Kent · England
Thurnham Window Mastic
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Thurnham. Fully insured, ARBOMaster approved and guaranteed for a year.
- Whistling draughts around closed windows
- Mastic that has split away from the wall
- Gaps where the sill meets the wall
How the job changes by surface
Patio & French doors
Patio and French doors have the longest joints on most houses. Most leaks start at the bottom corners, so we pay close attention there.
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A tidy bead in anthracite grey, black or a matching colour suits the frame.
Window mastic in Thurnham, done properly
Frames and walls do not move together. Heat and cold make frames grow and shrink against brick or render that hardly moves. That’s why the joint needs a flexible, low-modulus sealant rather than something rigid. Typical jobs include rain getting in at the frame or under the sill and draughty joints inside around the window, on uPVC windows, timber windows & doors and window sills.
In a village or hamlet like Thurnham, older cottages and farmhouses often have timber windows set in stone or brick. 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 are not left on your own once the job is done.
- Where
- Thurnham (ME14)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Towns and villages near Thurnham
Other services in Thurnham
Landlord and commercial work in Thurnham
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Thurnham questions
Do you work for landlords with property near Bearsted station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.
Is Thurnham within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can new window sealant be painted?
Not if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
Will resealing my frames help with draughts?
Yes, if the air is getting in around the frame. If it’s through the window’s own seals or a hinge, that’s a different fix, and we will say so.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Ventilation helps.
Do I need to be at home?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Is it messy?
Not at all. The area is protected while we work and cleaned up afterwards.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Should I try it myself first?
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.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
How we quote for window mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The old material and how stubborn it is
- The number of rooms or windows
- Access and height
- Working hours on commercial sites
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, ring 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
- The address or postcode of the job
- Roughly how big the job is
Every job is quoted individually. Just call 0345 464 0079 or drop us an email with the details.
The process
We keep the work tidy and contained to the area we are working on, so you can get on with your day. The job usually takes a few hours for a few frames, or a day or more for a whole house, and we explain the cure time before we leave. For a village or hamlet like Thurnham, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We check how each frame can be reached safely.
- All the failed sealant is cut away.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us if parking is tricky
Get a quote
For window mastic in Thurnham, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Related advice
Do you need window mastic in Thurnham?
Water runs down the glass onto the sill, so the sill ends and the joint below the frame are common leak points. When that sealant fails, water gets into the wall or under the frame.
It’s worth asking for a quote if you see:
- Draughts coming in around windows and doors
- Rushed sealant from a window installation
- Cracked sealant at the sill ends
- Rain getting in at the frame or under the sill
Managing a site like Valley Park School? Then its window and door frames need their mastic kept sound, just like a home’s.
Before booking anyone
- Whether all the old sealant comes out first
- The length of the guarantee
- What product goes in the joint
- What the cure time is
What sealant work can’t fix
Before you book, it’s worth knowing the limits too:
- Faulty window hardware
- Condensation trapped between the panes
- Soft or decayed wood in the frame
If in doubt, phone 0345 464 0079 or email us and we will say what we think before booking.
What we seal
- Window sills
- Aluminium frames
- uPVC windows
- Timber windows & doors
- Patio & French doors
- Composite doors
Frames and glazing around Thurnham
Historic houses like Stoneacre (about 2.6 miles south) are a reminder that the area around Thurnham 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. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to St Mary the Virgin Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Letting a property close to Bearsted station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
Thurnham is about 3 miles north-east of Maidstone, in Kent. Whether you’re in the middle of Thurnham or further out, window mastic is available for homes and businesses alike. Our area takes in 922 places across Kent. You can also see our page for Chelmsford, roughly 31 miles from Thurnham.
Postcode districts we cover here for window mastic: ME14. That includes homes and businesses on Thurnham Lane, Aldington Lane and Pilgrims Way and the roads around them. If you’re just outside Thurnham, we cover Detling (1 mile north-west), Bearsted (1 mile south-west), Weavering (2 miles south-west), Grove Green (2 miles west) and Harbourland (2 miles west). We also work in nearby towns such as Maidstone (3 miles south-west), Sittingbourne (7 miles north-east), Gravesend (13 miles north-west), Tonbridge (15 miles south-west), Faversham (13 miles east) and Northfleet (14 miles north-west).
What’s near Thurnham
Locally, jobs take us to homes and businesses close to White Horse Wood and Black Horse Public House, among other places. The closest station to Thurnham is Bearsted station, about 1.1 miles south-west of the centre. Well-known places in the area include Allington Castle (3.3 miles west) and KIMS hospital (1.4 miles west). For a walk, there’s Detling Hill.