Kent · England
Hareplain Window Mastic
Our applicators work in Hareplain on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Rain getting in at the frame or under the sill
- Black, perished sealant on frames
- Cracked or shrunken mastic around the frame
Why deal with it now?
A cracked joint around a frame lets rain into the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. Around Hareplain, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why book with us
- Approved under the ARBOMaster scheme
- 12-month guarantee on every job
- Anti-fungal sanitary silicone in wet areas
- Domestic, commercial and hotel work
Take a look at how sealant jobs are priced and what customers say.
Window mastic in Hareplain
Every window and door frame has a gap around it, and mastic is what closes it. 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 are dealing with gaps between the frame and the inside reveal and sealant in the wrong colour for the frame, we can put it right.
Somewhere as small as Hareplain, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Place
- Hareplain (TN27)
- Region
- Kent
- Cover
- One year on every job
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Nearby places to Hareplain
What else we do in Hareplain
What we can’t put right
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- A door that needs adjusting, rehanging or new seals
- Damp problems in the wall away from the window
- Rotten timber, which needs a joiner first
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Where we work in Hareplain
- Window sills
- Timber windows & doors
- uPVC windows
- Patio & French doors
- Aluminium frames
- Composite doors
Do you need window mastic in Hareplain?
Joints that are too thin or too deep fail early. A thin smear across a wide gap has nothing to it, and a gap filled solid cannot flex. That’s what backing rod is for.
Most people get in touch after spotting something like this:
- Untidy mastic left by window fitters
- Cold air getting in at the frame edge
- Gaps between the frame and the inside reveal
- Hard, cracked sealant around windows
In and around Hareplain, as anywhere, good window mastic starts with a clean, dry, properly prepared joint.
What your quote should include
- What guarantee comes with the work
- What happens if the job turns out different
- Who turns up on the day
- Is the old sealant removed completely?
What window mastic looks like in Hareplain
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Headcorn station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Hareplain is about 10 miles south of Maidstone, in Kent. For window mastic in and around Hareplain, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We’re based in Crawley and cover Kent, Hareplain included. Across Kent, we cover 922 places, Hareplain among them. There’s also a page for Crawley, about 35 miles away.
We work across the TN27 postcode area for window mastic. Other places close to Hareplain include Three Chimneys (1 mile south-west), Biddenden (1 mile south-east), Curteis' Corner (1 mile east), Lashenden (2 miles north-east) and Standen (2 miles east). Within a short drive, we also cover Maidstone (10 miles north), Ashford (11 miles east), Royal Tunbridge Wells (15 miles west), Tonbridge (15 miles west), Kings Hill (14 miles north-west) and Foley Park (11 miles north).
Landmarks near Hareplain
Locally, jobs take us to homes and businesses close to Three Chimneys Public House and the streets around them. The closest station to Hareplain is Headcorn station, roughly 2.8 miles north of the centre. Other landmarks nearby include Kent Firefighting Museum (0.8 miles north) and Sissinghurst Castle (1.7 miles south-west).
Keeping the joints in good condition
After the cure time, these simple habits help:
- Air rooms to keep condensation down around windows
- Repaint timber before it’s bare
- Do not use solvent cleaners on the joint
- Make sure the drainage slots aren’t blocked
Silicone can’t normally be painted, so mention any painting plans before any work starts. There are paintable sealants for joints that need it.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so it pays to reseal before that happens.
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
What affects the cost of window mastic
You will get a clear quote before work begins. It takes into account:
- The number and length of the joints
- Working hours on commercial sites
- Whether old sealant or filler has to be cut out
- The product the joint needs
Commercial jobs are quoted on the same basis as homes: 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 go through it with you.
Asking for a quote
When you contact us, it’s useful to know:
- Any access issues, like height or stairs
- Whether it has been sealed before
- Where the job is, and your postcode
- How many joints, rooms or windows are involved
We quote each job on its own, so start by telling us what you need. Just phone 0345 464 0079 or email us with the details, and photos are welcome.
What happens on the day
We bring everything the job needs with us, so you don’t need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. It normally takes a few hours for a few frames, or a day or more for a whole house. In a small place like Hareplain, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Every joint is checked before we leave.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Mention any leaks or damp you’ve noticed
- Move anything stored near the joints
How to get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
Related advice
Questions from Hareplain
Can you do window mastic in Hareplain?
Yes, Hareplain is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear quote.
I let a flat near Headcorn station. Can you help?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Do you seal inside as well as outside?
Yes. Indoors, we seal between the frame and the plaster or reveal.
Where are you based?
Our base is Crawley. Our area covers South East England, London and Scotland.
Is it messy?
We keep the work tidy. Nearby surfaces are protected.
Can I add another job to the visit?
Of course. Doing several areas at once is usually more efficient, so mention them when you ask for a quote.
Can you do upstairs windows?
Yes, in most cases. We plan safe access before the job.
Will resealing my frames help with draughts?
In many cases. The gap between frame and wall is a common source of draughts, and sealing the inside and outside joints closes that path.