Kent · England
Window Mastic in Biddenden Green
Mastic around window and door frames, sills and patio doors for Biddenden Green, backed by a 12-month guarantee. Call for a quick quote.
- Mastic that is falling out in pieces
- Cold air getting in at the frame edge
- Gaps between the frame and the inside reveal
What sealant work can’t fix
We won’t take on work that will not last, so here’s what sealant can’t put right:
- Condensation trapped between the panes
- Faulty window hardware
- Penetrating damp from a failed cavity tray or render
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer.
Surfaces we seal
- Window sills
- Composite doors
- Patio & French doors
- Timber windows & doors
- uPVC windows
- Aluminium frames
Window mastic for homes and businesses in Biddenden Green
Behind a thin line of old mastic there’s sometimes a deep void. Packing it solid with sealant gives a joint that can’t flex, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. We work on uPVC windows, timber windows & doors and composite doors, and the jobs we see most are a bead that doesn’t match the frame and cracked sealant at the sill ends.
Somewhere as small as Biddenden Green, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Biddenden Green (TN27)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What window mastic looks like in Biddenden Green
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Smarden Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. If you live in an older home near Church of St Michael, the joint between an old wall and a newer frame is generally the first place rain gets in.
Biddenden Green is about 7 miles west of Ashford, in Kent. Whether you’re in the middle of Biddenden Green or further out, we cover window mastic for every kind of property. 922 places in Kent are on our list, from the larger towns to small villages. You can also see our page for Crawley, about 39 miles away.
Every address in TN27 is covered for window mastic. Whether your property is on Lewd Lane and Pluckley Road or anywhere close by, we can help. If you are just outside Biddenden Green, we cover Smarden (1 mile south-west), Smarden Bell (1 mile west), Swift's Green (1 mile north-west), Monk's Hill (2 miles south-west) and Southernden (2 miles north-west). Further out, we also cover Maidstone (11 miles north-west), Ashford (7 miles east), Sittingbourne (13 miles north), Faversham (14 miles north-east), Kings Hill (15 miles north-west) and Davington (14 miles north-east).
Local landmarks in Biddenden Green
We work in homes and buildings around The Chequers Inn and the streets around them. The closest station to Biddenden Green is Pluckley station, roughly 2.1 miles east. A little further out are Kent Firefighting Museum (3.8 miles west) and Benenden Hospital (5.9 miles south-west).
Towns and villages near Biddenden Green
More services for Biddenden Green
What the job involves on each surface
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We’ll tell you which suits your home.
Window sills
Sills catch the water running down the glass, so the joints at each end and underneath matter. They’re cut out and resealed with exterior sealant.
How to look after the new joints
After the cure time, these simple habits help:
- Don’t paint over the silicone
- Keep paint and stain on wooden frames in good order
- Walk round the house once a year and look at the joints
- Do not aim a pressure washer at the joints
On timber frames, keep the paintwork in good order, since wood that gets wet swells and shrinks more. Paint up to the joint, not over the silicone.
A failed joint lets water into the wall a little at a time. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.
Should I try it myself first?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Do you need window mastic in Biddenden Green?
Joint shape matters as much as the product. A thin smear across a wide gap has nothing to it, and a gap filled solid can’t flex. Backing rod sets the right depth.
Common reasons people contact us are:
- Cold air getting in at the frame edge
- Black, perished sealant on frames
- Damp patches on the reveal after heavy rain
- A bead that does not match the frame
For landlords with property near Pluckley station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Comparing quotes
- How much experience the applicator has
- Is the old sealant removed completely?
- Whether VAT is included
- How long the guarantee is
For landlords and businesses
Landlords and letting agents in Biddenden Green can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
For anyone letting property in or around Biddenden Green, several properties can be quoted together. Just tell us the addresses and what each one needs.
Biddenden Green: your questions answered
Is Biddenden Green 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.
Do you work for landlords with property near Pluckley station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Where is Mr Mastic based?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Can I paint over the new sealant?
Most silicone cannot be painted. Let us know beforehand, and we will use a paintable product where it suits.
Is the work guaranteed?
Yes. Each job is covered for 12 months.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Can you get sealant to suit coloured frames?
Yes, in most cases. Tell us the frame colour when you get in touch and we’ll use the nearest match.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
How the visit works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The work itself takes anything from an hour or two to a full day, depending on how many frames there are from start to finish. Somewhere like Biddenden Green 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.
- We remove the old mastic and clean the frame edge and wall.
- 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.
Preparing for the visit
- Let us know about parking restrictions
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
Getting a quote
Getting a quote is simple: tell us what needs doing and where. A few photos by email make the job easier to understand, and we will come back to you with a quote.