Kent · England
Window Mastic in Hearnden Green
Problem with your window and door frames in Hearnden Green? We cut out the old, prepare the joints and apply the right sealant.
- Untidy mastic left by window fitters
- White mastic on grey or black frames
- Mastic that has split away from the wall
How we handle window mastic in Hearnden Green
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. If you have old mastic that has gone black or come away and gaps between the frame and the inside reveal, we can put it right, on aluminium frames, window sills and patio & French doors alike.
In a village or hamlet like Hearnden Green, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
Our work is backed for twelve months, in Hearnden Green and everywhere else we cover.
- Where
- Hearnden Green (TN27)
- Wider area
- Kent
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Patio & French doors
Heavy door frames can move more than windows. The sealant must cope with it, where a rigid one would crack.
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A tidy bead in anthracite grey, black or a matching colour keeps the clean look.
Frames and glazing around Hearnden Green
Historic houses like Leeds Castle (about 4.1 miles north) are a reminder that the area around Hearnden Green has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Headcorn station, renewing tired window mastic between tenants heads off draught and damp complaints.
Hearnden Green is about 6 miles south-east of Maidstone, in Kent. Jobs in Hearnden Green get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. 922 places in Kent are on our list, from the larger towns to small villages. We also work in Crawley, about 35 miles from Hearnden Green.
Postcode districts we cover here for window mastic: TN27. Neighbouring places we cover for window mastic include Headcorn (1 mile south-east), Southernden (2 miles east), Swift's Green (3 miles south-east), Smarden Bell (3 miles south-east) and Lashenden (4 miles south). We also work in nearby towns such as Maidstone (6 miles north-west), Ashford (12 miles east), Sittingbourne (12 miles north-east), Royal Tunbridge Wells (15 miles west), Tonbridge (15 miles west) and Faversham (15 miles north-east).
What’s near Hearnden Green
The nearest railway station is Headcorn station, roughly 1.8 miles south of the centre. Nearby you will also find Sutton Valence Castle (1.7 miles north-west) and Kent Firefighting Museum (3.6 miles south).
Why it’s worth doing now in Hearnden Green
Redecorating is a good moment to renew the mastic. A clean new bead makes new paint or render look finished, and it’s easier while the walls are being worked on anyway. Around Hearnden Green, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, call 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Why Hearnden Green clients choose us
- Rated 4.9 stars on Google
- More than 20 years in sealant work
- Quality sealants from Arbo and Everbuild
- Neat joints and a tidy finish
Read what affects the cost and what customers say.
When it is not the sealant
We will not take on work that will not last, so these are the limits:
- Soft or decayed wood in the frame
- Worn gaskets, brush seals or a door that has dropped
- Damp problems in the wall away from the window
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly before you book.
Surfaces we seal
- uPVC windows
- Aluminium frames
- Window sills
- Timber windows & doors
- Patio & French doors
- Composite doors
Towns and villages near Hearnden Green
What else we do in Hearnden Green
Landlord and commercial work in Hearnden Green
In hotels, rooms out of use cost money, 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.
FAQs for Hearnden Green
Can you do window mastic in Hearnden Green?
Yes. Our work covers London and the South East, and Hearnden Green is part of that. You can call 0345 464 0079 or email us and let us know what needs doing, and we’ll give you a clear quote.
Will you come out to Hearnden Green?
Yes. Hearnden Green is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you seal the gap between the frame and the plaster indoors?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We can do either or both.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover Hearnden Green, along with the rest of our area.
How much does window mastic cost in Hearnden Green?
Size, access and the old material all affect the cost. Ask us for a quote.
How long will my window job take?
That depends on the number of frames, how they’re reached and the state of the old mastic. We will tell you how long your job needs when we quote.
Can tenants book the work?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
Can you reach windows above the ground floor?
Yes, as long as they can be reached safely. Let us know about access when you ask for a quote so we can plan the job.
How the visit works
The work is kept neat and contained to the joints we are treating, so you can carry on as normal. Expect the work to take anything from an hour or two to a full day, depending on how many frames there are, and we explain the cure time before we leave. Somewhere like Hearnden Green 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 go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, ring 0345 464 0079 or email us.
Related advice
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
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.
Common problems we fix in Hearnden Green
Frames are never completely still. Sun on a frame makes it expand, and it contracts again overnight, while the masonry beside it stays put. A sealant that cannot keep up eventually tears.
Most people get in touch after spotting something like this:
- Untidy mastic left by window fitters
- Damp patches on the reveal after heavy rain
- A bead that doesn’t match the frame
- Old mastic that has gone black or come away
Historic houses such as Leeds Castle, about 4.1 miles north, show how far back building around Hearnden Green goes, and older homes nearby need a sealant that suits their walls.
What to look for in a quote
- Whether they’re fully insured
- What the quote includes, VAT included or not
- How much experience the applicator has
- Whether the sealant suits the joint