Essex · England
Wethersfield External Mastic
Professional external mastic in and around Wethersfield, with every bit of old sealant taken out first and a one-year guarantee.
- Failed seals between different materials
- Panel joints letting water in
- Sealant that has lost its bond to the brick or render
External mastic for homes and businesses in Wethersfield
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. The colour is chosen to suit the brick or render so the joint does not stand out. We work on copings & trims, joints between brick and frames and brickwork movement joints, and common reasons people get in touch are brick movement joints where the sealant has split and gaps where render, brick and frames meet.
Somewhere as small as Wethersfield, homes and farm buildings often face open ground, 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 anything isn’t right with it, phone 0345 464 0079 or drop us an email.
- Location
- Wethersfield (CM7)
- Region
- Essex
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
When to call us in Wethersfield
A lot of failed joints come down to preparation: dusty or wet faces, no primer where one was needed, or old sealant left in. The new sealant then lets go long before it should.
Any of these means the joints need attention:
- Failed seals between different materials
- Joints pointed up with cement by mistake
- Brick movement joints where the sealant has split
- Water getting into walls through failed joints
Around Wethersfield, as everywhere, external mastic is only as good as the preparation behind it.
Before you book anyone
- Whether they’re fully insured
- When the joint can take water or movement
- How the surfaces are prepared before sealing
- Is VAT in the price?
Also near Wethersfield
What else we do in Wethersfield
Why act early in Wethersfield
Sealing over the top of old mastic doesn’t hold for long. The new layer can’t bond properly to old, weathered material, so the old joint is cut out fully first. Around Wethersfield, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Why book with us
- Domestic, commercial and hotel work
- Tidy, careful work
- Colour agreed with you before any work starts
- Arbo and Everbuild products
Read our cost guide or our reviews.
Honest limits
Before booking, it’s worth knowing the limits too:
- Damp that is not coming from the joint
- Walls that need new movement joints cut into them
- Cracking across the wall rather than at a joint
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think.
Joints and surfaces we work on
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Concrete & block
- Joints between brick and frames
- Copings & trims
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
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.
Surface by surface
Copings and trims
Coping and trim joints face rain and sun head on. Each is resealed with a weatherproof, flexible sealant.
Render joints
Rendered walls have joints at beads, openings and changes of material. We reseal them with a flexible exterior sealant that suits the render colour.
Wethersfield buildings and the weather
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you live in an older home near United Reformed Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Wethersfield is about 6 miles north-west of Braintree, in Essex. Wethersfield gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Wethersfield is one of 644 places in Essex we cover. There’s also a page for Chelmsford, roughly 15 miles from Wethersfield.
All of CM7 is covered for external mastic, from the main roads to the quietest streets. That includes homes and businesses on High Street, West Drive and Silver Street. We also cover Finchingfield (2 miles north-west), Great Bardfield (2 miles west), Bardfield Saling (3 miles south-west), Little Bardfield (3 miles west) and Crow's Green (3 miles south). We also work in nearby towns such as Chelmsford (15 miles south), Braintree (6 miles south-east), Witham (12 miles south-east), Saffron Walden (11 miles north-west), Halstead (6 miles east) and Great Dunmow (8 miles south-west).
Landmarks near Wethersfield
Locally, jobs take us to homes and businesses close to Brewery Tavern, among other places. Well-known places in the area include Braintree Community Hospital (5.5 miles south-east).
Looking after it afterwards
To keep the joints looking good and working properly:
- Clear growth from the base of walls and joints
- Fix overflowing gutters above sealed joints
- Tell anyone working on the walls about the movement joints
- Avoid pressure-washing directly into sealant joints
Give the sealant the cure time we tell you before anything rubs against it. The surface skins over quickly, but full cure takes longer.
Once a joint can’t move, the wall finds another way, usually as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
What happens on the day
All our tools and materials come with us in the van, so you do not need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere like Wethersfield needs a little journey planning: 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.
- We cut out the failed sealant and rake out any dirt or growth.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any water getting in
How to get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that is easy.
Advice
FAQs for Wethersfield
Is external mastic in Wethersfield guaranteed?
All our work, in Wethersfield and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Is Wethersfield in your area for external mastic?
Yes, Wethersfield is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Can you reach joints on upper floors?
It depends on the height and the site. Ground-floor joints are simple; for higher ones, send details and we’ll confirm the access.
Is it OK to seal over old sealant?
No, it will not last. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
When will the joints need doing again?
There’s no fixed answer: joints on exposed walls or with a lot of movement age sooner. A yearly look will tell you when they need doing. Our work comes with a 12-month guarantee.
How much does external mastic cost in Wethersfield?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before any work starts.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator.