Kent · England
Highsted Window Mastic
Mastic around window and door frames, sills and patio doors in Highsted, with a one-year guarantee on every job. Ask us for a quote.
- Untidy mastic left by window fitters
- Whistling draughts around closed windows
- Cracked sealant at the sill ends
Highsted questions
Do you work for landlords with property near Sittingbourne station?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll send you a clear quote.
Is Highsted in your area for window mastic?
Yes. We work across London and the South East, and Highsted is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we’ll give you a clear quote.
How long does it take to reseal the windows on a house?
That depends on the number of frames, how they’re reached and the state of the old mastic. You will know the timing when we quote.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Do you have sealant for grey or black windows?
Yes. White, brown, anthracite grey, black and clear sealants are all available, so the joint suits the frame.
Will resealing my frames help with draughts?
If the draught is coming in around the frame, yes. If it’s coming through the window seals, we’ll tell you.
Does the work come with a guarantee?
Yes. Our one-year guarantee covers every job, inside or out.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used.
About our window mastic in Highsted
Whether it’s one leaking patio door or every frame on the house, the work is priced before anything is done. To get one, phone 0345 464 0079 or drop us an email with the number of frames and any access details for window mastic in Highsted. We work on patio & French doors, timber windows & doors and uPVC windows, and the jobs we see most are gaps where the sill meets the wall and black, perished sealant on frames.
Somewhere as small as Highsted, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Highsted (ME9)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
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.
In hotels, rooms out of use cost money, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
When it is not the sealant
New sealant cannot fix everything, and we’ll tell you before work begins. It will not solve:
- Soft or decayed wood in the frame
- Draughts through the window seals rather than the frame
- A failed sealed unit that has misted up
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly before booking.
Where we work in Highsted
- Patio & French doors
- Aluminium frames
- Window sills
- uPVC windows
- Composite doors
- Timber windows & doors
Common problems we fix in Highsted
On timber frames, paint and putty build up around the joint. Old mastic gets painted over and cracks under the paint, and the wood moves with damp as well as heat.
It’s worth asking for a quote if you see:
- Old mastic that has gone black or come away
- Cracked internal joints between frame and plaster
- Hard, cracked sealant around windows
- A bead that doesn’t match the frame
If you live in an older home near Church of St Nicholas, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Before you book anyone
- Whether the sealant suits the joint
- Are they insured?
- Whether all the old sealant comes out first
- How hidden problems are handled
Towns and villages near Highsted
What else we do in Highsted
What the job involves on each surface
uPVC windows
We clean the frame edge carefully so the plastic is not marked, then the sealant goes in between frame and wall and tooled smooth.
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. The threshold and the bottom corners take the most water, so we pay close attention there.
Frames and glazing around Highsted
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Rodmersham School, its window and door frames need their mastic kept sound, just like a home’s. For landlords with property near Sittingbourne station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Highsted is about 2 miles south of Sittingbourne, in Kent. For window mastic in and around Highsted, it’s easy to get a quote: please call 0345 464 0079 or drop us an email. We cover Kent from our Crawley base, Highsted included. Highsted is one of 922 towns and villages in Kent where we work for window mastic. Our Chelmsford page covers work nearby (31 miles or so).
Every address in ME9 is covered for window mastic. We cover properties on Stockers Hill and Highsted Road. Nearby, we also carry out window mastic in Rodmersham Green (1 mile east), Rodmersham (1 mile east), Tunstall (1 mile west), Bapchild (1 mile east) and Dungate (1 mile south). Within a short drive, we also cover Maidstone (10 miles west), Ashford (13 miles south-east), Canterbury (15 miles east), Whitstable (13 miles east), Faversham (6 miles east) and Minster (7 miles north).
Local landmarks in Highsted
In Highsted, that means homes and buildings near Fulston Manor School and Cromers Wood. The nearest railway station is Sittingbourne station, about 1.6 miles north of the centre. Other landmarks nearby include Sittingbourne Heritage Museum (1.4 miles north) and Bayford Court (1.7 miles north).
The process
At the end, we look at the finished work together and tell you how long to leave it. The visit itself generally takes anything from an hour or two to a full day, depending on how many frames there are, depending on how much there is to do. Somewhere as small as Highsted, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- 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.
How to prepare
- On commercial sites, let us know about site rules
- Tell us if parking is tricky
- Mention any tricky access
Ask for a quote
We quote each job on its own, so the first step is telling us about yours. Just call 0345 464 0079 or drop us an email with the details and send photos if you have them.
Related advice
Leave it or put it right?
Resealing frames is a short job: the visit takes a morning for a couple of windows and a door. Wait for damp to appear and there may be plaster and decorating to sort out too. Older cottages and farmhouses around Highsted can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
Why book with us
- More than 20 years in sealant work
- Quality sealants from Arbo and Everbuild
- Fully insured
- 12-month guarantee on every job
Read our cost guide and our reviews.