East Sussex · England
Window Mastic in Westdean
Mastic around window and door frames, sills and patio doors in Westdean, with a one-year guarantee on every job. Call for a quick quote.
- Cold air getting in at the frame edge
- Gaps where the sill meets the wall
- Draughty joints inside around the window
How we handle window mastic in Westdean
Whether it’s one leaking patio door or every frame on the house, you will get a clear quote before any work starts. Just ring 0345 464 0079 or email us and tell us how many frames there are and how they’re reached for window mastic in Westdean. Common call-outs are for whistling draughts around closed windows and a bead that doesn’t match the frame, across timber windows & doors, patio & French doors and window sills.
Homes in small places like Westdean often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
Every job comes with our one-year guarantee, wherever you are in East Sussex.
- Location
- Westdean (BN25)
- Wider area
- East Sussex
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes a few hours for a handful of frames, longer for a whole house, including the tidy-up. Somewhere like Westdean needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Plan for the work area to be out of bounds to pets and children
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. When it suits you, phone 0345 464 0079 or send us an email.
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Your questions about window mastic in Westdean
Do you cover smaller places like Westdean?
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.
I let a flat near Seaford station. Can you help?
Yes, rental work is part of what we do. You can call 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before we start.
How long will my window job take?
The work takes a few hours for a few frames, or a day or more for a whole house. Access and how stubborn the old mastic is affect the time most.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Westdean, along with the rest of our area.
Can you seal over the old sealant?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Does the work come with a guarantee?
Yes, with our one-year guarantee. A yearly look at the joints helps them last.
How long should I leave it?
It depends on the product. We tell you how long to leave it before we go.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we’re fully insured.
How we quote for window mastic
We quote each job individually. These are the things that affect it:
- Access and height
- The size of the job
- Any working-time requirements on site
- Any mould that needs treating
Combining jobs into one visit is normally more efficient than separate visits. We will give you a clear quote for the lot.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The problem you’ve noticed
- Any previous sealing or DIY work
- A few pictures by email, if you can
- Where the property is
We quote each job on its own. Simply phone 0345 464 0079 or drop us an email and describe the job, and pictures are welcome.
Common problems we fix in Westdean
Some failures date back to when the windows were fitted. Sealant run over dust, wet brick or loose mortar never bonded as it should, so it comes away long before its time.
Look out for these signs:
- Cracked or shrunken mastic around the frame
- Cracked internal joints between frame and plaster
- A bead that doesn’t match the frame
- Untidy mastic left by window fitters
Homes close to The Parish Church of All Saints include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Comparing quotes
- Which colour the sealant will be
- Whether they seal over old material or remove it
- What insurance they hold
- What happens if they find a problem under the old sealant
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Repaint timber before it’s bare
- Make sure the drainage slots aren’t blocked
- Clean frames with a soft cloth and soapy water
- Keep solvents and bleach off the sealant
Silicone can’t usually be painted, so if you’re planning to paint the frames or walls, tell us beforehand. We can use a paintable sealant where that matters.
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.
Landlord and commercial work in Westdean
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we’re fully insured for the work.
Westdean homes and the weather
Westdean is close to 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 window and door frames, which can dry out and crack sooner where a building faces the weather. Historic houses like Alfriston Clergy House (about 2 miles north) are a reminder that the area around Westdean has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Rented homes near Seaford station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints. For site and facilities teams at buildings such as Ladycross School, its window and door frames need their mastic kept sound, just like a home’s.
Westdean is about 2 miles east of Seaford, in East Sussex. We carry out window mastic for householders, landlords and businesses in Westdean and nearby, as part of our work across East Sussex. Across East Sussex, we cover 289 places, Westdean among them. For nearby work, see our Brighton page, about 13 miles away.
Every address in BN25 is covered for window mastic, from the main roads to the quietest streets. Other places close to Westdean include Litlington (1 mile north), Dukes Green (2 miles north), Lullington (2 miles north), Alfriston (2 miles north) and Seaford (2 miles west). Within a short drive, we also cover Eastbourne (6 miles east), Bexhill-on-Sea (14 miles east), Lewes (10 miles north-west), Hailsham (7 miles north-east), Uckfield (13 miles north) and Newhaven (5 miles west).
What’s near Westdean
Typical jobs here are in homes near Cuckmere Inn, Seaford Head Nature Reserve and Seaford Head School, among other places. The closest station to Westdean is Seaford station, roughly 2.6 miles west of the centre. Other landmarks nearby include Chailey Heritage Marine Hospital (3.9 miles west) and Old Forge Museum (Alfriston) (2.2 miles north). Not far away are Combe Hill.
Nearby places to Westdean
Also in Westdean
When it isn’t the sealant
To be straight with you, there are a few things sealant won’t fix:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Penetrating damp from a failed cavity tray or render
- A door that needs adjusting, rehanging or new seals
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think before you book.
Where we work in Westdean
- Aluminium frames
- Timber windows & doors
- uPVC windows
- Window sills
- Patio & French doors
- Composite doors
What the job involves on each surface
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. We prepare and reseal every joint, backing the deep ones.
Patio & French doors
Heavy door frames can move more than windows. A flexible sealant copes with that without cracking.