Kent · England
Window & door mastic in Upper Hardres, Kent
Window mastic for Upper Hardres and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Gaps between the frame and the inside reveal
- Water coming in at the bottom corners of a door
- Untidy mastic left by window fitters
How we handle window mastic in Upper Hardres
If you can feel air around a shut window, the gap is often at the frame. Resealing that joint can make a room feel noticeably less draughty. If the draught is through the window seals instead, we will tell you. Typical jobs include damp patches on the reveal after heavy rain and cracked or shrunken mastic around the frame, across aluminium frames, window sills and patio & French doors.
Mastic can only go onto a dry, clean joint, so window work in Upper Hardres is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
All our work is covered by a one-year guarantee.
- Location
- Upper Hardres (CT4)
- Wider area
- Kent
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Leave it or put it right?
Failed mastic is not a reason to replace sound windows. Where the frames are sound, new mastic usually deals with draughts and leaks at the edges. Problems with the glass or gaskets are for a window company, and we’ll say so. Where a wall is exposed, as many are in small places like Upper Hardres, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Why choose Mr Mastic in Upper Hardres
- Trusted Arbo and Everbuild sealants
- Neat joints and a tidy finish
- Every job guaranteed for a year
- Rated 4.9 stars on Google
See our cost guide and what customers say.
Nearby places to Upper Hardres
What else we do in Upper Hardres
Keeping the joints in good condition
Looking after new joints is easy, and it makes a real difference:
- Don’t aim a pressure washer at the joints
- Paint up to the joint, not over it
- Don’t use solvent cleaners on the joint
- Repaint timber before it’s bare
Most silicone sealants won’t take paint, so mention any painting plans before we start. There are paintable sealants for joints that need it.
Look out for the warning signs: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
Frames and glazing around Upper Hardres
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around Church of St Peter and St Paul, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Upper Hardres is about 4 miles south of Canterbury, in Kent. Across the CT4 area, we can carry out window mastic at your property. Across Kent, we cover 922 places, Upper Hardres among them. Our Chelmsford page covers work nearby.
Our applicators cover all of CT4 for window mastic and the streets around it. Streets in the area include Broxhall Road and Hardres Court Road, and we cover them all. Close by, we work in Lynsore Bottom (1 mile south-east), Pett Bottom (1 mile north-east), Lower Hardres (1 mile north), Petham (2 miles west) and Street End (2 miles north). Larger places within reach include Ashford (11 miles south-west), Canterbury (4 miles north), Dover (11 miles south-east), Folkestone (10 miles south), Whitstable (10 miles north) and Deal (13 miles east).
Local landmarks in Upper Hardres
Typical jobs here are in homes near The Duck pub and the streets around them. The nearest railway station is Bekesbourne station, roughly 3.9 miles north-east. Nearby you’ll also find Canterbury Castle (4.1 miles north) and Kent and Canterbury Hospital (3.5 miles north).
Common problems we fix in Upper Hardres
Plenty of failed mastic was poorly applied in the first place. Mastic laid onto dusty, damp or crumbling surfaces never bonded as it should, and it lets go sooner than it should.
The problems people usually mention when they call are:
- Rushed sealant from a window installation
- Mastic that’s falling out in pieces
- Whistling draughts around closed windows
- Rain getting in at the frame or under the sill
If you let a flat or house near Bekesbourne station, renewing tired window mastic between tenants heads off draught and damp complaints.
What to look for in a quote
- Whether they seal over old material or remove it
- How the colour is chosen
- What happens if the job turns out different
- How long to leave it before use
Your questions about window mastic in Upper Hardres
Will you come out to Upper Hardres?
Yes. Upper Hardres is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Upper Hardres for window mastic?
Yes. We work across London and the South East, and Upper Hardres is part of that. You can phone 0345 464 0079 or email us and tell us what needs doing.
Can new window sealant be painted?
That depends on the product. Some hybrid sealants can be painted; silicone can’t. Tell us if you are decorating and we will choose accordingly.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures.
Does the work come with a guarantee?
Yes. Each job is covered for 12 months, inside or out.
What does window mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote and we will talk you through it.
Can I add another job to the visit?
Of course. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
How the job changes by surface
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. Most leaks start at the bottom corners, so they get particular care.
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match keeps the clean look.
DIY versus a professional finish
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
The process
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes a morning for a couple of windows and a door, and the area is left clean. Somewhere as small as Upper Hardres, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Mention any parking rules near the property
- Mention any leaks or damp you’ve noticed
Getting a quote
To get a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before work begins.
Related advice
How we quote for window mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- How much old sealant there is and how hard it is to remove
- Mould in or behind the old joints
- How much there is to do
- How many areas need sealing
The cost depends on the size of the job, how much old material has to come out and access to the work. You will have a clear quote before any work starts, so you know where you stand.
Asking for a quote
When you contact us, it’s useful to know:
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
- A few pictures by email, if you can
- The type of property
Asking for a quote is easy: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand, and we’ll come back to you with a quote.