Kent · England
Charcott External Mastic
Problem with your movement joints in Charcott? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Joints where the bead has come unstuck
- Damp patches traced to an open external joint
- Panel joints letting water in
Why deal with it now?
Water gets in through a failed movement joint, behind render and cladding. Dealing with it early keeps the repair to the joint, rather than the wall around it. Around Charcott, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, call 0345 464 0079 or email us for an honest opinion and a quote.
Why book with us
- White, clear, grey or coloured to suit, where the product allows
- An ARBOMaster approved applicator
- Sanitary silicone with an anti-fungal additive in wet areas
- Rated 4.9 stars on Google
See our cost guide and our reviews.
External mastic in Charcott
Short cuts in external joints show up within a season or two. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We take the old material out and do it properly. Common call-outs are for old sealant gone brittle and cracked and rain getting behind render or cladding at a joint, across render & cladding joints, copings & trims and concrete & block.
In a village or hamlet like Charcott, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Place
- Charcott (TN11)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
FAQs for Charcott
Can you help a landlord with a rental near Penshurst station?
Yes, we work for landlords and letting agents. 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 Charcott in your area for external mastic?
Yes. We work across London and the South East, and Charcott is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
Can I add another job to the visit?
Yes. Several rooms, windows or areas can go on one quote.
What colours does the sealant come in?
The aim is a neat, even joint in a colour that suits the wall. We will talk through colour options before we start.
Are you insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Is it OK to seal over old sealant?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
When will the joints need doing again?
That varies with the weather the wall faces, how much it moves and the sealant used. Sealant is a maintenance item, so check the joints once a year and reseal when it splits.
Do you use backing rod?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. That way it bonds to the two sides only and can stretch.
Honest limits
We will always be straight with you, so here’s what new sealant won’t do:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Movement that’s more than a sealant joint can take
- Cracked brickwork or render that needs a builder or plasterer
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before you book.
What we seal
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Concrete & block
- Render & cladding joints
- Copings & trims
Towns and villages near Charcott
Also in Charcott
What external mastic looks like in Charcott
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Chiddingstone Castle (about 1.9 miles south-west) nearby, there’s older building stock in the area around Charcott as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
In the older streets around Church of St Luke, the joints between older walls, newer extensions and the roofline need a sealant that can move. If you let a flat or house near Penshurst station, outside joints that have cracked can let damp into a rental, so check them between lets.
Charcott is about 4 miles west of Tonbridge, in Kent. Charcott gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Charcott is one of 922 places in Kent where we work for external mastic. There’s also a page for Crawley, about 17 miles away.
Our applicators cover all of TN11 for external mastic and the streets around it. Other places close to Charcott include Hall's Green (1 mile north), Woodhatch (2 miles north-east), Bough Beech (2 miles west), Sevenoaks Weald (2 miles north) and Goathurst Common (4 miles north-west). Within a short drive, we also cover Sevenoaks (5 miles north), Royal Tunbridge Wells (6 miles south-east), Tonbridge (4 miles east), Swanley (13 miles north), Kings Hill (11 miles north-east) and Paddock Wood (9 miles east).
Local landmarks in Charcott
Locally, jobs take us to homes and businesses close to Chiddingstone Castle Park and Gardens and The Greyhound pub. For rail, the closest station is Penshurst station, about 0.5 miles south-west. A little further out are Chiddingstone Castle (1.9 miles south-west) and Tonbridge Cottage Hospital (4.5 miles south-east). Green spaces nearby include Barden Lake.
How we quote for external mastic
We quote each job individually. This is what makes a difference:
- Mould in or behind the old joints
- Access and height
- Whether old sealant or filler has to be cut out
- The product the joint needs
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll go through it with you.
Asking for a quote
There’s no need for technical detail. Just tell us:
- A few photos by email, if you can
- Any previous sealing or DIY work
- How we’d reach the joints
- The problem you’ve noticed
Every job is quoted individually, so start by telling us what you need. Just call 0345 464 0079 or drop us an email with the details.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, 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, and the work is guaranteed for a year.
How the job changes by surface
Cladding and façade panels
Cladding and façade panels are generally separated by sealed joints. We reseal them with a sealant suited to the panel material.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. That movement goes into the joint, so the sealant in it must stay soft and stretchy.
How it works
When we arrive, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before work begins. Most jobs take a few hours for a handful of joints, longer for a whole elevation. Somewhere like Charcott needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Let us know about parking restrictions
- Mention any sign-in or site rules at work premises
Get a quote
For external mastic in Charcott, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Related advice
Work for landlords, hotels and businesses
For anyone letting property in or around Charcott, several properties can go on one quote. Just tell us the addresses and what each one needs.
We also work for property managers and facilities teams. Several sites can go on one quote, and we’re fully insured.