Kent · England
Westenhanger Window Mastic
Window and door frames in Westenhanger need attention? We cut out the old, prepare the joints and apply the right sealant.
- Damp patches on the reveal after heavy rain
- Sealant in the wrong colour for the frame
- Hard, cracked sealant around windows
Why it’s worth doing now in Westenhanger
Not every sealant suits a window. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. A low-modulus exterior sealant keeps its stretch through hot and cold weather. Around Westenhanger, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why book with us
- 12-month guarantee on every job
- 180+ five-star Google reviews
- Trusted Arbo and Everbuild sealants
- Any old sealant cut out fully, not covered over
Read our cost guide or customer reviews.
Window mastic in Westenhanger
Some gaps around frames are far deeper than they look. Packing it solid with sealant gives a joint that can’t flex, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. Common call-outs are for mastic that has split away from the wall and a bead that doesn’t match the frame, across window sills, timber windows & doors and uPVC windows.
Around Westenhanger, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Location
- Westenhanger (CT21)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Westenhanger
What else we do in Westenhanger
What we cannot put right
We won’t take on work that won’t last, so here’s what sealant cannot put right:
- A sash or casement that will not close properly
- 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 will give you a straight answer.
Joints and surfaces we work on
- Composite doors
- Window sills
- Patio & French doors
- Timber windows & doors
- uPVC windows
- Aluminium frames
Do you need window mastic in Westenhanger?
Some failures date back to when the windows were fitted. Mastic laid onto dusty, damp or crumbling surfaces never bonded as it should, so it comes away long before its time.
If you can see any of these, it’s time to have the joints looked at:
- Old mastic that has gone black or come away
- Water coming in at the bottom corners of a door
- Whistling draughts around closed windows
- Cracked internal joints between frame and plaster
If you live in an older home near All Saints Church, the joint between an old wall and a newer frame is usually the first place rain gets in.
Comparing quotes
- What happens if the job turns out different
- Whether you can choose the colour
- Whether they seal over old material or remove it
- What insurance they hold
Can I do it myself?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
How the job changes by surface
Aluminium frames
Bi-fold and sliding aluminium doors have long frame joints, and the threshold joint takes a lot of water. We prepare and reseal every joint, backing the deep ones.
Patio & French doors
Not every patio door leak is a mastic problem: blocked drain slots, worn brush seals and threshold details can let water in too. We check before we reseal.
Frames and glazing around Westenhanger
Westenhanger is within about 3 miles of 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.
Schools such as Lympne Church of England Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Rented homes near Westenhanger station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Westenhanger is about 2 miles north-west of Hythe, in Kent. Whether you’re in the middle of Westenhanger or further out, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our area takes in 922 places across Kent. There’s also a page for Chelmsford, about 51 miles away.
Postcode districts we cover here for window mastic: CT21. We also cover the places around Westenhanger: Newingreen (1 mile south), Berwick (1 mile south), Pedlinge (1 mile south-east), Lympne (1 mile south-west) and Sandling (1 mile east). We also work in nearby towns such as Ashford (8 miles north-west), Canterbury (13 miles north), Dover (12 miles east), Folkestone (6 miles east), Tower Hamlets (12 miles east) and Hawkinge (6 miles east).
Near you in Westenhanger
We work in homes and buildings around Brockhill Park Performing Arts College, Sandling Park and The Royal Oak Public House and the streets around them. Westenhanger has its own railway station: Westenhanger station. Other landmarks nearby include Hythe Museum (2.5 miles south-east) and Royal Victoria Hospital (5.8 miles east). Not far away are Hatch Park and Tolsford Hill.
What happens on the day
Most of a good job is in the preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a few frames, or a day or more for a whole house. Somewhere like Westenhanger needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip 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.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
How to prepare
- Keep children and pets away from the work area
- Tell us if parking is tricky
- Clear items away from the joints we are working on
Getting a quote
For window mastic in Westenhanger, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
Related advice
Your questions about window mastic in Westenhanger
Does living near the coast affect window mastic in Westenhanger?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Do you work for landlords with property near Westenhanger station?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Does the work come with a guarantee?
Yes, for 12 months. Keeping drainage clear and checking the joints yearly helps them last.
Are you fully insured?
Yes. We are fully insured.
Is the new sealant paintable?
Not if it’s silicone. Tell us your decorating plans and we will pick a sealant to suit.
Will it make a mess?
No. The area is protected while we work and cleaned up afterwards.
What does window mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, phone 0345 464 0079 or send us an email and let us know what needs doing and where.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Landlord and commercial work in Westenhanger
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.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.