West Sussex · England
Window & door mastic in Atherington, West Sussex
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in Atherington. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Cracked internal joints between frame and plaster
- Water coming in at the bottom corners of a door
- Cracked or shrunken mastic around the frame
Signs you need window mastic in Atherington
A lot of older mastic was never designed to stay flexible. Once it has hardened, the frame’s movement tears it from the wall, leaving a hairline gap down one side.
People normally contact us when they notice something like this:
- Mastic that has split away from the wall
- Leaking joints at the ends of sills
- Rushed sealant from a window installation
- Draughty joints inside around the window
Rented homes near Littlehampton station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints.
What to look for in a quote
- How hidden problems are handled
- What insurance they hold
- Which colour the sealant will be
- Who does the work, and how experienced they are
Window mastic in Atherington, done properly
Most frames have an outside joint and an inside one. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. We seal one or both, depending on what’s needed. Common call-outs are for cold air getting in at the frame edge and cracked internal joints between frame and plaster, on aluminium frames, timber windows & doors and uPVC windows.
Outdoor sealant needs dry, clean surfaces, so work on frames around Atherington is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
There’s a 12-month guarantee on every job.
- Location
- Atherington (BN17)
- Region
- West Sussex
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Why it’s worth doing now in Atherington
Choosing the product is half the job. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. An exterior, low-modulus sealant stays flexible in sun and frost. Older cottages and farmhouses around Atherington can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
Why us?
- Sealant colour chosen to suit
- ARBOMaster approved applicator
- Full insurance on every job
- Trusted Arbo and Everbuild sealants
Take a look at how sealant jobs are priced and our reviews.
For landlords and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
Frames and glazing around Atherington
Atherington is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around window and door frames, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as St Mary's CofE Primary School, its window and door frames need their mastic kept sound, just like a home’s. Homes close to Bailiffscourt Chapel include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Atherington is about 2 miles west of Littlehampton, in West Sussex. Atherington gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Atherington is one of 371 towns and villages in West Sussex where we work for window mastic. For nearby work, see our Brighton page, about 20 miles away.
Every address in BN17 is covered for window mastic, from the main roads to the quietest streets. Close by, we work in Climping (1 mile north), Horsemere Green (1 mile north-west), Ford (2 miles north), Wick (2 miles north-east) and Littlehampton (2 miles east). Larger places within reach include Worthing (8 miles east), Bognor Regis (5 miles west), Chichester (9 miles west), Selsey (10 miles south-west), Shoreham-by-Sea (14 miles east) and Lancing (11 miles east).
What’s near Atherington
In Atherington, that means homes and buildings near The Littlehampton Academy and The Black Horse Public House. Atherington’s nearest station is Littlehampton station, roughly 1.5 miles east of the centre. Well-known places in the area include Lyminster Siege Castle (3.8 miles north-east) and Rustington Museum (3.3 miles east). Not far away are WWT Arundel.
Places near Atherington
Also in Atherington
Should I try it myself first?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
How the visit works
You do not need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the work takes a morning for a couple of windows and a door for a typical job. Somewhere like Atherington 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 how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Mention any parking rules near the property
- Tell us about any water getting in
Get a quote
Want a quote for window mastic? Please call 0345 464 0079 or email us with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Advice
How we quote for window mastic
We do not publish a price list, because jobs vary so much. What we look at:
- How many rooms, windows or areas are involved
- Any working-time requirements on site
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Asking for a quote
When you contact us, it’s useful to know:
- Any previous sealing or DIY work
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that’s easy
- Any access issues, like height or stairs
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, call 0345 464 0079 or email us.
Honest limits
Sealant is not the answer to every problem, and we’d rather say so up front. Sealant won’t put right:
- Broken hinges, locks or handles
- Soft or decayed wood in the frame
- Worn gaskets, brush seals or a door that has dropped
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
Surfaces we seal
- uPVC windows
- Aluminium frames
- Patio & French doors
- Composite doors
- Timber windows & doors
- Window sills
Your questions about window mastic in Atherington
Does living near the coast affect window mastic in Atherington?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Do you cover smaller places like Atherington?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
What should I tell you?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply phone 0345 464 0079 or send us an email.
I rent my home. Can I book you?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that normally means someone at home.
How much does window mastic cost in Atherington?
Size, access and the old material all affect the cost. Call for a quick quote.
Where are you based?
Mr Mastic is based in Crawley. We cover Atherington and the rest of West Sussex, along with the rest of our area.
Can landlords and businesses book you?
Yes. Domestic, commercial and hotel work are all part of what we do, and we’re fully insured.