Kent · England
Tonge Window Mastic
We cover Tonge for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Mastic that’s falling out in pieces
- Mastic that has split away from the wall
- Cracked internal joints between frame and plaster
Questions from Tonge
Will you come out to Tonge?
Yes, Tonge is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Does the coastal weather in Tonge affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Is it messy?
Tidy work is part of the job. We protect what’s around the joints.
Where do you work from?
We are a Crawley-based firm. We work across South East England, London and Scotland.
Do you work for letting agents?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels across Kent.
Does the work come with a guarantee?
Yes. All our work carries a 12-month guarantee, and we are ARBOMaster approved applicators.
Do you seal inside as well as outside?
Yes. Inside, the joint between frame and plaster is sealed neatly.
What should I tell you?
Only a few details: where it is, what you’ve noticed and how we reach it. Then phone 0345 464 0079 or drop us an email.
Window mastic in Tonge
Homes in Tonge have every kind of window: uPVC, aluminium, timber and composite, along with patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. If you are dealing with white mastic on grey or black frames and gaps between the frame and the inside reveal, we can put it right.
Around Tonge, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Tonge (ME9)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
We also work for property managers and facilities teams. We can quote a run of properties together, and we are fully insured.
Window mastic in Tonge: local notes
Tonge is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around window and door frames, especially on the side facing the sea. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Sittingbourne Community College, its window and door frames need their mastic kept sound, just like a home’s. Letting a property close to Teynham station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Tonge is about 2 miles east of Sittingbourne, in Kent. Wherever you are in the ME9 postcode area, we cover window mastic for homes and businesses. Tonge is one of 922 places in Kent we cover for window mastic. Our Chelmsford page covers work nearby, about 30 miles away.
Postcode districts we cover here for window mastic: ME9. Other places close to Tonge include Tonge Corner (1 mile south), Milton Regis (1 mile west), Murston (1 mile south-west), Radfield (1 mile south) and Kemsley (2 miles west). We also work in nearby towns such as Maidstone (12 miles south-west), Ashford (15 miles south), Canterbury (14 miles east), Whitstable (11 miles east), Faversham (5 miles south-east) and Herne Bay (15 miles east).
Local landmarks in Tonge
Locally, jobs take us to homes and businesses close to Milton Creek Country Park, among other places. The nearest railway station is Teynham station, roughly 1.7 miles south-east of the centre. A little further out are Dolphin Sailing Barge Museum (1.6 miles west) and Castle Rough (1.3 miles north-west).
The process
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and clear up. It usually takes anything from an hour or two to a full day, depending on how many frames there are. Somewhere like Tonge needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- Mention any sign-in or site rules at work premises
- Where the joints are inside, avoid wetting them before we arrive
- Keep pets and children clear of the area while we work
Getting a quote
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. We will give you a clear price before any work starts.
Read more
Different surfaces, different methods
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. We cut it out, back any deep gaps and reseal properly.
Window sills
Stone and concrete sills have their own joints, and the joint under the frame can let rain run behind. We seal those with a sealant suited to masonry.
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Don’t aim a pressure washer at the joints
- Wash the frames with mild soapy water
- Keep paint off silicone joints
- Keep solvents and bleach off the sealant
Have a look at the joints once a year, ideally after winter. Small splits are simple to catch before they leak, and if anything looks wrong, just ring 0345 464 0079 or send us an email.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
Nearby places to Tonge
More services for Tonge
What happens if it’s left?
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. Where a wall is exposed, as many are in small places like Tonge, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Doing several joints on one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Why book with us
- We leave the area clean and tidy
- Anti-fungal sanitary silicone in wet areas
- Sealant colour chosen to suit
- Every job guaranteed for a year
Take a look at how sealant jobs are priced and customer reviews.
Do you need window mastic in Tonge?
On timber frames, paint and putty build up around the joint. Old mastic gets painted over and cracks under the paint, and timber moves with moisture as well as temperature.
The problems people normally mention when they call are:
- Damp patches on the reveal after heavy rain
- A bead that doesn’t match the frame
- Gaps between the frame and the inside reveal
- Mastic that is falling out in pieces
If you live in an older home near Church of St Giles, the joint between an old wall and a newer frame is normally the first place rain gets in.
What to look for in a quote
- Whether they’re fully insured
- How hidden problems are handled
- Is VAT in the price?
- Whether they seal over old material or remove it