancing (3 miles east) and Rustington (5 miles west). Being one of West Sussex’s larger places, Worthing has every kind of property, from flats to offices.
Landmarks near Worthing
Around Worthing, our work takes us to homes and buildings near The George And Dragon Public House, Durrington Minature Railway and Thomas A Becket First School, among other places. The nearest railway station is West Worthing station, about 0.5 miles south-east of the centre. Nearby you’ll also find The Acre (1.2 miles south-east) and Old Castle (within half a mile east). The countryside around Worthing includes Highdown Hill and Widewater Lagoon.
Questions from Worthing
I let a flat near West Worthing station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. You can call 0345 464 0079 or email us with the details for a clear quote.
Do you cover Worthing for sand mastic?
Yes. We work across London and the South East, and Worthing is part of that. You can ring 0345 464 0079 or email us and tell us what needs doing.
Can I choose the sealant colour?
Yes. Sealants come in white, clear, grey and other colours for many products, and we will agree it with you first.
What do you put in the joint?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access.
Is the work guaranteed?
All our work has a one-year guarantee.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
Should I use sand mastic or silicone?
It depends on the window. Period windows in stone or brick generally suit sand mastic and newer frames normally get a flexible sealant.
Should I try it myself first?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Why act early in Worthing
If you’re redecorating, renew the mastic first. Painting over failed mastic doesn’t seal it and traditional guidance is to leave the new mastic unpainted. In flats, shops and offices in Worthing, a failed joint can let water into the unit below or behind a wall, where it can go unnoticed until the damage is done.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Ask us for a quote and we will explain what it covers.
What you get with us
- Every job guaranteed for a year
- An ARBOMaster approved applicator
- 180+ five-star Google reviews
- Any old sealant cut out fully, not covered over
Take a look at how sealant jobs are priced or our reviews.
What we cannot put right
Before you book, it’s worth knowing the limits too:
- Sashes that rattle, stick or won’t open
- Crumbling stone or brickwork round the window
- Planning or listed building consent (your local planning authority decides)
If you are not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before booking.
What we seal
- Stone surrounds
- Sash and case windows
- Period & listed homes
- Timber door frames
- Tenement windows
- Brick reveals
Places near Worthing
More services for Worthing
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Clear gutters so water does not pour onto the windows
- Have rotten timber repaired before new mastic goes in
- Take care around the mastic when scraping paint
- Find out about consent before window work on a listed home
Do not run silicone over the new mastic. If you see a crack, ask us to take a look before trying a quick fix.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
When to call us in Worthing
Over the years, sand mastic weathers. It hardens, cracks and starts to come away from the frame or the masonry.
Common reasons people contact us are:
- Mastic that needs renewing before redecorating
- Modern sealant on a period surround
- Old cement repairs round a window that have failed
- Old sand mastic that has cracked, crumbled or fallen out
For an older house near a landmark such as St Andrew's Church, the joint between an old wall and a newer frame is generally the first place rain gets in.
Before booking anyone
- Is the old sealant removed completely?
- How much experience the applicator has
- What happens if they find a problem under the old sealant
- How long to leave it before use