Essex · England
Mowden External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Mowden and across Essex. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Weathered mastic that no longer stretches
- Panel joints letting water in
- Gaps where render, brick and frames meet
External mastic for homes and businesses in Mowden
Ground-floor and low-level joints are straightforward to reach. Where joints are higher up, tell us about the building when you get in touch and we will confirm what’s needed to reach them safely. We are often asked to deal with rigid filler in a joint that should flex and failed seals between different materials, across joints between brick and frames, render & cladding joints and copings & trims.
Somewhere as small as Mowden, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
Whatever the size of the job, you get the same one-year guarantee.
- Where
- Mowden (CM3)
- Wider area
- Essex
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Should I try it myself first?
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
A careful DIYer can reseal a simple joint, 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 it works
The work is kept neat and contained to the area we are working on. Expect the work to take anything from a few hours to several days, depending on the building, and we tell you how long to leave it before we go. In a small place like Mowden, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Mention any sign-in or site rules at work premises
- Mention any tricky access
- Clear items away from the joints we are working on
How to get a quote
Every job is quoted individually. Just call 0345 464 0079 or drop us an email with the details and send photos if you have them.
Related advice
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Act on the first splits you see
- Keep movement joints as flexible joints, not mortar
- Point out the joints to other trades
- Do not let climbing plants root in the sealant
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead over time.
Act while the splits are small. Then it’s a straightforward cut-out and reseal before water has had years to get in.
Leave it or put it right?
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Older cottages and farmhouses around Mowden can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why Mowden clients choose us
- Fully insured
- White, clear, grey or coloured to suit, where the product allows
- Rated 4.9 stars on Google
- You choose the colour before work begins
Take a look at how sealant jobs are priced and customer reviews.
Surface by surface
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. A primer goes on where the product requires one before the bead.
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.
How we quote for external mastic
We don’t publish a price list, because no two jobs are the same. What we look at:
- The product the joint needs
- Any mould that needs treating
- The amount of work
- Whether the work is at height
The cost depends on the size of the job, how much old material has to come out and access to the work. You will have a clear quote before any work starts, so you know where you stand.
Asking for a quote
Before you ask for a quote, have a think about:
- Whether it’s a home or a business
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
Getting a quote is simple: let us know what needs doing and where and its rough size. A few pictures by email make the job easier to understand, and we’ll come back to you with a quote.
Walls and rooflines in Mowden
Historic houses like Danbury Place (about 3.3 miles south) are a reminder that the area around Mowden has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Historic houses such as Danbury Place, about 3.3 miles south, show how far back building around Mowden goes. Letting a property close to Hatfield Peverel station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Mowden is about 4 miles south-west of Witham, in Essex. If you need external mastic in Mowden, it’s easy to get a quote: please call 0345 464 0079 or email us. We cover Essex from our Crawley base, Mowden included. Mowden is one of 644 towns and villages in Essex we cover for external mastic.
Here we cover the CM3 postcode area for external mastic. We also cover the places around Mowden: Hatfield Peverel (1 mile north-east), Boreham (1 mile west), Little Baddow (2 miles south), Springfield (3 miles west) and Danbury (3 miles south). We also work in nearby towns such as Chelmsford (4 miles south-west), Basildon (14 miles south), Braintree (8 miles north), Brentwood (15 miles south-west), Maldon (5 miles south-east) and Billericay (11 miles south-west).
Landmarks near Mowden
For rail, the closest station is Hatfield Peverel station, about 1.5 miles north-east. A little further out are Priory Hospital (3.9 miles west). The countryside around Mowden includes Danbury Ridge Nature Reserves.
Other services in Mowden
Your questions about external mastic in Mowden
Is Mowden in your area for external mastic?
Yes. We work across London and the South East, and Mowden is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear price.
Will you come out to Mowden?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Does someone need to be in?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that normally means someone at home.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
What colours does the sealant come in?
We choose a sealant colour to suit the brick, stone or render so the joint blends in. There’s a wide choice of exterior colours.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Where is Mr Mastic based?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Do you seal joints where cladding meets other materials?
Yes. Where different materials meet is one of the most common joints we seal. We use a flexible sealant suited to both surfaces.
Work for landlords, hotels and businesses
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we are fully insured.