Essex · England
External Mastic in Long Green
We cover Long Green for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly.
- Sealant that has lost its bond to the brick or render
- Plants rooting in failed movement joints
- Water getting into walls through failed joints
External mastic in Long Green
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, leaving it bonded to two faces so it can move with the wall. Typical jobs include moss and dirt in joints with no sealant left and rigid filler in a joint that should flex, across brickwork movement joints, concrete & block and copings & trims.
In a village or hamlet like Long Green, 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.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or drop us an email.
- Place
- Long Green (CM77)
- Wider area
- Essex
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes anything from a few hours to several days, depending on the building from start to finish. For a village or hamlet like Long Green, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- Try not to wet indoor joints just before the visit
- Keep pets and children clear of the area while we work
- On commercial sites, let us know about site rules
Get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
Related advice
When it isn’t the sealant
Before booking, it’s worth knowing the limits:
- Render that is blown, hollow or coming away
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
Where we work in Long Green
- Copings & trims
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
DIY versus a professional finish
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
When to call us in Long Green
Sometimes a movement joint was filled with mortar or a rigid filler, often by someone who didn’t know what it was for. The joint can’t move, so the wall cracks somewhere else instead.
Signs it’s time to call us include:
- Leaking joints around cladding and façade panels
- Joints pointed up with cement by mistake
- Plants rooting in failed movement joints
- Movement joints with cracked, split or missing sealant
Letting a property close to Braintree Freeport station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Before you book anyone
- Is VAT in the price?
- When the joint can take water or movement
- What happens if they find a problem under the old sealant
- How much experience the applicator has
For landlords and businesses
Housing providers, facilities teams and property managers book us too in Long Green and across Essex. Several sites can go on one quote, and we are fully insured for the work.
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Places near Long Green
More services for Long Green
How the job changes by surface
Copings and trims
Coping and trim joints face rain and sun head on. Each is resealed with a weatherproof, flexible sealant.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it so the sealant is not too deep.
What external mastic looks like in Long Green
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.
Homes close to St Barnabas include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain. If you look after a building such as Cressing Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Long Green is about 2 miles south-east of Braintree, in Essex. Our applicators cover external mastic for householders, landlords and businesses in Long Green and nearby. Long Green is one of 644 places in Essex where we work. For nearby work, see our Chelmsford page (10 miles or so).
All of CM77 is covered for external mastic. External mastic is available to properties on Pine Road, Fir Drive and Long Green and the roads around them. If you’re just outside Long Green, we cover Tye Green (1 mile south), Hawbush Green (1 mile south-east), Black Notley (1 mile south-west), The Green (1 mile south-west) and Braintree (2 miles north-west). Larger places within reach include Colchester (13 miles east), Chelmsford (10 miles south-west), Maldon (10 miles south-east), Witham (5 miles south-east), Camulodunum (12 miles east) and Halstead (6 miles north).
What’s near Long Green
Locally, jobs take us to homes and businesses close to Alec Hunter Academy, Bocking Blackwater and Fowlers Farm pub and the streets around them. Long Green’s nearest station is Braintree Freeport station, roughly 0.8 miles west of the centre. Other landmarks nearby include William Julien Courtauld Hospital (2 miles west) and Tudor House Museum (Braintree) (2 miles north-west). The countryside around Long Green includes Belcher's and Broadfield Woods.
Why it’s worth doing now in Long Green
Sealing over the top of old mastic does not hold for long. New sealant does not bond well to old, weathered sealant, so we always take the old sealant out. In a small place like Long Green, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Ask us for a quote and we will explain what it covers.
What you get with us
- 180+ five-star Google reviews
- ARBOMaster approved applicator
- Trusted Arbo and Everbuild sealants
- White, clear, grey or coloured to suit, where the product allows
See how sealant jobs are priced and our reviews.
Common questions in Long Green
Can you do external mastic in Long Green?
Yes. We work across London and the South East, and Long Green is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing.
Is Long Green within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Are you insured?
Yes. Full insurance covers our work.
Where are you based?
We work from Crawley. We cover Long Green and the rest of Essex, along with the rest of our area.
When will the joints need doing again?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. A yearly look will tell you when they need doing. Every job carries our one-year guarantee.
Do you use backing rod?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Can landlords and businesses book you?
Yes, regularly. We can quote for several properties at once, and between tenancies is a good time for the work.
Do you guarantee your work?
Yes. All our work carries a one-year guarantee.