Essex · England
Great Leighs External Mastic
External mastic for Great Leighs, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cracked joints where brick meets render or frames
- Panel joints letting water in
- Moss and dirt in joints with no sealant left
Leave it or put it right?
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner, so it pays to do it properly once. Older cottages and farmhouses around Great Leighs can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and agree the price before starting.
Why us?
- Colour picked to suit the job
- Quality sealants from Arbo and Everbuild
- ARBOMaster approved applicator
- White, clear, grey or another colour, product permitting
Take a look at how sealant jobs are priced or customer reviews.
External mastic for homes and businesses in Great Leighs
On houses, flats and commercial buildings across Great Leighs, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean joint faces and the right depth. We are often asked to deal with failed sealant between panels on a façade and sealant that has lost its bond to the brick or render, across joints between brick and frames, render & cladding joints and façade panels.
External sealant needs dry, clean surfaces, so work around Great Leighs is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
The work is covered for a year after we finish. If anything is not right with it, phone 0345 464 0079 or drop us an email.
- Location
- Great Leighs (CM3)
- Region
- Essex
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
External mastic in Great Leighs: local notes
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Great Leighs Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. If you let a flat or house near Cressing station, split movement joints are easy to miss on a rental until damp shows inside.
Great Leighs is about 4 miles south-west of Braintree, in Essex. Homes, rented property, offices and hotels in Great Leighs can book us for external mastic. The work is guaranteed for a year. Our area takes in 644 places across Essex. We also work in Chelmsford, around 6 miles away.
Work in CM3 is quoted and booked the same way as anywhere else. If you need external mastic at a property on Aragon Road, Fortune Close and Audley Road or anywhere close by, our applicators can take on the job. Neighbouring places we cover for external mastic include Gubbion's Green (1 mile east), Young's End (1 mile north-east), Fuller Street (1 mile south-east), Row Green (2 miles north-east) and Fairstead (2 miles east). We also work in nearby towns such as Chelmsford (6 miles south), Braintree (4 miles north-east), Maldon (10 miles south-east), Billericay (14 miles south), Witham (6 miles east) and Wickford (15 miles south).
Local landmarks in Great Leighs
Typical jobs here are in homes near The Castle pub, among other places. The nearest railway station is Cressing station, roughly 3.4 miles north-east of the centre. A little further out are William Julien Courtauld Hospital (3.6 miles north-east). The countryside around Great Leighs includes Sandylay and Moat Woods.
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Keep high-pressure jets off the joints
- Clear growth from the base of walls and joints
- Deal with leaking gutters that soak the joints below
- Leave the joints unpainted unless we’ve said otherwise
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
Honest limits
A few problems are outside what sealant work can do:
- Cracks in the bricks or render themselves, away from the joints
- Loose or hollow render, which needs re-rendering
- Movement that’s more than a sealant joint can take
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly.
Surfaces we seal
- Joints between brick and frames
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
- Concrete & block
- Façade panels
How it works
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The work itself takes a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Great Leighs, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Keep children and pets away from the work area
- Clear items away from the joints we’re working on
- Let us know about parking restrictions
How to get a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job.
Read more
What we are called out for in Great Leighs
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
If you can see any of these, it’s time to have the joints looked at:
- Rigid filler in a joint that should flex
- Joints with sealant missing in places
- Failed sealant between panels on a façade
- Damp patches traced to an open external joint
For an older house near a landmark such as Church of St John the Evangelist, an extension built onto an older house moves differently, and the joint between them takes the strain.
What your quote should include
- Which colour the sealant will be
- Who turns up on the day
- How long the guarantee is
- What insurance they hold
Also near Great Leighs
Other services in Great Leighs
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Questions from Great Leighs
Do you work for landlords with property near Cressing station?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
Will you come out to Great Leighs?
Yes. Great Leighs is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is the work guaranteed?
Yes. Each job is guaranteed for twelve months, wherever you are.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply phone 0345 464 0079 or send us an email.
How long does external mastic take?
It depends on the size of the job, but most jobs take a few hours for a handful of joints, longer for a whole elevation. We’ll tell you when we quote.
Can you quote for more than one area?
Yes. More than one area can go on one quote.
Where are you based?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
How much does external mastic cost in Great Leighs?
Every job is different, so each one gets its own quote. To get one, call 0345 464 0079 or email us and tell us what needs doing and where.
Different surfaces, different methods
Copings and trims
Coping and trim joints face rain and sun head on. Each is resealed with a weatherproof, flexible sealant.
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.