Kent · England
Flete Window Mastic
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in Flete. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Mastic that is falling out in pieces
- Untidy mastic left by window fitters
- Cracked or shrunken mastic around the frame
How we handle window mastic in Flete
Behind a thin line of old mastic there’s sometimes a deep void. 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 leaking joints at the ends of sills and white mastic on grey or black frames, on patio & French doors, uPVC windows and aluminium frames.
Homes in small places like Flete often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Location
- Flete (CT9)
- Region
- Kent
- Cover
- One year on every job
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Timber windows & doors
Timber moves with moisture as well as heat, so the joint must stay flexible. We seal onto sound, dry paintwork or timber.
Composite doors
Front doors take the weather head on, and the top and bottom corners tend to fail first. We pay most attention there.
What else we do in Flete
Window mastic in Flete: local notes
Flete is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around window and door frames, especially on the side facing the sea. Historic houses like Quex Park (about 2.2 miles west) are a reminder that the area around Flete has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Homes close to St. Catherine's Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Letting a property close to Margate station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
Flete is about 1 mile south-west of Margate, in Kent. Wherever you are in the CT9 postcode area, we cover window mastic for homes and businesses. Our Kent coverage runs to 922 places, Flete among them. Our Chelmsford page covers work nearby.
All of CT9 is covered for window mastic. Window mastic is available to properties on Victoria Road, Flete Road and Norfolk Road and the roads around them. We also cover the places around Flete: Westwood (1 mile east), Haine (1 mile south-east), Manston (1 mile south), Garlinge (1 mile north-west) and Margate (1 mile north-east). Further out, we also cover Canterbury (14 miles south-west), Broadstairs (3 miles east), Whitstable (15 miles west), Deal (10 miles south), Herne Bay (10 miles west) and Walmer (11 miles south).
Local landmarks in Flete
In Flete, that means homes and buildings near Hartsdown Academy, among other places. The nearest railway station is Margate station, roughly 1.5 miles north. A little further out are Queen Elizabeth the Queen Mother Hospital (1.3 miles north-east) and Westwood Cross (1.1 miles east). Not far away are Sandwich and Pegwell Bay.
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will give you a quote.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can go on one quote.
What sealant work cannot fix
Some problems need a builder, plumber or other trade rather than us:
- Penetrating damp from a failed cavity tray or render
- A door that needs adjusting, rehanging or new seals
- Condensation trapped between the panes
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think.
Surfaces we seal
- Timber windows & doors
- Composite doors
- Patio & French doors
- Aluminium frames
- uPVC windows
- Window sills
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 morning for a couple of windows and a door. Somewhere like Flete 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.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Preparing for the visit
- Keep pets and children clear of the area while we work
- For indoor joints, keep the area dry beforehand if you can
- Let us know if you’ve seen damp or leaks
Getting a quote
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or send us an email.
Related advice
Flete questions
Is window mastic in a coastal place like Flete any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Can you help a landlord with a rental near Margate station?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
Does the work come with a guarantee?
Yes. Each job is covered for 12 months.
Where are you based?
We’re a Crawley-based firm. Our area covers South East England, London and Scotland.
How long does it take to reseal the windows on a house?
It depends on access, the old mastic and the size of the frames. We’ll tell you how long your job needs when we quote.
Can I paint over the new sealant?
Most silicone can’t be painted. Let us know beforehand, and we’ll use a paintable product where it suits.
Can you reach windows above the ground floor?
Yes, where they can be reached safely. Tell us about access when you get in touch so we can plan the job.
Do you seal inside as well as outside?
Yes, we do both. Indoors, we seal between the frame and the plaster or reveal, using a paintable sealant if you want to decorate.
Do you need window mastic in Flete?
Mastic ages in the weather. Sunlight dries the surface out, until it loses its stretch and starts to crack.
The problems people generally mention when they call are:
- Draughty joints inside around the window
- Rushed sealant from a window installation
- Mastic that has split away from the wall
- Damp patches on the reveal after heavy rain
If you look after a building such as St Gregory's Catholic Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Before you book anyone
- Whether you can choose the colour
- How long to leave it before use
- Which sealant they’ll use, and why
- Whether they seal over old material or remove it
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. Our tips:
- Avoid harsh chemicals near the mastic
- Keep paint off silicone joints
- Air rooms to keep condensation down around windows
- Make sure the drainage slots are not blocked
Try not to touch the new joint while it cures, following the cure time we give you. Keep jet washers away from the frames.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.