Kent · England
External & façade joints in Newnham, Kent
Our applicators work in Newnham on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Failed seals between different materials
- Movement joints filled with mortar instead of sealant
- Joints where the bead has come unstuck
External mastic for homes and businesses in Newnham
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. Common call-outs are for joints with sealant missing in places and sealant pulling away from one side of the joint, across copings & trims, joints between brick and frames and concrete & block.
In a village or hamlet like Newnham, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
You are covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or drop us an email.
- Where
- Newnham (ME9)
- Wider area
- Kent
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
When to call us in Newnham
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. The sealant in the movement joints takes that strain.
Most people get in touch after spotting one of these:
- Old sealant gone brittle and cracked
- Joints with sealant missing in places
- Sealant pulling away from one side of the joint
- Water getting into walls through failed joints
In the older streets around Church of St Peter and St Paul, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Before you book anyone
- What guarantee comes with the work
- Whether all the old sealant comes out first
- What the cure time is
- Which sealant they’ll use, and why
What happens if it’s left?
Resealing a run of joints in one go is usually better than patching one at a time. They’ve weathered the same way, and access only has to be arranged once. Around Newnham, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will give you a clear quote for the lot.
Why us?
- A 12-month guarantee on all work
- Fully insured
- Rated 4.9 stars on Google
- More than 20 years in sealant work
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Newnham buildings and the weather
With historic houses such as Belmont House and Gardens (about 2.2 miles south-east) nearby, there’s older building stock in the area around Newnham as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. 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.
Schools such as Eastling Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s. Letting a property close to Teynham station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Newnham is about 4 miles south-west of Faversham, in Kent. For external mastic in and around Newnham, please phone 0345 464 0079 or send us an email for a quick quote. We cover Kent from our Crawley base, Newnham included. Newnham is one of 922 places in Kent where we work for external mastic. Chelmsford is on our list too, around 34 miles away.
We cover every part of the ME9 postcode area for external mastic. Local streets include The Street, Sharsted Hill and Newnham Lane, all of which we cover. Other places close to Newnham include Doddington (1 mile west), Wichling (2 miles west), Bluetown (2 miles west), Hollybushes (3 miles west) and Payden Street (3 miles south-west). We also work in nearby towns such as Maidstone (12 miles west), Ashford (10 miles south), Canterbury (12 miles east), Sittingbourne (5 miles north-west), Whitstable (11 miles north-east) and Faversham (4 miles north-east).
What’s near Newnham
Locally, jobs take us to homes and businesses close to The George Inn and Doddington Place Gardens, among other places. For rail, the closest station is Teynham station, roughly 3.4 miles north of the centre. A little further out are Newnham Castle (within half a mile north-east).
Honest limits
Before you book, it’s worth knowing the limits:
- Cracking across the wall rather than at a joint
- Damp that is not coming from the joint
- Adding movement joints to masonry that has none
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think before booking.
Joints and surfaces we work on
- Façade panels
- Joints between brick and frames
- Copings & trims
- Brickwork movement joints
- Concrete & block
- Render & cladding joints
For landlords and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
Letting agents and landlords in Newnham can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Also near Newnham
Other services in Newnham
The process
The work is kept neat and contained to the joints we are treating, so you can get on with your day. The job generally takes a few hours to a few days, depending on the length of joint and the access, and we explain the cure time before we leave. In a small place like Newnham, access is usually the main thing to plan. 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.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Preparing for the visit
- Clear items away from the joints we are working on
- Let us know about stairs, lifts or work at height
- Plan for the work area to be out of bounds to pets and children
Getting a quote
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we’ll take it from there.
Related advice
Newnham questions
Will you come out to Newnham?
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.
I let a flat near Teynham station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear price.
Do you work at height?
That depends on the building and the joints. Where joints can be reached safely, we will do them. Give us some details and we will confirm the access.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What colours does the sealant come in?
We aim for a joint that suits the wall rather than one that jumps out. Colour is agreed with you before we begin, matched as closely as the range allows.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Will you leave a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Never let anyone fill a movement joint with mortar
- Get split or bare joints resealed while the damage is small
- Clear growth from the base of walls and joints
- Avoid pressure-washing directly into sealant joints
Only paint over the joint if we have confirmed the sealant can take paint. Many exterior sealants aren’t designed to be painted, and paint can crack as the joint moves.
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, all bigger jobs than a reseal.