Essex · England
East Horndon External Mastic
External mastic for East Horndon, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Cracked joints where brick meets render or frames
- Rain getting behind render or cladding at a joint
- Failed sealant between panels on a façade
External mastic for homes and businesses in East Horndon
Getting the depth right is half the job. 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. If you are dealing with water getting into walls through failed joints and failed seals between different materials, we can put it right.
Somewhere as small as East Horndon, 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.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- East Horndon (CM13)
- Region
- Essex
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Check external joints each spring
- Clear growth from the base of walls and joints
- Keep movement joints as flexible joints, not mortar
- Ask before painting over external sealant
Don’t let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.
Places near East Horndon
What else we do in East Horndon
How we quote for external mastic
Call for a quick quote. The main things that affect it are:
- When we can work, for business premises
- Any mould that needs treating
- The product the joint needs
- Access and height
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- A few pictures by email, if you can
- What’s wrong with the joints now
- Any access issues, like height or stairs
- The address or postcode of the job
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work.
Landlord and commercial work in East Horndon
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
The process
We keep the work tidy and contained to the joints we are treating, so you can carry on as normal. The job generally takes a few hours to a few days, depending on the length of joint and the access, and we tell you how long to leave it before we go. For a village or hamlet like East Horndon, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Mention any parking rules near the property
- Keep children and pets away from the work area
- Mention if the joints have been sealed before
How to get a quote
Need a quote? Please phone 0345 464 0079 or email us and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
When to call us in East Horndon
Weeds, moss and debris in a joint are a sign the sealant has gone. Roots and dirt hold water against the wall and make things worse.
Common reasons people contact us include:
- Hard, crazed mastic that has stopped moving
- Panel joints letting water in
- Brick movement joints where the sealant has split
- Weeds or debris growing in open joints
Homes close to All Saints Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
What your quote should include
- What insurance they hold
- How long to leave it before use
- Whether VAT is included
- Who does the work, and how experienced they are
Different surfaces, different methods
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it. Tell us what the building has when you get in touch.
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant so the movement is taken up.
East Horndon buildings and the weather
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.
If you look after a building such as West Horndon Primary School, its movement joints, gutters and trims need looking after like any other building’s. If you let a flat or house near West Horndon station, split movement joints are easy to miss on a rental until damp shows inside.
East Horndon is about 4 miles south-east of Brentwood, in Essex. From the centre of East Horndon to the outskirts, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Across Essex, we cover 644 places, and East Horndon is one of them. You can also see our page for Chelmsford, about 12 miles away.
Jobs for external mastic in CM13 works the same way as everywhere else we cover. Local streets include Southend Arterial Road, Elliots Close and Tilbury Road. Other places close to East Horndon include West Horndon (1 mile south-west), Herongate (1 mile north), Childerditch (2 miles west), Little Warley (2 miles west) and Bulphan (2 miles south). Within a short drive, we also cover Chelmsford (12 miles north-east), Basildon (4 miles east), Brentwood (4 miles north-west), Canvey Island (11 miles east), Billericay (4 miles north-east) and Rayleigh (11 miles east).
Near you in East Horndon
The nearest railway station is West Horndon station, roughly 1 mile south-west. Other landmarks nearby include Spire Hartswood Hospital (3.1 miles north-west). Green spaces nearby include Langdon Nature Reserve.
When something else is needed
We won’t take on work that won’t last, so here’s what sealant cannot put right:
- Failed render or damaged cladding panels
- Cracked brickwork or render that needs a builder or plasterer
- Cutting new joints into brickwork, which is building work rather than sealant work
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
Joints and surfaces we work on
- Joints between brick and frames
- Brickwork movement joints
- Concrete & block
- Copings & trims
- Façade panels
- Render & cladding joints
FAQs for East Horndon
Do you cover smaller places like East Horndon?
Yes. East Horndon 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.
Do you work for landlords with property near West Horndon station?
Yes, we work for letting agents and landlords. Just phone 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
Do you work at height?
It depends on the building. Where joints can be reached safely, we will do them. Tell us about the building and we will confirm what access is needed.
How long will you be here?
It depends on the size of the job, but as a guide it takes a few hours to a few days, depending on the length of joint and the access. We’ll give you a better idea when we quote.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Do the sealants smell?
Some sealants have a smell while they cure. Ventilation helps.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.