Kent · England
Window & door mastic in Kingsnorth, Kent
Mastic around window and door frames, sills and patio doors for Kingsnorth, backed by a one-year guarantee. Call for a quick quote.
- Cracked internal joints between frame and plaster
- Cracked sealant at the sill ends
- Rain getting in at the frame or under the sill
Signs you need window mastic in Kingsnorth
Timber windows bring their own problems. Mastic painted over many times cracks with the paint, and the wood moves with damp as well as heat.
These are the problems we’re asked about most:
- Gaps left after new windows were fitted
- Rain getting in at the frame or under the sill
- Mastic that has split away from the wall
- Black, perished sealant on frames
Homes close to Church of St Michael include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
What to look for in a quote
- Whether you can choose the colour
- What the cure time is
- What happens if they find a problem under the old sealant
- Are they insured?
Window mastic in Kingsnorth
Some gaps around frames are far deeper than they look. Packing it solid with sealant gives a joint that can’t flex, so deep gaps get backing rod first. That way the new bead bonds to the frame and the wall only. If you are dealing with gaps left after new windows were fitted and a bead that doesn’t match the frame, we can put it right.
Outdoor sealant needs dry, clean surfaces, so work on frames around Kingsnorth is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
We stand behind the work with a one-year guarantee, so you are covered after we’ve gone.
- Place
- Kingsnorth (TN23, TN26)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of window mastic
Jobs vary more than people expect. What affects the quote:
- Any working-time requirements on site
- The product the joint needs
- How much there is to do
- Whether the work is at height
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re not sure whether it needs doing, phone 0345 464 0079 or email us and we’ll give you an honest view and a quote.
What we need to know
There’s no need for technical detail. Just tell us:
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- Pictures of the joints, sent by email
- What the problem is, such as mould, gaps, leaks or cracking
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
The process
The work is kept neat and contained to the area we’re working on. Expect the work to take a few hours for a few frames, or a day or more for a whole house. For a village or hamlet like Kingsnorth, the journey is planned in advance: 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.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Mention any parking rules near the property
- Let us know if you’ve seen damp or leaks
Getting a quote
Asking for a quote is easy: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand, and we’ll take it from there.
Advice
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Use gentle cleaners on frames and sealant
- Keep timber frames painted
- Don’t use solvent cleaners on the joint
- Keep jet washers away from the mastic
Try not to touch the new joint while it cures, following the cure time we give you. Keep jet washers away from the frames.
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 Kingsnorth
A cracked joint around a frame lets rain into the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. In a small place like Kingsnorth, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Why Kingsnorth clients choose us
- Old sealant always removed completely
- Tidy, careful work
- Rated 4.9 stars on Google
- Over 20 years’ experience
Take a look at our cost guide and our reviews.
FAQs for Kingsnorth
Is Kingsnorth in your area for window mastic?
Yes, Kingsnorth is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear price.
Is Kingsnorth within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can I paint over the new sealant?
Silicone generally won’t take paint. Let us know beforehand, and we’ll use a paintable product where it suits.
Is the work guaranteed?
Yes. Our one-year guarantee covers every job, inside or out.
Do you have insurance?
Yes. We are fully insured, and we can confirm the details when we quote.
Can landlords and businesses book you?
Yes. As well as householders, we work for landlords, agents, businesses and hotels in Kingsnorth.
I’m a tenant. Can you help?
Yes. Ask your landlord first, and we can send them the quote if that helps.
Is it OK to seal over old sealant?
No. The old sealant always comes out first.
Should I try it myself first?
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. Everything old must be removed first.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again.
When something else is needed
Before you book, it’s worth knowing the limits:
- Draughts through the window seals rather than the frame
- A sash or casement that won’t close properly
- Soft or decayed wood in the frame
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
What we seal
- Window sills
- Timber windows & doors
- uPVC windows
- Composite doors
- Patio & French doors
- Aluminium frames
Kingsnorth homes and the weather
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 Godinton House (about 3.2 miles north-west) nearby, there’s older building stock in the area around Kingsnorth 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 is traditional sand mastic.
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. If you look after a building such as Kingsnorth Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Kingsnorth is about 2 miles south of Ashford, in Kent. Every kind of property in Kingsnorth can book us for window mastic, old or new, large or small. Every job comes with our one-year guarantee. Kingsnorth is one of 922 towns and villages in Kent where we work for window mastic. There’s also a page for Crawley, about 46 miles away.
We work across the TN23 and TN26 postcode area for window mastic and the streets around it. Streets in the area include Church Hill, South Lea and Ashford Road, and we cover them all. Other places close to Kingsnorth include Park Farm (1 mile north-east), Stubb's Cross (1 mile west), Stanhope (1 mile north), Newtown (1 mile north-east) and Finberry (1 mile east). We also work in nearby towns such as Canterbury (15 miles north-east), Folkestone (13 miles east), Faversham (14 miles north), Hythe (10 miles east), Davington (14 miles north) and Preston (13 miles north).
What’s near Kingsnorth
Around Kingsnorth, our work takes us to homes and buildings near Ashford Green Corridors, John Wallis Academy and Queen's Head Public House and the streets around them. The nearest railway station is Ashford International station, roughly 1.9 miles north. Other landmarks nearby include William Harvey Hospital (2.8 miles north-east) and Ashford Designer Outlet (1.5 miles north-east). Not far away are Orlestone Forest.