Kent · England
Window & door mastic in Claygate, Kent
Window and door frames in Claygate need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Gaps where the sill meets the wall
- Water coming in at the bottom corners of a door
- Untidy mastic left by window fitters
What affects the cost of window mastic
There’s no set price list. The quote depends on:
- The old material and how stubborn it is
- The number of rooms or windows
- Any working-time requirements on site
- Any mould that needs treating
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before any work starts.
Asking for a quote
When you contact us, it’s useful to know:
- The problem you’ve noticed
- The type of property
- The address or postcode of the job
- Roughly how big the job is
Want a quote for window mastic? Please phone 0345 464 0079 or drop us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Window mastic in Claygate, done properly
The new joint doesn’t have to be white. We can seal in white, brown, anthracite grey, black or clear, so the bead blends with the window rather than framing it. Typical jobs include mastic that has split away from the wall and rain getting in at the frame or under the sill, on composite doors, uPVC windows and aluminium frames.
Around Claygate, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
There’s a 12-month guarantee on every job.
- Location
- Claygate (TN12)
- Wider area
- Kent
- Cover
- One year on every job
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Places near Claygate
Also in Claygate
What sealant work cannot fix
Some problems need a builder, plumber or other trade rather than us:
- Damp problems in the wall away from the window
- A failed sealed unit that has misted up
- Broken hinges, locks or handles
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer.
Joints and surfaces we work on
- Window sills
- Patio & French doors
- Aluminium frames
- Composite doors
- uPVC windows
- Timber windows & doors
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
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.
When to call us in Claygate
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.
Keep an eye out for any of the following:
- Draughts coming in around windows and doors
- Draughty joints inside around the window
- Cracked sealant at the sill ends
- Cracked or shrunken mastic around the frame
In the older streets around Church of St Margaret, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Questions to ask before booking
- Is VAT in the price?
- What the cure time is
- Who turns up on the day
- What guarantee comes with the work
How the job changes by surface
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so the joint must stay flexible. We seal onto sound, dry paintwork or timber.
Composite doors
Composite doors are normally hung in an uPVC-type frame, so its perimeter joint is sealed much like a window. The bead is colour-matched to the frame.
The process
The work is kept neat and contained to the joints we are treating, so you can carry on as normal. The job generally takes a few hours for a handful of frames, longer for a whole house, and we tell you how long to leave it before we go. For a village or hamlet like Claygate, 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.
- 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.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
How to prepare
- On commercial sites, let us know about site rules
- Mention any parking rules near the property
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or send us an email.
Read more
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Avoid harsh chemicals near the mastic
- Keep timber frames painted
- Clean frames with a soft cloth and soapy water
- Avoid blasting the frames with a pressure washer
Keep sill grooves and drainage slots clear, so water can run away instead of sitting against the joint.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.
Common questions in Claygate
Can you do window mastic in Claygate?
Yes. We work across London and the South East, and Claygate is part of that. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
Do you cover smaller places like Claygate?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you seal inside as well as outside?
Yes, we do both. Inside, the joint between frame and plaster is sealed neatly, using a paintable sealant if you want to decorate.
I rent my home. Can I book you?
Of course. Ask your landlord first, and we can send them the quote if that helps.
How long will my window job take?
It depends on access, the old mastic and the size of the frames. You’ll know the timing when we quote.
Do you do commercial work?
Yes. We can plan bigger jobs in stages.
Are you ARBOMaster approved?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Is it messy?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Frames and glazing around Claygate
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.
Letting a property close to Marden station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Claygate is about 7 miles south-west of Maidstone, in Kent. From the centre of Claygate to the outskirts, window mastic is available for homes and businesses alike. Our area takes in 922 places across Kent. There’s also a page for Crawley, about 28 miles away.
All of TN12 is covered for window mastic, from the main roads to the quietest streets. Window mastic is available to properties on Sheephurst Lane, Maidstone Road and Spenny Lane. We also cover the places around Claygate: Pearson's Green (1 mile south-west), Marden Beech (2 miles south-east), Marden (2 miles east), Queen Street (2 miles north-west) and Castle Hill (2 miles south-west). We also work in nearby towns such as Maidstone (7 miles north-east), Sevenoaks (14 miles north-west), Royal Tunbridge Wells (8 miles west), Tonbridge (8 miles west), Kings Hill (7 miles north) and Foley Park (8 miles north-east).
Landmarks near Claygate
Around Claygate, our work takes us to homes and buildings near The White Hart pub. For rail, the closest station is Marden station, roughly 1.8 miles east of the centre. Other landmarks nearby include South East Romany Museum (2.7 miles east).