Kent · England
Window Mastic in Flemings
Specialist window mastic for Flemings: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Gaps where the sill meets the wall
- A bead that does not match the frame
- Rushed sealant from a window installation
How we handle window mastic in Flemings
Colour matters on a frame. White, brown, anthracite grey, black and clear sealants are all available, so the line suits the frame instead of standing out. We’re often asked to deal with damp patches on the reveal after heavy rain and cold air getting in at the frame edge, across uPVC windows, composite doors and aluminium frames.
Homes in small places like Flemings 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.
All of our work is guaranteed for twelve months, in Flemings and everywhere else we cover.
- Where
- Flemings (CT13)
- Region
- Kent
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Why it’s worth doing now in Flemings
If you are 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. In a small place like Flemings, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Why Flemings customers choose us
- Experience in homes, commercial sites and hotels
- A sealant colour to suit the surroundings
- 180+ five-star Google reviews
- Any old sealant cut out fully, not covered over
What we cannot put right
It helps to know what we can’t do:
- Broken hinges, locks or handles
- Damp problems in the wall away from the window
- Misting between the panes of a double-glazed unit (that needs a new unit)
If you’re not sure, just ring 0345 464 0079 or email us and we will give you a straight answer before booking.
Surfaces we seal
- Timber windows & doors
- Composite doors
- Window sills
- Patio & French doors
- Aluminium frames
- uPVC windows
Flemings questions
Will you come out to Flemings?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Sandwich station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
How long should I leave it?
Different products cure at different speeds, so please follow the time we give you when we finish.
Can you do upstairs windows?
Yes, as long as they can be reached safely. Let us know about access when you ask for a quote and we will plan for it.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint.
Do you guarantee window mastic?
Yes. Every job comes with our 12-month guarantee, and we’re ARBOMaster approved applicators.
Is it worth trying it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Will new mastic stop draughts?
If the draught is coming in around the frame, yes. If it’s through the window’s own seals or a hinge, that is a different fix, and we will say so.
Should I try it myself first?
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, and the work is guaranteed for a year.
A careful DIYer can reseal a simple joint, 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.
Also in Flemings
Frames and glazing around Flemings
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Goodnestone Park (about 2.7 miles south-west) nearby, there’s older building stock in the area around Flemings as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
For site and facilities teams at buildings such as Ash Cartwright and Kelsey Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s. In the older streets around Church of St Nicholas, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Flemings is about 6 miles north-west of Deal, in Kent. Homes, rented property, offices and hotels in Flemings is covered for window mastic. Every job comes with our 12-month guarantee. Our area takes in 922 places across Kent, large and small. For nearby work, see our Chelmsford page (47 miles or so).
Postcode districts we cover here for window mastic: CT13. We also cover Barnsole (1 mile west), Hammill Park (1 mile south), Coombe (1 mile north-east), Staple (1 mile west) and Ash (1 mile north). We also work in nearby towns such as Canterbury (9 miles west), Margate (9 miles north-east), Dover (9 miles south), Folkestone (13 miles south), Ramsgate (8 miles north-east) and Broadstairs (9 miles north-east).
What’s near Flemings
We work in homes and buildings around The Black Pig Inn and Sandwich Technology School. The closest station to Flemings is Sandwich station, roughly 2.8 miles east. Nearby you’ll also find White Mill (2.4 miles north-east). Open spaces near Flemings include Monk's Wall nature reserve.
For landlords and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Do you need window mastic in Flemings?
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
The problems people generally mention when they call include:
- Gaps between the frame and the inside reveal
- Cold air getting in at the frame edge
- Leaking joints at the ends of sills
- Mastic that is falling out in pieces
If you let a flat or house near Sandwich station, renewing tired window mastic between tenants heads off draught and damp complaints.
What to look for in a quote
- Whether VAT is included
- When the joint can take water or movement
- What guarantee comes with the work
- Whether they seal over old material or remove it
Surface by surface
Composite doors
Composite doors are normally hung in an uPVC-type frame, and the joint around it is sealed like a window. The bead is colour-matched to the frame.
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. We cut it out, back any deep gaps and reseal properly.
The process
Most of a good job is in the preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it generally takes most of a day for a typical house, less for a few frames. Somewhere as small as Flemings, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Before we arrive
- Let us know about stairs, lifts or work at height
- Tell us about any water getting in
- Tell us about any previous sealing or DIY attempts
How to get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.