Kent · England
Window & door mastic in Great Chart, Kent
Our applicators work in Great Chart 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.
- Mastic that’s falling out in pieces
- Gaps left after new windows were fitted
- Whistling draughts around closed windows
Window mastic in Great Chart, done properly
Around Great Chart we seal all kinds of frames: uPVC, aluminium, timber and composite, plus patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. We work on timber windows & doors, composite doors and aluminium frames, and people most often call us about a bead that doesn’t match the frame and draughty joints inside around the window.
Mastic can only go onto a dry, clean joint, so window work in Great Chart is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Great Chart (TN23)
- Wider area
- Kent
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
FAQs for Great Chart
Will you come out to Great Chart?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you cover Great Chart for window mastic?
Yes. We work across London and the South East, and Great Chart is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Can I paint over the new sealant?
Silicone generally will not take paint. Let us know beforehand, and we’ll use a paintable product where it suits.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
How do I get a quote for window mastic in Great Chart?
It depends on the job, so we quote each one individually. To get one, call 0345 464 0079 or drop us an email and tell us what needs doing and where.
Do you work for letting agents?
Yes, regularly. Several properties can go on one quote.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do you remove the old sealant?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
How we quote for window mastic
We do not publish a price list. The quote depends on:
- How many areas need sealing
- When we can work, for business premises
- Whether old sealant or filler has to be cut out
- Mould in or behind the old joints
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or drop us an email and we will talk you through it.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Access, such as stairs, a lift or height
- A few photos by email, if you can
- If someone has resealed it before
- Roughly how big the job is
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Why deal with it now?
The work is quick compared with the damage it prevents: the visit takes most of a day for a typical house, less for a few frames. Leave it until water is coming in and you may need plastering and decorating as well. Around Great Chart, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
Why us?
- Anti-fungal sanitary silicone in wet areas
- Old sealant always removed completely
- Every job guaranteed for a year
- More than 20 years in sealant work
Take a look at what affects the cost and customer reviews.
What the job involves on each surface
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so the joint needs a low-modulus sealant that stays flexible. White is the usual colour, with brown, anthracite grey and black for coloured frames.
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We can talk through the options.
When something else is needed
To be straight with you, there are a few things sealant won’t fix:
- Worn gaskets, brush seals or a door that has dropped
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Broken hinges, locks or handles
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think before you book.
Where we work in Great Chart
- Window sills
- Aluminium frames
- Composite doors
- Timber windows & doors
- Patio & French doors
- uPVC windows
What happens on the day
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take anything from an hour or two to a full day, depending on how many frames there are. In a small place like Great Chart, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
Getting a quote
To get a quote, phone 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
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Window mastic in Great Chart: local notes
With historic houses such as Godinton House (about 1.1 miles north) nearby, there’s older building stock in the area around Great Chart as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. 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.
If you live in an older home near Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Schools such as Great Chart Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Great Chart is about 1 mile west of Ashford, in Kent. For window mastic in and around Great Chart, please phone 0345 464 0079 or send us an email for a quick quote. We cover Kent from our Crawley base, Great Chart included. Across Kent, we cover 922 places, and Great Chart is one of them. For nearby work, see our Crawley page, about 44 miles away.
Jobs for window mastic in TN23 is quoted and booked the same way as anywhere else. You’ll find streets such as The Street, Toke Close and The Paddocks, and we cover them all. If you’re just outside Great Chart, we cover Godinton (1 mile north-east), Chilmington Green (1 mile south-west), Stanhope (1 mile south-east), Ashford (1 mile east) and Fleeden (1 mile south-west). We also work in nearby towns such as Canterbury (14 miles north-east), Sittingbourne (14 miles north), Folkestone (15 miles east), Faversham (12 miles north), Hythe (12 miles south-east) and Davington (12 miles north).
What’s near Great Chart
Around Great Chart, our work takes us to homes and buildings near The Little Black Dog pub, Ashford Community Woodland and John Wallis Academy and the streets around them. The closest station to Great Chart is Ashford International station, roughly 1.8 miles east of the centre. Nearby you’ll also find County Square (1.6 miles east) and William Harvey Hospital (3.5 miles east). For a walk, there’s Orlestone Forest.
Common problems we fix in Great Chart
A lot of older mastic was never designed to stay flexible. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
These are the problems we are asked about most:
- Cold air getting in at the frame edge
- Mastic that has split away from the wall
- Leaking joints at the ends of sills
- Mastic that is falling out in pieces
Rented homes near Ashford International station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Questions to ask before booking
- What insurance they hold
- What preparation is included
- Which sealant they’ll use, and why
- How hidden problems are handled