Kent · England
Kit's Coty Window Mastic
Our applicators work in Kit's Coty on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Sealant in the wrong colour for the frame
- Cold air getting in at the frame edge
- Draughty joints inside around the window
Leave it or put it right?
Resealing frames is a short job: the visit takes a few hours for a handful of frames, longer for a whole house. Wait for damp to appear and there may be plaster and decorating to sort out too. In a small place like Kit's Coty, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Doing several joints on one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why choose Mr Mastic in Kit's Coty
- Neat joints and a tidy finish
- More than 20 years in sealant work
- Quality sealants from Arbo and Everbuild
- Colour picked to suit the job
Window mastic for homes and businesses in Kit's Coty
The new joint doesn’t have to be white. White, brown, anthracite grey, black and clear sealants are all available, so the line suits the frame instead of standing out. We work on composite doors, timber windows & doors and uPVC windows, and people most often call us about cracked internal joints between frame and plaster and mastic that has split away from the wall.
Around Kit's Coty, 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.
Big or small, you get the same one-year guarantee in Kit's Coty and across Kent.
- Where
- Kit's Coty (ME20)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
The process
We keep the work tidy and contained to the area we’re working on. Expect the work to take a morning for a couple of windows and a door. Somewhere like Kit's Coty needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First we look at every frame and agree the list.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Every joint is checked before we leave.
How to prepare
- Try not to wet indoor joints just before the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Clear the area around the work
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Just call 0345 464 0079 or email us with the details and send photos if you have them.
Advice
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Don’t use solvent cleaners on the joint
- Wash the frames with mild soapy water
- Do not aim a pressure washer at the joints
- Paint up to the joint, not over it
Most silicone sealants won’t take paint, so if you’re planning to paint the frames or walls, tell us beforehand. We can use a paintable sealant where that matters.
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. Catching it early keeps the fix to a reseal.
Places near Kit's Coty
More services for Kit's Coty
Questions from Kit's Coty
I let a flat near Aylesford station. Can you help?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.
Can you do window mastic in Kit's Coty?
Yes, Kit's Coty is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear price.
Is there any odour?
Possibly a little. Any smell clears as the sealant cures.
Are you ARBOMaster approved?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Will resealing my frames help with draughts?
Yes, where the draught is at the frame edge. We find where the air is coming from before we reseal.
Do you do commercial work?
Yes, regularly. We can plan bigger jobs in stages.
Can you do upstairs windows?
Yes, if safe access is possible. For high or awkward windows, we will tell you what access is needed.
What affects the cost of window mastic
Jobs vary more than people expect. What affects the quote:
- How many rooms, windows or areas are involved
- Which sealant suits the joint
- The amount of work
- Any working-time requirements on site
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, call 0345 464 0079 or send us an email for an honest opinion and a quote.
Asking for a quote
There’s no need for technical detail. Just tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it’s a home or a business
- Any previous sealing or DIY work
- Access, such as stairs, a lift or height
For a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. We will send you a clear quote before any work starts.
When to call us in Kit's Coty
Older frames were often sealed with products that set hard. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
If you can see any of these, it’s time to have the joints looked at:
- Cracked or shrunken mastic around the frame
- Black, perished sealant on frames
- Draughty joints inside around the window
- Leaking joints at the ends of sills
If you let a flat or house near Aylesford station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Comparing quotes
- What preparation is included
- Whether you can choose the colour
- Whether they’re fully insured
- Whether they seal over old material or remove it
When something else is needed
In fairness, some problems need a different trade:
- Worn gaskets, brush seals or a door that has dropped
- Penetrating damp from a failed cavity tray or render
- Misting between the panes of a double-glazed unit (that needs a new unit)
If in doubt, phone 0345 464 0079 or email us and we will say what we think before booking.
Surfaces we seal
- Patio & French doors
- Timber windows & doors
- Aluminium frames
- Composite doors
- Window sills
- uPVC windows
Window mastic in Kit's Coty: local notes
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Starkey Castle (about 3.4 miles north-west) nearby, there’s older building stock in the area around Kit's Coty as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around St Alban's Church, the joint between an old wall and a newer frame is generally the first place rain gets in. For site and facilities teams at buildings such as Tunbury Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Kit's Coty is about 3 miles south-west of Chatham, in Kent. If you need window mastic in Kit's Coty, it’s easy to get a quote: please phone 0345 464 0079 or email us. We are based in Crawley and cover Kent, Kit's Coty included. Kit's Coty is one of 922 places in Kent where we work. You can also see our page for London, about 29 miles away.
All of ME20 is within our area for window mastic. Whether your property is on Queenswood Road, Russell Road and Beresford Road or anywhere close by, our applicators can take on the job. If you’re just outside Kit's Coty, we cover Blue Bell Hill (1 mile north), Walderslade (1 mile north-east), Lordswood (2 miles north-east), Boxley (2 miles south-east) and Lidsing (3 miles east). Within a short drive, we also cover Maidstone (4 miles south), Sittingbourne (10 miles east), Dartford (15 miles north-west), Sevenoaks (14 miles west), Gravesend (9 miles north-west) and Tonbridge (13 miles south-west).
What’s near Kit's Coty
Around Kit's Coty, our work takes us to homes and buildings near Greenacre Academy, Lower Bell pub and Westfield Wood. For rail, the closest station is Aylesford station, roughly 2.3 miles south-west. Well-known places in the area include Allington Castle (2.1 miles south) and KIMS hospital (3.4 miles south-east). For a walk, there’s Blue Bell Hill and Burham Down.
Surface by surface
Window sills
Every drop off the glass ends up on the sill, so the sill ends and the joint under the frame are vital. Each is cleaned out and resealed.
Composite doors
Front doors take the weather head on, and the top and bottom corners tend to fail first. Those corners get the most care.