Kent · England
Westwell Window Mastic
Window mastic for Westwell and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Mastic that has split away from the wall
- Untidy mastic left by window fitters
- Draughts coming in around windows and doors
Window mastic in Westwell, done properly
A cold draught around a closed window often comes from the frame edge. Resealing that joint can make a room feel noticeably less draughty. Where the air is getting in through the window itself, we’ll say so. If you are dealing with cold air getting in at the frame edge and gaps where the sill meets the wall, we can help, on uPVC windows, patio & French doors and aluminium frames alike.
Somewhere as small as Westwell, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Location
- Westwell (TN25)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Signs you need window mastic in Westwell
Plenty of failed mastic was poorly applied in the first place. Mastic laid onto dusty, damp or crumbling surfaces didn’t grip properly, so it comes away long before its time.
If you can see any of these, it’s time to have the joints looked at:
- Cracked or shrunken mastic around the frame
- Rain getting in at the frame or under the sill
- Gaps between the frame and the inside reveal
- Untidy mastic left by window fitters
Letting a property close to Charing station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
Comparing quotes
- Whether VAT is included
- Whether all the old sealant comes out first
- Whether you can choose the colour
- How much experience the applicator has
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
We also work for property managers and facilities teams in Westwell and across Kent. We can quote a run of properties together, and we’re fully insured.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
How the visit works
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the work takes most of a day for a typical house, less for a few frames for a typical job. Somewhere like Westwell 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.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- 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.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Plan for the work area to be out of bounds to pets and children
- Move anything stored near the joints
Get a quote
To get a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
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Your questions about window mastic in Westwell
Can you help a landlord with a rental near Charing station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Is Westwell in your area for window mastic?
Yes, Westwell is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
Can you reach windows above the ground floor?
Yes, if safe access is possible. Higher or awkward frames may need extra access, and we will confirm what’s needed.
Does the work come with a guarantee?
Yes. All our work carries a 12-month guarantee, and we are fully insured.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
When is the sealant fully cured?
That depends on the sealant used, so please follow the time we give you when we finish.
Where is Mr Mastic based?
We work from Crawley. We cover Westwell and the rest of Kent.
Is it OK to seal over old sealant?
No, it will not last. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
When it is not the sealant
Before you book, it’s worth knowing the limits too:
- A failed sealed unit that has misted up
- Draughts through the window seals rather than the frame
- Damp coming through the wall itself rather than the frame joint
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
Surfaces we seal
- Timber windows & doors
- Window sills
- Composite doors
- Aluminium frames
- Patio & French doors
- uPVC windows
Windows and doors in Westwell
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Godinton House (about 2.3 miles south) nearby, there’s older building stock in the area around Westwell as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Managing a site like The Hayesbrook School? Then larger buildings have plenty of frames, and the mastic around each one ages. If you live in an older home near Church of St Mary, the joint between an old wall and a newer frame is usually the first place rain gets in.
Westwell is about 4 miles north of Ashford, in Kent. Every kind of property in Westwell is covered 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 Chelmsford, about 41 miles away.
Here we cover the TN25 postcode area for window mastic. Neighbouring places we cover for window mastic include Tutt Hill (1 mile south-west), Ram Lane (1 mile west), Potters Corner (1 mile south), Westwell Leacon (2 miles west) and Hothfield (2 miles south-west). Larger places within reach include Maidstone (15 miles west), Ashford (4 miles south), Canterbury (12 miles north-east), Sittingbourne (11 miles north-west), Whitstable (14 miles north-east) and Faversham (9 miles north).
Near you in Westwell
The nearest railway station is Charing station, roughly 2.6 miles north-west of the centre. Nearby you will also find County Square (3.2 miles south) and William Harvey Hospital (4.6 miles south-east).
Aftercare tips
Looking after new joints is easy:
- Clear any debris from frame drain holes
- Repaint timber before it’s bare
- Check the mastic once a year
- Wipe condensation off the frames
Check the drainage slots in the frames aren’t blocked, so rain drains out rather than building up at the sealant.
Look out for the warning signs: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.
Towns and villages near Westwell
Also in Westwell
Leave it or put it right?
Getting a straight, even bead on an outside frame takes practice, especially on upper floors. A professional job is cut out properly, backed where needed and finished neatly, using a product chosen for the frame and wall. In a small place like Westwell, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we will go through it with you.
Why us?
- We leave the area clean and tidy
- One-year guarantee on every job
- Approved under the ARBOMaster scheme
- 20+ years of sealant experience
Read our cost guide or customer reviews.