Kent · England
Tonbridge External Mastic
Our applicators work in Tonbridge on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Movement joints filled with mortar instead of sealant
- Leaking joints around cladding and façade panels
- Plants rooting in failed movement joints
External mastic in Tonbridge
Ground-floor and low-level joints are straightforward to reach. Where joints are higher up, tell us about the building when you get in touch and we will confirm what’s needed to reach them safely. We work on concrete & block, render & cladding joints and joints between brick and frames, and the jobs we see most are leaking joints around cladding and façade panels and failed seals between different materials.
Plenty of homes in a town like Tonbridge have been extended, and the joint where new wall meets old is a classic place for water to get in. Getting the joint depth right matters as much as the sealant itself.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Location
- Tonbridge (TN9, TN10, TN11)
- Region
- Kent
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two so neither cracks the other.
Cladding and façade panels
If the façade has a specified sealant, that’s what we use, or one the system allows. Send us any details you have about the façade.
Tonbridge questions
Do you work for landlords with property near Tonbridge station?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Can you do external mastic in Tonbridge?
Yes, Tonbridge is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear price.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint.
How often do external joints need resealing?
It varies with how exposed the wall is and how much the joint moves. Signs to watch for are cracking, hardening and gaps at the edges.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Why is there a gap in my brick wall?
Walls move with heat, cold and moisture, so long walls have planned gaps to take that movement. The gap is sealed with a flexible sealant over backing rod.
Can you match the colour of my brickwork?
We choose a sealant colour to suit the brick, stone or render so the joint blends in. There’s a wide choice of exterior colours.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We’ll tell you what we’re using and why.
Work for landlords, hotels and businesses
Landlords and agents in Tonbridge can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
Quotes for external mastic in Tonbridge
Jobs vary more than people expect. What affects the quote:
- The number of rooms or windows
- Working hours on commercial sites
- Whether there’s mould to deal with
- The type of sealant required
No two jobs are quite the same, so we quote each one individually. 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.
Helping us quote
Before you ask for a quote, have a think about:
- The address or postcode of the job
- If someone has resealed it before
- The rough size of the job
- Access, such as stairs, a lift or height
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or email us.
What happens on the day
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take anything from a few hours to several days, depending on the building. For a job in Tonbridge, we need access to where the work is and somewhere nearby to park. If the job is outside, mention gates, side access and anything above ground floor.
- 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.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Move anything stored near the joints
- Keep children and pets away from the work area
- Mention any tricky access
Ask for a quote
Need a quote? Please ring 0345 464 0079 or email us with a few details. We will explain what we’d do and give you a clear quote before any work starts.
Advice
Why deal with it now?
Sealing over the top of old mastic does not hold for long. The new layer can’t bond properly to old, weathered material, so the old joint is cut out fully first. Draughts from a gap round a frame, damp under a sill or water behind a bath panel all start small, and early is when they’re cheapest and quickest to sort.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
What you get with us
- Over 20 years’ experience
- Sanitary silicone with an anti-fungal additive in wet areas
- 4.9 on Google from 180+ five-star reviews
- We are fully insured
Read our cost guide and customer reviews.
Outside joints around Tonbridge
With historic houses such as Ightham Mote (about 4.1 miles north) nearby, there’s older building stock in the area around Tonbridge as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. 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.
For landlords with property near Tonbridge station, split movement joints are easy to miss on a rental until damp shows inside. If you live in an older home near Church of St Peter and St Paul, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Tonbridge is about 12 miles south-west of Maidstone, in Kent. Homes, rented property, offices and hotels in Tonbridge can book us for external mastic. Every job comes with our one-year guarantee. Across Kent, we cover 922 places, and Tonbridge is one of them. Crawley is on our list too, about 21 miles from Tonbridge.
Our applicators cover all of the TN9, TN10 and TN11 postcode area for external mastic. Whether your property is on High Street, Old London Road and London Road or anywhere close by, we can help. Tonbridge sits on or near the A26 and A227, which makes travel easy. Other places close to Tonbridge include Lower Haysden (2 miles south-west), Leigh (3 miles west), Bidborough (3 miles south-west), Southborough (3 miles south) and Printstile (3 miles south-west). Within a short drive, we also cover Maidstone (12 miles north-east), Sevenoaks (7 miles north-west), Royal Tunbridge Wells (4 miles south), Swanley (14 miles north), Kings Hill (7 miles north-east) and Foley Park (12 miles north-east).
Near you in Tonbridge
Typical jobs here are in homes near Haysden Country Park, Royal Rise Primary School and Hillview School for Girls, among other places. Tonbridge’s nearest station is Tonbridge station, roughly 0.6 miles south-west. Other landmarks nearby include The Milne Museum (less than half a mile west) and Tonbridge Castle (under half a mile south-west). For a walk, there’s Tudeley Woods RSPB reserve and Barden Lake.
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. Our tips:
- Have failed joints looked at early
- Show decorators and builders where the movement joints are
- Look over the joints every year, ideally after winter
- Keep high-pressure jets off the joints
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
A joint that has stopped moving pushes the movement elsewhere, often as cracks near the joint. Resealing it early helps prevent that.
Places near Tonbridge
What else we do in Tonbridge
What we’re called out for in Tonbridge
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, so it pulls away from the edges.
People usually contact us after spotting something like this:
- Rain getting behind render or cladding at a joint
- Weathered mastic that no longer stretches
- Weeds or debris growing in open joints
- Joints where the bead has come unstuck
Schools such as New Beacon School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
What your quote should include
- How long the guarantee is
- Which colour the sealant will be
- Whether all the old sealant comes out first
- Who turns up on the day