Essex · England
New England External Mastic
Our applicators work in New England on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Rain getting behind render or cladding at a joint
- Sealant that has lost its bond to the brick or render
- Weathered mastic that no longer stretches
How we handle external mastic in New England
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a colour to suit. If you’re dealing with leaking joints around cladding and façade panels and rigid filler in a joint that should flex, we can help, on joints between brick and frames, façade panels and brickwork movement joints alike.
Outside joints can only be sealed when they’re dry, so work in New England is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or drop us an email.
- Place
- New England (CO9)
- Wider area
- Essex
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Signs you need external mastic in New England
Poor preparation causes many early failures: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
People usually contact us after spotting something like this:
- Movement joints with cracked, split or missing sealant
- Failed seals between different materials
- Damp patches traced to an open external joint
- Rigid filler in a joint that should flex
Homes close to Church of St Leonard include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
What to look for in a quote
- Whether all the old sealant comes out first
- Whether the sealant suits the joint
- What insurance they hold
- What preparation is included
What the job involves on each surface
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. Their movement joints are sealed over backing rod with a flexible sealant.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. If that is happened, we rake it out and reseal it properly where it can be done safely.
Why act early in New England
Resealing a run of joints in one go is generally better than patching one at a time. Joints of the same age tend to fail together, and access only has to be arranged once. Older cottages and farmhouses around New England 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. Size, access and the product the joint needs all play a part.
Why us?
- Rated 4.9 stars on Google
- Sealant colour chosen to suit
- Trusted Arbo and Everbuild sealants
- Fully insured
Take a look at what affects the cost or our reviews.
Walls and rooflines in New England
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In and around New England, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
New England is in Essex. Our applicators cover external mastic for householders, landlords and businesses in New England and the surrounding area. New England is one of 644 towns and villages in Essex where we work. For nearby work, see our Chelmsford page.
Postcode districts we cover here for external mastic: CO9. We also cover Birdbrook (1 mile south). Further out, we also cover Braintree (13 miles south), Saffron Walden (11 miles west), Halstead (10 miles south-east), Great Dunmow (14 miles south-west), Great Notley (14 miles south) and Bocking (12 miles south).
Local landmarks in New England
Typical jobs here are in homes near Haverhill Railway Walks, among other places. Nearby you’ll also find Clare Castle (4.2 miles east) and Haverhill and District Local History Centre (2.5 miles north-west).
How the visit works
There’s no need to move everything out, just the space around the work. We protect the rest, and the work takes a few hours for a handful of joints, longer for a whole elevation for a typical job. For a village or hamlet like New England, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. 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.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Let us know about parking restrictions
- Let us know about stairs, lifts or work at height
- For business premises, tell us about site rules or sign-in
Getting a quote
For external mastic in New England, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and you will get a clear quote before work begins.
Read more
What sealant work cannot fix
It helps to know what we can’t do too:
- Cracked brickwork or render that needs a builder or plasterer
- Failed render or damaged cladding panels
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly.
What we seal
- Joints between brick and frames
- Concrete & block
- Brickwork movement joints
- Façade panels
- Render & cladding joints
- Copings & trims
New England: your questions answered
Can you do external mastic in New England?
Yes, New England is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing.
What guarantee comes with external mastic in New England?
All our work, in New England and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Where are you based?
We are based in Crawley, and we cover South East England, London and all of Scotland.
What sealant do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
Are you insured?
Yes, we’re fully insured.
What information do you need?
A short description and the location. If we need more, we will ask.
How long does the job take?
A typical job takes a few hours for a handful of joints, longer for a whole elevation. Your quote will say how long we expect yours to take.
How long should I leave it?
Different products cure at different speeds, so follow the cure time we give you when we finish.
Towns and villages near New England
Also in New England
Landlords, agents and businesses in New England
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
DIY versus a professional finish
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
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.