Kent · England
Farthing Green Window Mastic
Mastic around window and door frames, sills and patio doors in Farthing Green, with a 12-month guarantee on every job. Ask us for a quote.
- Cold air getting in at the frame edge
- Cracked internal joints between frame and plaster
- Gaps left after new windows were fitted
Window mastic in Farthing Green
A window frame and the wall around it expand and shrink at different rates. Heat and cold make frames grow and shrink against brick or render that hardly moves. So the sealant has to stretch and recover, which is why we use a low-modulus product. We work on aluminium frames, composite doors and patio & French doors, and people most often call us about hard, cracked sealant around windows and gaps between the frame and the inside reveal.
Somewhere as small as Farthing Green, 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.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Place
- Farthing Green (TN12)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What we do, step by step
We keep the work tidy and contained to the area we are working on, so you can get on with your day. Expect the work to take a few hours for a few frames, or a day or more for a whole house, and we tell you how long to leave it before we go. For a village or hamlet like Farthing Green, 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.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any previous sealing or DIY attempts
- Clear the area around the work
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, phone 0345 464 0079 or drop us an email.
Advice
Surface by surface
uPVC windows
The frame is cleaned with a product that won’t harm the plastic, then the new bead is laid against the frame and the wall.
Patio & French doors
Not every patio door leak is a mastic problem: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We check before we reseal.
Should I try it myself first?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Common questions in Farthing Green
Can you do window mastic in Farthing Green?
Yes, Farthing Green is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Is Farthing 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.
Can resealing stop a draught around my window?
Often, yes. The gap between frame and wall is a common source of draughts, and sealing the inside and outside joints closes that path.
What should I tell you?
Tell us what needs doing and where, plus photos if you have them. If we need more, we’ll ask.
Will it make a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we’re done.
How long before the joint can be used?
Different products cure at different speeds, so follow the cure time we give you.
Where do you work from?
We work from Crawley. We cover Farthing Green and the rest of Kent, along with the rest of our area.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
What window mastic looks like in Farthing Green
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Stoneacre (about 4.4 miles north) are a reminder that the area around Farthing Green has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Historic houses such as Stoneacre, about 4.4 miles north, show how far back building around Farthing Green goes.
Farthing Green is about 6 miles south-east of Maidstone, in Kent. Jobs in Farthing Green get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Kent, we cover 922 places, Farthing Green among them. You can also see our page for Crawley, roughly 34 miles from Farthing Green.
Every address in TN12 is covered for window mastic, from the main roads to the quietest streets. Other places close to Farthing Green include Devil's Den (1 mile north-west), Hawkenbury (1 mile south-west), Rabbit's Cross (2 miles west), Cross-at-Hand (2 miles west) and Staplehurst (2 miles south-west). We also work in nearby towns such as Maidstone (6 miles north-west), Ashford (12 miles east), Sittingbourne (12 miles north-east), Royal Tunbridge Wells (14 miles west), Tonbridge (14 miles west) and Faversham (15 miles north-east).
Landmarks near Farthing Green
The nearest railway station is Staplehurst station, about 2.1 miles south-west. A little further out are Brattle Farm Museum (3.4 miles south-west) and Sutton Valence Castle (1.6 miles north).
When to call us in Farthing Green
Frames are never completely still. Sun on a frame makes it expand, and it contracts again overnight, while the brick or render around it hardly moves. If the sealant can’t stretch, it splits.
It’s worth asking for a quote if you see:
- Gaps between the frame and the inside reveal
- Draughts coming in around windows and doors
- Mastic that has split away from the wall
- Rain getting in at the frame or under the sill
If you let a flat or house near Staplehurst station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What to look for in a quote
- Whether VAT is included
- How much experience the applicator has
- Are they insured?
- What happens if the job turns out different
What happens if it’s left?
If you’re painting or rendering, reseal at the same time. Fresh joints finish the job neatly. Where a wall is exposed, as many are in small places like Farthing Green, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first.
Why book with us
- Approved under the ARBOMaster scheme
- Old sealant always removed completely
- 20+ years of sealant experience
- Neat joints and a tidy finish
Take a look at our cost guide and our reviews.
Nearby places to Farthing Green
Other services in Farthing Green
For landlords and businesses
We work for landlords and letting agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
How we quote for window mastic
We do not publish a price list. The quote depends on:
- How many areas need sealing
- Access and height
- Any working-time requirements on site
- How much there is to do
The cost depends on how much there is to do, how hard the old material is to remove and access to the work. We give a clear quote before work begins.
What we need to know
Photos help, but a description is a good start. Please mention:
- The type of property
- If someone has resealed it before
- Pictures of the joints, sent by email
- What the problem is, such as mould, gaps, leaks or cracking
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before we start.