West Sussex · England
Window & door mastic in East Worthing, West Sussex
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in East Worthing. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Gaps left after new windows were fitted
- Rain getting in at the frame or under the sill
- Draughty joints inside around the window
How we handle window mastic in East Worthing
The new joint doesn’t have to be white. White, brown, anthracite grey, black and clear sealants are all available, so the line suits the frame instead of standing out. If you are dealing with old mastic that has gone black or come away and gaps left after new windows were fitted, we can put it right, whatever the surface.
Many houses in smaller places like East Worthing have conservatories, garden rooms or patio doors. Their glazing joints and frame seals are as much a part of the job as the windows, and any older timber or sash windows need a sealant that suits them.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Location
- East Worthing (BN11, BN14, BN15)
- Region
- West Sussex
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What we do, step by step
When we get to you, 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 few frames, or a day or more for a whole house. A visit to East Worthing is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
How to prepare
- Keep children and pets away from the work area
- Mention any sign-in or site rules at work premises
- Mention any parking rules near the property
How to get a quote
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job.
Related advice
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep solvents and bleach off the sealant
- Wipe condensation off the frames
- Make sure the drainage slots are not blocked
- Keep timber frames painted
Keep the new mastic undisturbed while it cures, following the cure time we give you. Keep jet washers away from the frames.
Leaks generally show up in wet, windy weather, but resealing works best in dry conditions. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
How the job changes by surface
uPVC windows
Some uPVC windows were sealed at fitting with a quick bead that never bonded. It comes out, deep gaps get backing rod and the joint is resealed.
Patio & French doors
Door frames take knocks and movement every time the doors are used. A flexible sealant copes with that.
Windows and doors in East Worthing
East Worthing 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’s hard on the mastic around window and door frames, especially on the side facing the sea. 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.
Homes close to St George's Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. For landlords with property near East Worthing station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
East Worthing is about 2 miles south-west of Lancing, in West Sussex. For window mastic in and around East Worthing, please ring 0345 464 0079 or drop us an email for a quick quote. We cover West Sussex from our Crawley base, East Worthing included. East Worthing is one of 371 places in West Sussex we cover. There’s also a page for Brighton, about 10 miles away.
We cover every part of BN11, BN14 and BN15 for window mastic and the streets around it. That includes homes and businesses on Ham Road, Eldon Road and Ophir Road. We also cover the places around East Worthing: Sompting (1 mile north), Broadwater (1 mile north-west), Lancing (2 miles north-east), Offington (2 miles north-west) and Worthing (2 miles west). Within a short drive, we also cover Bognor Regis (15 miles west), Burgess Hill (14 miles north-east), Littlehampton (8 miles west), Shoreham-by-Sea (4 miles north-east), Rustington (7 miles west) and Storrington (9 miles north-west).
What’s near East Worthing
We work in homes and buildings around Davison Church of England High School for Girls, Half Brick pub and Beach House Park. The nearest railway station is East Worthing station, about 0.6 miles north. Nearby you will also find Old Castle (2.1 miles north-west) and Museum of Sussex Folklore (2.1 miles north-west). Open spaces near East Worthing include Lancing Ring and Widewater Lagoon.
Landlords, agents and businesses in East Worthing
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Common problems we fix in East Worthing
Plenty of failed mastic was poorly applied in the first place. Mastic laid onto dusty, damp or crumbling surfaces never bonded as it should, so it comes away long before its time.
Look out for any of the following:
- Cracked or shrunken mastic around the frame
- Cracked sealant at the sill ends
- Untidy mastic left by window fitters
- A bead that does not match the frame
Managing a site like Lyndhurst Infant School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Before you book anyone
- Which sealant they’ll use, and why
- What happens if the job turns out different
- When the joint can take water or movement
- Is the old sealant removed completely?
East Worthing questions
Does the coastal weather in East Worthing affect outside sealant?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Do you cover smaller places like East Worthing?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it messy?
Not at all. The area is protected while we work and cleaned up afterwards.
Can I paint over the new sealant?
That depends on the product. Some hybrid sealants can be painted; silicone cannot. Mention any painting plans before any work starts.
Do I have to be there?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
How long will my window job take?
A few frames take a few hours. You will get a timescale with the quote.
Do you have sealant for grey or black windows?
Yes, we choose a colour to suit the frame. Anthracite grey, black, brown and white cover most frames, with clear as an option.
What does window mastic cost?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or send us an email with a short description of the job.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Why it’s worth doing now in East Worthing
A quick bead over the top of old mastic looks like an easy fix, but new sealant can’t bond to old, crumbling mastic. It peels before long, and water still gets in behind. The old mastic has to come out. In a smaller place like East Worthing, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why us?
- Approved under the ARBOMaster scheme
- Quality sealants from Arbo and Everbuild
- Fully insured
- Experience in homes, commercial sites and hotels
Read what affects the cost or customer reviews.