Kent · England
Window & door mastic in South Stour, Kent
Professional window mastic in and around South Stour, with every bit of old sealant taken out first and a 12-month guarantee.
- Whistling draughts around closed windows
- Mastic that has split away from the wall
- Rushed sealant from a window installation
Different surfaces, different methods
Aluminium frames
Bi-fold and sliding aluminium doors have long frame joints, and the bottom joint sees the most water. We prepare and reseal every joint, backing the deep ones.
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. It comes out, deep gaps get backing rod and the joint is resealed.
Window mastic in South Stour, done properly
Mr Mastic’s applicators have more than 20 years’ experience with window and door sealants. We are ARBOMaster approved and fully insured, and every job is covered by a 12-month guarantee. We are often asked to deal with gaps where the sill meets the wall and gaps between the frame and the inside reveal, on timber windows & doors, window sills and patio & French doors.
Mastic can only go onto a dry, clean joint, so window work in South Stour is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Your job is guaranteed for a year, as with all our work.
- Place
- South Stour (TN25)
- Wider area
- Kent
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
The process
All our tools and materials come with us in the van. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours for a few frames, or a day or more for a whole house. In a small place like South Stour, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- We clear up and check every joint is fully closed.
Before we arrive
- 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 tricky access
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Related advice
Common problems we fix in South Stour
Mastic ages in the weather. UV light hardens the outside of the bead, and over the years it loses its give, cracks and comes away.
The most common problems we see are:
- Sealant in the wrong colour for the frame
- Untidy mastic left by window fitters
- Draughts coming in around windows and doors
- Damp patches on the reveal after heavy rain
Schools such as Finberry Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Before you book anyone
- Are they insured?
- What happens if they find a problem under the old sealant
- How the colour is chosen
- Whether VAT is included
Leave it or put it right?
Failed mastic is not a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that’s needed. If we find failed glass units or worn seals, we will tell you. Older cottages and farmhouses around South Stour can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why us?
- Sanitary silicone with an anti-fungal additive in wet areas
- Arbo and Everbuild products
- 180+ five-star Google reviews
- Colour agreed with you before work begins
Read how sealant jobs are priced and our reviews.
Other services in South Stour
When something else is needed
A few problems are outside what sealant work can do:
- A door that needs adjusting, rehanging or new seals
- A failed sealed unit that has misted up
- Rotten timber, which needs a joiner first
If in doubt, phone 0345 464 0079 or email us and we will say what we think before you book.
Surfaces we seal
- uPVC windows
- Window sills
- Aluminium frames
- Timber windows & doors
- Composite doors
- Patio & French doors
DIY versus a professional finish
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, 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.
FAQs for South Stour
Is South Stour within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you cover South Stour for window mastic?
Yes, South Stour is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or drop us an email and tell us what needs doing.
Can resealing stop a draught around my window?
It will if the frame joint is the problem. We check where the draught is before any work starts.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Can you do several jobs on one visit?
Yes, we can. More than one area can be quoted together.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
How long before the joint can be used?
Most sealants are touch-dry well before they’re fully cured. We’ll give you the cure time for the product we used.
Do you work for hotels and businesses?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
For landlords and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
For anyone letting property in or around South Stour, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
Window mastic in South Stour: local notes
Historic houses like Godinton House (about 4.8 miles north-west) are a reminder that the area around South Stour has older buildings as well as new. 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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Godinton House, about 4.8 miles north-west, is one of the historic houses in the wider area around South Stour, and older homes nearby need a sealant that suits their walls. Rented homes near Ashford International station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
South Stour is about 3 miles south-east of Ashford, in Kent. Every kind of property in South Stour is covered for window mastic, old or new, large or small. The work is guaranteed for a year. South Stour is one of 922 towns and villages in Kent we cover for window mastic. For nearby work, see our Crawley page.
Postcode districts we cover here for window mastic: TN25. We also cover the places around South Stour: Mersham (1 mile north-east), Sevington (2 miles north), Hinxhill Park (2 miles north), Ridgeway (3 miles north-east) and Hinxhill (3 miles north-east). Further out, we also cover Ashford (3 miles north-west), Canterbury (14 miles north-east), Folkestone (11 miles east), Faversham (14 miles north), Hythe (8 miles east) and Davington (15 miles north).
Local landmarks in South Stour
Around South Stour, our work takes us to homes and buildings near Poulton Wood. The closest station to South Stour is Ashford International station, roughly 2.8 miles north-west. Other landmarks nearby include William Harvey Hospital (2.4 miles north) and Ashford Designer Outlet (2.3 miles north-west). Not far away are Hatch Park.