Kent · England
External & façade joints in Knox Bridge, Kent
External mastic in Knox Bridge from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Panel joints letting water in
- Weeds or debris growing in open joints
- Cracked joints where brick meets render or frames
External mastic in Knox Bridge, done properly
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. We’re often asked to deal with leaking joints around cladding and façade panels and brick movement joints where the sealant has split, across joints between brick and frames, concrete & block and render & cladding joints.
In a village or hamlet like Knox Bridge, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
Each job carries a 12-month guarantee, large or small.
- Location
- Knox Bridge (TN17)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Never let anyone fill a movement joint with mortar
- Walk round the building once a year and look at the joints
- Keep water from gutters off the wall
- Keep soil, plants and ivy away from the joints
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
A joint that has stopped moving pushes the movement elsewhere, often as cracks near the joint. Catch it early and you reduce the risk.
Knox Bridge 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.
In and around Knox Bridge, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Knox Bridge is about 9 miles south of Maidstone, in Kent. Homes, rented property, offices and hotels in Knox Bridge can book us for external mastic. The work is guaranteed for a year. Knox Bridge is one of 922 places in Kent where we work. Our Crawley page covers work nearby (32 miles or so).
All of TN17 is within our area for external mastic. Close by, we work in Cranbrook Common (1 mile south), Frittenden (1 mile east), Sinkhurst Green (2 miles north-east), Sissinghurst (2 miles south) and Staplehurst (2 miles north). Further out, we also cover Maidstone (9 miles north), Ashford (13 miles east), Royal Tunbridge Wells (12 miles west), Tonbridge (13 miles west), Kings Hill (11 miles north-west) and Foley Park (10 miles north).
What’s near Knox Bridge
The nearest railway station is Staplehurst station, about 2.4 miles north. Nearby you will also find Benenden Hospital (4.4 miles south-east) and Sissinghurst Castle (1.9 miles south-east).
Can I do it myself?
If you’ve already had a go yourself, that is fine. We cut it out and start again.
What a professional job adds is preparation and the right 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.
Landlords, agents and businesses in Knox Bridge
We also work for property managers and facilities teams in Knox Bridge and across Kent. Several sites can be quoted together, and we’re fully insured.
We work for landlords and agents as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
What happens on the day
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Knox Bridge, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Preparing for the visit
- Mention if the joints have been sealed before
- For indoor joints, keep the area dry beforehand if you can
- Let us know about parking restrictions
How to get a quote
We quote each job on its own. Just ring 0345 464 0079 or email us with the details.
Advice
Nearby places to Knox Bridge
What else we do in Knox Bridge
Do you need external mastic in Knox Bridge?
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
Most people get in touch when they notice one of these:
- Joints with sealant missing in places
- Water getting into walls through failed joints
- Joints where the bead has come unstuck
- Panel joints letting water in
Letting a property close to Staplehurst station? Then split movement joints are easy to miss on a rental until damp shows inside.
What to look for in a quote
- Who does the work, and how experienced they are
- Are they insured?
- Is VAT in the price?
- What product goes in the joint
Your questions about external mastic in Knox Bridge
Do you cover Knox Bridge for external mastic?
Yes, Knox Bridge is within the area we cover. Our work covers 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 send you a clear quote.
Do you cover smaller places like Knox Bridge?
Yes. Knox Bridge 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.
Are you insured?
Yes. We’re fully insured for every job we do.
How long does the job take?
Typically it takes a few hours to a few days, depending on the length of joint and the access. Larger jobs naturally take longer, and we’ll tell you how long to expect.
Can new sealant go over the old?
No, because it fails. We remove every bit of old sealant first.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference.
Why do you put foam in the joint first?
We fit closed-cell backing rod wherever the joint depth needs controlling. It sets the sealant depth and prevents three-sided bonding, so the joint can move.
When something else is needed
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant won’t put right:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracks in the bricks or render themselves, away from the joints
- Failed render or damaged cladding panels
If you’re not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer.
What we seal
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Concrete & block
- Render & cladding joints
- Façade panels
Different surfaces, different methods
Render joints
Water behind render can lead to blown patches. Resealing the joints early keeps water out and helps it last.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. Where one has been mortared, we cut it out and reseal it with sealant.