Kent · England
Window Mastic in Bexon
Our applicators work in Bexon on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Gaps where the sill meets the wall
- Water coming in at the bottom corners of a door
- Black, perished sealant on frames
What happens if it’s left?
If you’re painting or rendering, reseal at the same time. A clean new bead makes new paint or render look finished, and it’s easier while the walls are being worked on anyway. Where a wall is exposed, as many are in small places like Bexon, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, phone 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why book with us
- We’re fully insured
- Over 20 years’ experience
- Colour agreed with you before work begins
- Old sealant always removed completely
Read what affects the cost and what customers say.
How we handle window mastic in Bexon
Whether it’s one leaking patio door or every frame on the house, you will get a clear quote before any work starts. To get one, ring 0345 464 0079 or send us an email with the number of frames and any access details. We work on composite doors, timber windows & doors and uPVC windows, and common reasons people get in touch are leaking joints at the ends of sills and rushed sealant from a window installation.
In a village or hamlet like Bexon, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
There’s a 12-month guarantee on every job.
- Place
- Bexon (ME9)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Can I do it myself?
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Windows and doors in Bexon
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Bredgar Church of England Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages. In the older streets around Church of St John the Baptist, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Bexon is about 3 miles south of Sittingbourne, in Kent. Every kind of property in Bexon can book us for window mastic. The work is guaranteed for a year. Bexon is one of 922 towns and villages in Kent we cover. You can also see our page for Chelmsford, about 31 miles away.
All of ME9 is covered for window mastic, from the main roads to the quietest streets. Nearby, we also carry out window mastic in Tunstall (1 mile north), Dungate (2 miles east), Highsted (2 miles north-east), Heart's Delight (2 miles north) and Rodmersham Green (2 miles north-east). We also work in nearby towns such as Maidstone (8 miles west), Ashford (13 miles south-east), Sittingbourne (3 miles north), Whitstable (14 miles east), Faversham (8 miles east) and Minster (9 miles north-east).
Landmarks near Bexon
Typical jobs here are in homes near Cromers Wood and Fulston Manor School and the streets around them. Bexon’s nearest station is Sittingbourne station, roughly 2.9 miles north of the centre. A little further out are Sittingbourne Heritage Museum (2.8 miles north-east) and Bayford Court (3.1 miles north-east).
What we’re called out for in Bexon
A lot of older mastic was never designed to stay flexible. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
The problems people generally mention when they call include:
- Untidy mastic left by window fitters
- A bead that doesn’t match the frame
- Gaps between the frame and the inside reveal
- Black, perished sealant on frames
Rented homes near Sittingbourne station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
What to look for in a quote
- What insurance they hold
- What the quote includes, VAT included or not
- What the cure time is
- Whether all the old sealant comes out first
Your questions about window mastic in Bexon
Will you come out to Bexon?
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.
Do you work for landlords with property near Sittingbourne station?
Yes. We work for landlords and agents as well as homeowners. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Where do you work from?
Our base is Crawley. We work across South East England, London and Scotland.
Can I add another job to the visit?
Yes. Just list everything you need.
Is it worth trying it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Will resealing my frames help with draughts?
If the draught is coming in around the frame, yes. If it’s through the window’s own seals or a hinge, that’s a different fix, and we’ll say so.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
What does window mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote and we will talk you through it.
Honest limits
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Rotten timber, which needs a joiner first
- Damp coming through the wall itself rather than the frame joint
- Faulty window hardware
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
Surfaces we seal
- Patio & French doors
- Composite doors
- Timber windows & doors
- Aluminium frames
- Window sills
- uPVC windows
How it works
The work is kept neat and contained to the joints we’re treating. The job normally takes anything from an hour or two to a full day, depending on how many frames there are, and we tell you how long to leave it before we go. Somewhere as small as Bexon, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Mention if the joints have been sealed before
- Plan for the work area to be out of bounds to pets and children
Get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Read more
What the job involves on each surface
Composite doors
Composite doors are normally hung in an uPVC-type frame, so its perimeter joint is sealed much like a window. The bead is colour-matched to the frame.
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We’ll tell you which suits your home.
Nearby places to Bexon
Other services in Bexon
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Make sure the drainage slots are not blocked
- Check the mastic once a year
- Ventilate rooms so frames do not stay wet inside
- Do not use solvent cleaners on the joint
Keep the new mastic undisturbed while it cures, following the cure time we give you. Keep jet washers away from the frames.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Early resealing stops it reaching that point.