Kent · England
Window & door mastic in Bossingham, Kent
Mastic around window and door frames, sills and patio doors in Bossingham, with a 12-month guarantee on every job. Ask us for a quote.
- Mastic that is falling out in pieces
- Cracked sealant at the sill ends
- Mastic that has split away from the wall
The process
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it usually takes a few hours for a few frames, or a day or more for a whole house. Somewhere like Bossingham needs a little journey planning: let us know about lanes, gates and parking. 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.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
How to get a quote
Need a quote? Please ring 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
Window mastic in Bossingham
A window frame and the wall around it expand and shrink at different rates. 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 work on uPVC windows, patio & French doors and timber windows & doors, and people most often call us about rain getting in at the frame or under the sill and white mastic on grey or black frames.
Outdoor sealant needs dry, clean surfaces, so work on frames around Bossingham is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or send us an email.
- Where
- Bossingham (CT4)
- Region
- Kent
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of window mastic
For a quick quote, just ask. The main things that affect it are:
- When we can work, for business premises
- Whether old sealant or filler has to be cut out
- Mould in or behind the old joints
- The number and length of the joints
Doing several joints on one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Asking for a quote
Before you ask for a quote, have a think about:
- Where the job is, and your postcode
- Whether it’s a home or a business
- Any previous sealing or DIY work
- Any access issues, like height or stairs
Asking for a quote is easy: let us know the job and the location. A few pictures by email make the job easier to understand.
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Towns and villages near Bossingham
Other services in Bossingham
Common problems we fix in Bossingham
Older frames were often sealed with products that set hard. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
These are the problems we’re asked about most:
- Cracked internal joints between frame and plaster
- Sealant in the wrong colour for the frame
- Cracked or shrunken mastic around the frame
- Leaking joints at the ends of sills
For an older house near a landmark such as Church of St Mary, the joint between an old wall and a newer frame is usually the first place rain gets in.
Questions to ask before booking
- What insurance they hold
- What the quote includes, VAT included or not
- Which colour the sealant will be
- What the cure time is
Window mastic in Bossingham: local notes
With historic houses such as Acrise Place (about 4.9 miles south-east) nearby, there’s older building stock in the area around Bossingham as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as Stelling Minnis Church of England Primary School, larger buildings have plenty of frames, and the mastic around each one ages. Letting a property close to Chartham station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Bossingham is about 6 miles south of Canterbury, in Kent. Whether you are in the middle of Bossingham or further out, we cover window mastic for every kind of property, from flats and houses to offices and hotels. Across Kent, we cover 922 places, and Bossingham is one of them. There’s also a page for Chelmsford, about 45 miles away.
All of CT4 is covered for window mastic, from the main roads to the quietest streets. If you need window mastic at a property on The Street, Bossingham Street and Manns Hill or anywhere close by, we can help. We also cover the places around Bossingham: Stelling Minnis (1 mile south-west), Waltham (2 miles west), Rhodes Minnis (4 miles south), Stowting Common (4 miles south-west) and Ottinge (4 miles south). We also work in nearby towns such as Ashford (10 miles south-west), Canterbury (6 miles north), Dover (10 miles south-east), Folkestone (9 miles south-east), Whitstable (11 miles north) and Deal (14 miles east).
Local landmarks in Bossingham
The closest station to Bossingham is Chartham station, roughly 4.8 miles north-west of the centre. A little further out are Kent and Canterbury Hospital (4.7 miles north).
Landlords, agents and businesses in Bossingham
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
For anyone letting property in or around Bossingham, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
Bossingham questions
Can you do window mastic in Bossingham?
Yes, Bossingham is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
I let a flat near Chartham station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Can you match the sealant to my frames?
Usually, yes. Tell us the frame colour when you get in touch and we will use the nearest match.
Can you quote for more than one area?
Yes, we can. More than one area can go on one quote.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Is it messy?
No. We protect the surfaces around the joints, and we tidy up before we go.
Can I paint over the new sealant?
It depends on the sealant. Some hybrid sealants can be painted; silicone can’t. Tell us if you are decorating and we’ll choose accordingly.
Aftercare tips
So the new joints stay in good condition:
- Paint up to the joint, not over it
- Make sure the drainage slots aren’t blocked
- Walk round the house once a year and look at the joints
- Use gentle cleaners on frames and sealant
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Paint up to the joint, not over the silicone.
On timber windows, water behind the joint can lead to rot. Once wood has rotted, it needs repair before it can be sealed, so early resealing is worth it.
Why act early in Bossingham
The work is quick compared with the damage it prevents: the visit takes a morning for a couple of windows and a door. Leave it until water is coming in and you may need plastering and decorating as well. Older cottages and farmhouses around Bossingham can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, ring 0345 464 0079 or email us for an honest opinion and a quote.
Why choose Mr Mastic in Bossingham
- Any old sealant cut out fully, not covered over
- Rated 4.9 stars on Google
- Fully insured
- One-year guarantee on every job
Read our cost guide and customer reviews.