Kent · England
Window & door mastic in Kings Hill, Kent
Window and door frames in Kings Hill need attention? We remove the old material, prepare the joints and seal them properly.
- Old mastic that has gone black or come away
- Leaking joints at the ends of sills
- Damp patches on the reveal after heavy rain
Window mastic for homes and businesses in Kings Hill
Frames and walls do not move together. Heat and cold make frames grow and shrink against brick or render that hardly moves. So the sealant has to stretch and recover, which is why we use a low-modulus product. We are often asked to deal with old mastic that has gone black or come away and damp patches on the reveal after heavy rain, across uPVC windows, patio & French doors and composite doors.
Around Kings Hill, conservatories, garden rooms and patio doors are often part of the house. Their glazing joints and frame seals are as much a part of the job as the windows.
A 12-month guarantee comes as standard, so you’re not left on your own once the job is done.
- Location
- Kings Hill (ME19)
- Region
- Kent
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
When it is not the sealant
Before you book, it’s worth knowing the limits too:
- A sash or casement that won’t close properly
- Damp problems in the wall away from the window
- Soft or decayed wood in the frame
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer.
What we seal
- Patio & French doors
- uPVC windows
- Window sills
- Timber windows & doors
- Composite doors
- Aluminium frames
Why it’s worth doing now in Kings Hill
The work is quick compared with the damage it prevents: it takes most of a day for a typical house, less for a few frames. Wait for damp to appear and there may be plaster and decorating to sort out too. In an older home around Kings Hill, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, phone 0345 464 0079 or email us for an honest opinion and a quote.
Why Kings Hill customers choose us
- 20+ years of sealant experience
- Approved under the ARBOMaster scheme
- Neat joints and a tidy finish
- You choose the colour before work begins
Read our cost guide and customer reviews.
For landlords and businesses
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Quotes for window mastic in Kings Hill
There’s no set price list, because no two jobs are the same. The quote depends on:
- How much old sealant there is and how hard it is to remove
- How many areas need sealing
- When we can work, for business premises
- How much there is to do
The cost depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
Helping us quote
To make quoting easier, let us know:
- Any access issues, like height or stairs
- Where the job is, and your postcode
- The problem you’ve noticed
- How many joints, rooms or windows are involved
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. We will give you a clear quote before any work starts.
How to look after the new joints
So the new joints stay in good condition:
- Repaint timber before it’s bare
- Keep drainage slots and sill grooves clear
- Avoid harsh chemicals near the mastic
- Look round the frames every year or so
Timber frames need their paint kept up, since wood that gets wet swells and shrinks more. Keep paint off the silicone itself.
Wet, windy weather is when failed mastic shows itself, but resealing works best in dry conditions. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
Windows and doors in Kings Hill
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. With historic houses such as Old Soar Manor (about 3.7 miles west) nearby, there’s older building stock in the area around Kings Hill as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Rented homes near West Malling station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. For an older house near a landmark such as Church of St John the Baptist, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Schools such as Kings Hill School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Kings Hill is about 5 miles west of Maidstone, in Kent. From the centre of Kings Hill to the outskirts, we cover window mastic for every kind of property, from flats and houses to offices and hotels. We cover 922 towns and villages across Kent, from the larger towns to small villages. We also work in London, about 27 miles from Kings Hill.
Our applicators cover all of ME19 for window mastic and the streets around it. You’ll find streets such as Churchill Square, Townsend Square and Ruton Square, all of which we cover. We also cover Well Street (1 mile north-east), Red Hill (1 mile south-east), Wateringbury (1 mile south-east), West Malling (2 miles north) and Nettlestead (2 miles south). Further out, we also cover Maidstone (5 miles east), Sittingbourne (15 miles east), Dartford (14 miles north-west), Sevenoaks (9 miles west), Royal Tunbridge Wells (11 miles south-west) and Gravesend (11 miles north).
Local landmarks in Kings Hill
Locally, jobs take us to homes and businesses close to Manor Park Country Park and The Malling School. Kings Hill’s nearest station is West Malling station, roughly 1.5 miles north-east of the centre. Other landmarks nearby include Maidstone Hospital (3.4 miles east) and Leybourne Castle (2.3 miles north).
Places near Kings Hill
More services for Kings Hill
Kings Hill questions
I let a flat near West Malling station. Can you help?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Is Kings Hill in your area for window mastic?
Yes, Kings Hill is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Will resealing my frames help with draughts?
Yes, where the draught is at the frame edge. We find where the air is coming from before we reseal.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
How long does it take to reseal the windows on a house?
It depends on access, the old mastic and the size of the frames. You’ll know the timing when we quote.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
How it works
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes a few hours for a handful of frames, longer for a whole house, depending on how much there is to do. For a job in Kings Hill, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- Clear items away from the joints we’re working on
- Mention any sign-in or site rules at work premises
- Tell us about any water getting in
How to get a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we will explain what’s involved before giving you a price.
Advice
DIY sealant or a professional job?
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.