Kent · England
Mountain Street Window Mastic
Window mastic for Mountain Street, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cold air getting in at the frame edge
- Draughty joints inside around the window
- Gaps left after new windows were fitted
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Walk round the house once a year and look at the joints
- Avoid harsh chemicals near the mastic
- Air rooms to keep condensation down around windows
- Make sure the drainage slots aren’t blocked
A yearly look round the frames is enough. Small splits are simple to catch before they leak, and if anything looks wrong, just call 0345 464 0079 or send us an email.
Water gets in quietly when mastic fails. You might not see it until plaster blows or a damp patch appears inside. Early resealing stops it reaching that point.
About our window mastic in Mountain Street
From a single sill to a whole house of windows, you will get a clear quote before any work starts. To get one, ring 0345 464 0079 or drop us an email with the number of frames and any access details for window mastic in Mountain Street. We’re often asked to deal with whistling draughts around closed windows and untidy mastic left by window fitters, on timber windows & doors, composite doors and window sills.
In a village or hamlet like Mountain Street, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
All of our work is guaranteed for twelve months.
- Place
- Mountain Street (CT4)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Quotes for window mastic in Mountain Street
We don’t publish a price list. What we look at:
- Any mould that needs treating
- Which sealant suits the joint
- The size of the job
- Whether old sealant or filler has to be cut out
The cost depends on how much there is to do, how hard the old material is to remove and access to the work. We give a clear quote before work begins.
Asking for a quote
Photos by email are helpful but not essential. Try to tell us:
- How we’d reach the joints
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we will come back to you with a quote.
Towns and villages near Mountain Street
What else we do in Mountain Street
What sealant work can’t fix
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Damp problems in the wall away from the window
- A frame that has rotted at the joint
- Broken hinges, locks or handles
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think.
Surfaces we seal
- Composite doors
- Window sills
- Timber windows & doors
- Patio & French doors
- uPVC windows
- Aluminium frames
Your questions about window mastic in Mountain Street
Is Mountain Street in your area for window mastic?
Yes. We work across London and the South East, and Mountain Street is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.
I let a flat near Chilham station. Can you help?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Can you get sealant to suit coloured frames?
Yes. White, brown, anthracite grey, black and clear sealants are all available, so the joint suits the frame.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. We remove it all first.
What does window mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Does someone need to be in?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
Will the old sealant be removed?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
What happens if it’s left?
Redecorating is a good moment to renew the mastic. Fresh joints finish the job neatly. Around Mountain Street, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Leaving a failed joint normally makes the job bigger, not smaller. If you are not sure whether it needs doing, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why Mountain Street customers choose us
- We are fully insured
- Colour agreed with you before any work starts
- More than 20 years in sealant work
- Anti-fungal silicone where joints get wet
Take a look at how sealant jobs are priced and customer reviews.
DIY versus a professional finish
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.
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.
Signs you need window mastic in Mountain Street
Some failures date back to when the windows were fitted. Sealant run over dust, wet brick or loose mortar never bonded as it should, so it comes away long before its time.
Signs it’s time to call us include:
- A bead that doesn’t match the frame
- Draughty joints inside around the window
- Mastic that’s falling out in pieces
- Draughts coming in around windows and doors
Rented homes near Chilham station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints.
Before you book anyone
- What happens if they find a problem under the old sealant
- Whether the sealant suits the joint
- Is VAT in the price?
- Which colour the sealant will be
The process
Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a handful of frames, longer for a whole house. For a village or hamlet like Mountain Street, the journey is planned in advance: 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.
- We check each frame and agree which ones need doing.
- Next the failed sealant is cut away and the joint cleaned.
- Where gaps are deep, backing rod goes in first.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
Getting ready for the visit
- On commercial sites, let us know about site rules
- For indoor joints, keep the area dry beforehand if you can
- Clear the area around the work
Ask for a quote
There’s no standard price list. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.
Read more
What window mastic looks like in Mountain Street
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Mountain Street is about 6 miles south-west of Canterbury, in Kent. We carry out window mastic for homes and businesses in Mountain Street and nearby, as part of our work across Kent. Mountain Street is one of 922 places in Kent we cover. There’s also a page for Chelmsford, about 40 miles away.
Here we cover the CT4 postcode area for window mastic. Neighbouring places we cover for window mastic include Chilham (1 mile north-east), Godmersham (1 mile south), Old Wives Lees (1 mile north), Shottenden (2 miles north-west) and Bilting (2 miles south). Larger places within reach include Ashford (8 miles south-west), Canterbury (6 miles north-east), Sittingbourne (12 miles north-west), Folkestone (14 miles south-east), Whitstable (9 miles north) and Faversham (6 miles north-west).
Near you in Mountain Street
We work in homes and buildings around Woolpack Inn and Broadham Down, among other places. The nearest railway station is Chilham station, roughly 0.8 miles north-east of the centre. Nearby you will also find Kent and Canterbury Hospital (5.7 miles east) and Chilham Castle (under half a mile north).