Essex · England
External Mastic in West Horndon
Movement joints in West Horndon need attention? We remove the old material, prepare the joints and seal them properly.
- Moss and dirt in joints with no sealant left
- Sealant pulling away from one side of the joint
- Rigid filler in a joint that should flex
Honest limits
In fairness, some problems need a different trade:
- Loose or hollow render, which needs re-rendering
- Cracked brickwork or render that needs a builder or plasterer
- Subsidence or other structural problems
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think.
Where we work in West Horndon
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Brickwork movement joints
- Façade panels
- Concrete & block
External mastic in West Horndon
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two where mortar or filler would crack. We work on concrete & block, copings & trims and joints between brick and frames, and the jobs we see most are failed sealant between panels on a façade and rain getting behind render or cladding at a joint.
Around West Horndon, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
Big or small, you get the same one-year guarantee in West Horndon and across Essex.
- Location
- West Horndon (CM13)
- Wider area
- Essex
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Questions from West Horndon
Will you come out to West Horndon?
Yes, West Horndon is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you do external mastic in West Horndon?
Yes, West Horndon is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
Is there a guarantee?
Yes: twelve months. If there’s a problem with our work in that time, tell us and we will put it right.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Can you seal joints between render and window frames?
Yes. Joints between dissimilar materials are a big part of external work. The sealant is chosen to bond to both sides, primed where needed.
Should I point up the gap in my brickwork?
No, not where the gap is a movement joint. Pointing it stops it working, and the wall may crack nearby. We will reseal it with a flexible sealant.
Is it messy?
We keep the work tidy. We protect what’s around the joints.
Can you seal over the old sealant?
No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
What we do, step by step
The work is kept neat and contained to the area we’re working on, so you can carry on as normal. The job normally takes anything from a few hours to several days, depending on the building, and we explain the cure time before we leave. In a small place like West Horndon, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- 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.
How to prepare
- Let us know about parking restrictions
- Let us know if you’ve seen damp or leaks
- For business premises, tell us about site rules or sign-in
Get a quote
We do not publish a price list. Instead, we give you a clear price for your job. To arrange one, ring 0345 464 0079 or send us an email.
Advice
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
External mastic in West Horndon: local notes
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For site and facilities teams at buildings such as West Horndon Primary School, larger buildings have long runs of movement joint that eventually need resealing. 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.
West Horndon is about 4 miles south-east of Brentwood, in Essex. Across the CM13 area, we can carry out external mastic at your property. Our Essex coverage runs to 644 places, West Horndon among them. There’s also a page for Chelmsford, about 13 miles away.
Jobs for external mastic in CM13 is quoted and booked the same way as anywhere else. If you need external mastic at a property on Station Road, Petresfield Way and Cadogan Avenue or a nearby road, our applicators can take on the job. Close by, we work in East Horndon (1 mile north-east), Childerditch (1 mile north-west), Little Warley (1 mile west), Bulphan (2 miles south-east) and Herongate (2 miles north). Larger places within reach include Chelmsford (13 miles north-east), Basildon (5 miles east), Brentwood (4 miles north-west), Canvey Island (11 miles east), Billericay (5 miles north-east) and Rayleigh (11 miles east).
What’s near West Horndon
There’s a railway station in West Horndon itself: West Horndon station. Other landmarks nearby include Upminster Tithe Barn Museum of Nostalgia (3.8 miles west) and Spire Hartswood Hospital (3 miles north-west). Open spaces near West Horndon include Langdon Nature Reserve.
Surface by surface
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant.
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it or an approved alternative. Send us any details you have about the façade.
Towns and villages near West Horndon
What else we do in West Horndon
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can be quoted together.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Leave it or put it right?
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 West Horndon, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before we start, so you know where you stand.
Why book with us
- We agree the colour with you first
- 4.9 on Google from 180+ five-star reviews
- Arbo and Everbuild products
- Sealant colour chosen to suit
Read our cost guide and our reviews.
When to call us in West Horndon
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint and speed up the damage.
People usually contact us after spotting something like this:
- Damp patches traced to an open external joint
- Old sealant gone brittle and cracked
- Brick movement joints where the sealant has split
- Rigid filler in a joint that should flex
Homes close to St Francis include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
What your quote should include
- The length of the guarantee
- Whether you can choose the colour
- Whether they’re fully insured
- How the joint is cleaned and prepared