Kent · England
Window Mastic in Plaxtol
Mastic around window and door frames, sills and patio doors for Plaxtol, backed by a 12-month guarantee. Ask us for a quote.
- Cracked internal joints between frame and plaster
- Cold air getting in at the frame edge
- Sealant in the wrong colour for the frame
Window mastic for homes and businesses in Plaxtol
The new joint does not have to be white. We can seal in white, brown, anthracite grey, black or clear, so the line suits the frame instead of standing out. If you’re dealing with draughts coming in around windows and doors and rain getting in at the frame or under the sill, we can help, whatever the surface.
Mastic can only go onto a dry, clean joint, so window work in Plaxtol is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
You get a one-year guarantee, the same in Plaxtol as everywhere else we work.
- Place
- Plaxtol (TN15)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Honest limits
A few problems are outside what sealant work can do:
- Broken hinges, locks or handles
- A door that needs adjusting, rehanging or new seals
- Damp problems in the wall away from the window
If you are not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
Where we work in Plaxtol
- uPVC windows
- Composite doors
- Patio & French doors
- Aluminium frames
- Window sills
- Timber windows & doors
How to look after the new joints
A little care helps the new joints last. We recommend:
- Wipe condensation off the frames
- Do not paint over the silicone
- Clear any debris from frame drain holes
- Do not use solvent cleaners on the joint
Keep the new mastic undisturbed while it cures, following the cure time we give you. Keep jet washers away from the frames.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
When to call us in Plaxtol
Mastic ages in the weather. Sunlight dries the surface out, until it loses its stretch and starts to crack.
If you can see any of these, it’s time to have the joints looked at:
- Gaps where the sill meets the wall
- Gaps left after new windows were fitted
- Black, perished sealant on frames
- A bead that does not match the frame
Letting a property close to Borough Green & Wrotham station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Comparing quotes
- What guarantee comes with the work
- Whether they seal over old material or remove it
- How long to leave it before use
- Which sealant they’ll use, and why
The process
There’s no need to move everything out, only the area right around the joints. Everything nearby is protected, and the work takes anything from an hour or two to a full day, depending on how many frames there are in most cases. In a small place like Plaxtol, access is usually 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.
- 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.
Getting ready for the visit
- Tell us about any water getting in
- Plan for the work area to be out of bounds to pets and children
- Clear items away from the joints we are working on
Get a quote
If you are in Plaxtol and need window mastic, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Read more
Window mastic in Plaxtol: local notes
Historic houses like Old Soar Manor (about 0.7 miles north-east) are a reminder that the area around Plaxtol has older buildings as well as new. 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 Plaxtol Primary School, larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as Plaxtol Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Plaxtol is about 4 miles north of Tonbridge, in Kent. Every kind of property in Plaxtol can book us for window mastic. The work is guaranteed for a year. 922 places in Kent are on our list, large and small. There’s also a page for London, about 24 miles away.
Every address in TN15 is within our area for window mastic. Streets in the area include The Street, St Hildas and Long Mill Lane, and we cover them all. Neighbouring places we cover for window mastic include Dunk's Green (1 mile south), Roughway (1 mile south-east), Claygate Cross (1 mile north), Crouch (1 mile north) and Basted (1 mile north). We also work in nearby towns such as Maidstone (10 miles east), Dartford (13 miles north), Sevenoaks (5 miles west), Royal Tunbridge Wells (9 miles south), Gravesend (12 miles north) and Tonbridge (4 miles south).
Landmarks near Plaxtol
Around Plaxtol, our work takes us to homes and buildings near The Kentish Rifleman Public House and Ivy Hatch Nature Reserve. The nearest railway station is Borough Green & Wrotham station, roughly 2.4 miles north of the centre. Well-known places in the area include Ightham Court (2.6 miles north) and Sevenoaks Hospital (5.2 miles north-west). Open spaces near Plaxtol include Barden Lake.
Towns and villages near Plaxtol
More services for Plaxtol
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Common questions in Plaxtol
Do you work for landlords with property near Borough Green & Wrotham station?
Yes. We work for landlords and letting agents as well as householders. Just call 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear price.
Is Plaxtol in your area for window mastic?
Yes. We work across London and the South East, and Plaxtol is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job, and we will send you a clear quote.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We will give you the cure time for the product we used.
Do you do commercial work?
Yes, regularly. We can plan bigger jobs in stages.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply phone 0345 464 0079 or drop us an email.
Can you seal the gap between the frame and the plaster indoors?
Yes. Plenty of draughts come through the inside joint as well as the outside, so it can be worth sealing both.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Do you have sealant for grey or black windows?
Yes. We can use white, brown, anthracite grey, black or clear.
What affects the cost of window mastic
Every job gets its own quote. This is what makes a difference:
- Working hours on commercial sites
- Whether the work is at height
- How much old sealant there is and how hard it is to remove
- The number and length of the joints
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, call 0345 464 0079 or email us for an honest opinion and a quote.
Asking for a quote
There’s no need for technical detail. Just tell us:
- Where the job is, and your postcode
- What the problem is, such as mould, gaps, leaks or cracking
- The type of property
- Access, such as stairs, a lift or height
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, and email photos if that’s easy.
Surface by surface
Aluminium frames
Coated aluminium needs a compatible sealant. We use a neutral-cure product.
Timber windows & doors
Timber moves with moisture as well as heat, so a flexible sealant is essential. We seal onto sound, dry paintwork or timber.