West Sussex · England
Window Mastic in Westergate
Professional window mastic in and around Westergate, with every bit of old sealant taken out first and a 12-month guarantee.
- Cracked or shrunken mastic around the frame
- Old mastic that has gone black or come away
- Water coming in at the bottom corners of a door
Window mastic for homes and businesses in Westergate
If you can feel air around a shut window, the gap is often at the frame. A new joint stops the air getting through and quietens the whistle on windy days. If the draught is through the window seals instead, we will tell you. We work on composite doors, timber windows & doors and uPVC windows, and the jobs we see most are hard, cracked sealant around windows and white mastic on grey or black frames.
In a smaller place like Westergate, some walls face open ground and catch the full force of the weather. The mastic around frames on those walls tends to age faster.
Our work is backed for twelve months, in Westergate and everywhere else we cover.
- Where
- Westergate (PO20)
- Region
- West Sussex
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about window mastic in Westergate
Will you come out to Westergate?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Westergate for window mastic?
Yes, Westergate is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Is the work guaranteed?
Yes. Every job comes with our one-year guarantee, and we’re ARBOMaster approved applicators.
What does window mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote.
When is the sealant fully cured?
Different products cure at different speeds, so follow the cure time we give you.
Is it messy?
No. We protect the surfaces around the joints, and we tidy up before we go.
Where are you based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that generally means someone at home.
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
We work for letting agents and landlords as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
What affects the quote in Westergate
Jobs vary more than people expect. What affects the quote:
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
- The size of the job
- Whether the work is at height
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and agree the price before starting.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- What’s wrong with the joints now
- If someone has resealed it before
- Any access issues, like height or stairs
- The type of property
Need a quote? Please phone 0345 464 0079 or send us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Honest limits
Before you book, it’s worth knowing the limits too:
- Damp coming through the wall itself rather than the frame joint
- Draughts through the window seals rather than the frame
- Condensation trapped between the panes
If you’re not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
Where we work in Westergate
- uPVC windows
- Aluminium frames
- Timber windows & doors
- Patio & French doors
- Composite doors
- Window sills
Windows and doors in Westergate
With historic houses such as Goodwood House (about 4 miles north-west) nearby, there’s older building stock in the area around Westergate as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. 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.
For landlords with property near Barnham station, renewing tired window mastic between tenants heads off draught and damp complaints. Schools such as Aldingbourne Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Westergate is about 3 miles north of Bognor Regis, in West Sussex. Across the PO20 area, our applicators can take on window mastic. Westergate is one of 371 places in West Sussex where we work for window mastic. You can also see our page for Portsmouth, about 18 miles away.
Postcode districts we cover here for window mastic: PO20. We cover properties on Oaks Close, Westergate Street and Rosvara Avenue and the roads around them. We also cover the places around Westergate: Nyton (1 mile north-west), Eastergate (1 mile east), Aldingbourne (1 mile west), Norton (1 mile north-west) and West Barnham (1 mile east). Further out, we also cover Worthing (12 miles east), Bognor Regis (3 miles south), Chichester (5 miles west), Selsey (9 miles south-west), Littlehampton (6 miles east) and Lancing (15 miles east).
Near you in Westergate
In Westergate, that means homes and buildings near Ormiston Six Villages Academy, among other places. Westergate’s nearest station is Barnham station, about 1.3 miles east. Nearby you will also find Tote Copse Castle (1 mile west) and Bognor Regis War Memorial Hospital (3.1 miles south).
What happens on the day
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a morning for a couple of windows and a door, and the area is left clean. In a smaller place like Westergate, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- Each frame is looked over and we agree which ones need resealing.
- 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.
- We tool each bead neatly and check every joint is closed.
How to prepare
- Clear items away from the joints we are working on
- Tell us if parking is tricky
- Let us know if you’ve seen damp or leaks
Get a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work and give you a clear quote.
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How to look after the new joints
A little care helps the new joints last. Our advice:
- Keep paint off silicone joints
- Keep solvents and bleach off the sealant
- Look round the frames every year or so
- Avoid blasting the frames with a pressure washer
A yearly look round the frames is enough. Cracks and lifting edges are easy to spot early.
Water gets in quietly when mastic fails. You might not see it until plaster blows or a damp patch appears inside. Catching it early keeps the fix to a reseal.
When to call us in Westergate
Plenty of failed mastic was poorly applied in the first place. Mastic laid onto dusty, damp or crumbling surfaces didn’t grip properly, so it comes away long before its time.
Common reasons people contact us include:
- Cold air getting in at the frame edge
- Gaps between the frame and the inside reveal
- Mastic that has split away from the wall
- Mastic that is falling out in pieces
Historic houses such as Goodwood House, about 4 miles north-west, show how far back building around Westergate goes, and older homes nearby need a sealant that suits their walls.
What your quote should include
- What preparation is included
- The length of the guarantee
- When the joint can take water or movement
- How the colour is chosen
DIY versus a professional finish
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so just mention it when you contact us.