Kent · England
External Mastic in Farthing Green
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Farthing Green. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Rigid filler in a joint that should flex
- Weathered mastic that no longer stretches
- Damp patches traced to an open external joint
Why act early in Farthing Green
Mortar or ordinary filler might look like a quick way to close an open joint, but it stops the joint moving. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Older cottages and farmhouses around Farthing Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why Farthing Green customers choose us
- 180+ five-star Google reviews
- Colour agreed with you before we start
- A 12-month guarantee on all work
- We’re fully insured
Take a look at our cost guide and customer reviews.
External mastic for homes and businesses in Farthing Green
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two where a rigid filler would soon crack. We work on render & cladding joints, concrete & block and copings & trims, and people most often call us about joints where the bead has come unstuck and movement joints with cracked, split or missing sealant.
Outside joints can only be sealed when they’re dry, so work in Farthing Green is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
Whatever the size of the job, you get the same 12-month guarantee.
- Location
- Farthing Green (TN12)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Looking after it afterwards
After the cure time, these simple habits help:
- Wash walls gently around the sealant
- Look over the joints every year, ideally after winter
- Tell anyone working on the walls about the movement joints
- Make sure movement joints aren’t pointed over
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
Landlords, agents and businesses in Farthing Green
Letting agents and landlords in Farthing Green can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Nearby places to Farthing Green
More services for Farthing Green
Farthing Green buildings and the weather
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. 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. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Historic houses such as Stoneacre, about 4.4 miles north, show how far back building around Farthing Green goes, and older homes nearby need a sealant that suits their walls. Letting a property close to Staplehurst station? Then split movement joints are easy to miss on a rental until damp shows inside.
Farthing Green is about 6 miles south-east of Maidstone, in Kent. For external mastic in and around Farthing Green, please ring 0345 464 0079 or email us for a quick quote. We cover Kent from our Crawley base. Across Kent, we cover 922 places, Farthing Green among them. Our Crawley page covers work nearby (34 miles or so).
Postcode districts we cover here for external mastic: TN12. Neighbouring places we cover for external mastic 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). Further out, we also cover 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).
Near you in Farthing Green
The nearest railway station is Staplehurst station, about 2.1 miles south-west of the centre. Nearby you’ll also find Brattle Farm Museum (3.4 miles south-west) and Sutton Valence Castle (1.6 miles north).
Can I do it myself?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Common questions in Farthing Green
Is Farthing Green within the area you cover?
Yes. Farthing Green is within the area we cover, which takes in towns, villages and rural addresses. We work across 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 Staplehurst station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear price.
Can you reach joints on upper floors?
It depends on the building. We work on joints that can be reached safely. Tell us about the building and we’ll confirm what access is needed.
Where are you based?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. Then phone 0345 464 0079 or drop us an email.
Do you guarantee your work?
Yes. All our work carries a 12-month guarantee.
When is the sealant fully cured?
It depends on the product and the conditions. Before we leave, we will tell you the cure time.
How often do external joints need resealing?
It depends on the exposure, the movement and the product. Treat it as a maintenance item and look at it yearly and reseal when it splits.
Surface by surface
Render joints
Water behind render can lead to blown patches. Resealing the joints early keeps water out and protects the render itself.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant so the movement is taken up.
Honest limits
It helps to know what we cannot do:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracking across the wall rather than at a joint
- Adding movement joints to masonry that has none
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before booking.
Where we work in Farthing Green
- Joints between brick and frames
- Concrete & block
- Copings & trims
- Render & cladding joints
- Brickwork movement joints
- Façade panels
What we do, step by step
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours to a few days, depending on the length of joint and the access. 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.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Let us know about stairs, lifts or work at height
- Let us know about parking restrictions
- Keep children and pets away from the work area
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.