Essex · England
External & façade joints in Great Berry, Essex
External mastic for Great Berry, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Hard, crazed mastic that has stopped moving
- Weeds or debris growing in open joints
- Movement joints with cracked, split or missing sealant
How we handle external mastic in Great Berry
A movement joint is a deliberate break that lets a wall expand and contract. The sealant in it has to stretch and squeeze for years, and when it fails, the wall takes the strain and water finds a way in. We work on render & cladding joints, concrete & block and joints between brick and frames, and common reasons people get in touch are joints pointed up with cement by mistake and damp patches traced to an open external joint.
Homes around Great Berry range from older cottages to newer houses, with walls and rooflines of every type. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Great Berry (SS16, SS15, CM13)
- Wider area
- Essex
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Questions from Great Berry
Is Great Berry within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you cover Great Berry for external mastic?
Yes, Great Berry is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we’ll send you a clear quote.
Can you seal over the old sealant?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. We remove it all first.
How long should I leave it?
Cure times vary by product and the temperature. We tell you how long to leave it before we go.
What’s an expansion joint in brickwork?
Walls move with heat, cold and moisture, so long walls have planned gaps to take that movement. It’s closed with backing rod and a flexible sealant.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
How do I get a quote for external mastic in Great Berry?
It depends on the job, so we quote each one individually. For a quick quote, call 0345 464 0079 or drop us an email and let us know what needs doing and where.
Do you have insurance?
Yes, we’re fully insured.
What affects the quote in Great Berry
Jobs vary more than people expect. What affects the quote:
- How many areas need sealing
- The old material and how stubborn it is
- Access and height
- Whether there’s mould to deal with
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
What we need to know
You do not need to know the technical terms. It helps if you can tell us:
- Where the job is, and your postcode
- How we’d reach the joints
- A few pictures by email, if you can
- Whether it’s a home or a business
Need a quote? Please phone 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Places near Great Berry
More services for Great Berry
How the job changes by surface
Copings and trims
Copings expand and contract through the day, so a flexible sealant suits them best year round.
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. The old joint is removed and a sealant that bonds to both sides goes in.
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
How the visit works
Every visit runs the same way: we check the joints, protect the area around them, do the work and clear up. Most jobs take a few hours to a few days, depending on the length of joint and the access. Parking around Great Berry is generally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- First, the joints are inspected and the access agreed.
- 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.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Let us know about earlier repairs to the joints
- Tell us if parking is tricky
- Let us know about stairs, lifts or work at height
Ask for a quote
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work before giving you a price.
Related advice
Common problems we fix in Great Berry
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, so it pulls away from the edges.
The problems people usually mention when they call are:
- Water getting into walls through failed joints
- Failed seals between different materials
- Old sealant gone brittle and cracked
- Panel joints letting water in
If you look after a building such as Great Berry Primary School, its movement joints, gutters and trims need looking after like any other building’s.
What to look for in a quote
- How long the guarantee is
- Who does the work, and how experienced they are
- Which colour the sealant will be
- What insurance they hold
Great Berry buildings and the weather
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near St John, older walls, gutters and the joints where extensions meet them need a flexible sealant. If you let a flat or house near Laindon station, split movement joints are easy to miss on a rental until damp shows inside.
Great Berry is about 2 miles west of Basildon, in Essex. We carry out external mastic for homes and businesses in Great Berry and the surrounding area. We cover 644 towns and villages across Essex, from the larger towns to small villages. For nearby work, see our Chelmsford page (12 miles or so).
All of SS16, SS15 and CM13 is covered for external mastic, from the main roads to the quietest streets. Whether your property is on New Avenue, Coburg Lane and West Avenue or a nearby road, our applicators can take on the job. We also cover the places around Great Berry: Langdon Hills (1 mile south-east), Laindon (1 mile north-east), Lee Chapel (2 miles east), Steeple View (2 miles north-east) and Basildon (2 miles east). We also work in nearby towns such as Chelmsford (12 miles north), Brentwood (6 miles north-west), Canvey Island (8 miles east), Billericay (4 miles north), Rayleigh (9 miles east) and Wickford (6 miles north-east).
Local landmarks in Great Berry
Locally, jobs take us to homes and businesses close to Gloucester Park and The James Hornsby School and the streets around them. For rail, the closest station is Laindon station, about 0.7 miles east of the centre. Well-known places in the area include Basildon University Hospital (1.9 miles east) and Eastgate Shopping Centre (2.2 miles east). Not far away are Langdon Nature Reserve.
What happens if it’s left?
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost, so the problem grows beyond the joint itself. Around Great Berry, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
The cost depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
Why book with us
- Full insurance on every job
- Experience in homes, commercial sites and hotels
- Any old sealant cut out fully, not covered over
- Colour agreed with you before any work starts
Take a look at our cost guide or customer reviews.
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Keep high-pressure jets off the joints
- Ask before painting over external sealant
- Make sure movement joints aren’t pointed over
- Check external joints each spring
Do not paint over the new sealant unless we’ve said the product is paintable. Paint can crack on a flexible joint and spoil the finish.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal.