Essex · England
Moulsham External Mastic
We cover Moulsham for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Leaking joints around cladding and façade panels
- Sealant that has lost its bond to the brick or render
- Rigid filler in a joint that should flex
For landlords and businesses
For anyone letting property in or around Moulsham, several properties can be quoted together. Just tell us the addresses and what each one needs.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
How we handle external mastic in Moulsham
A movement joint is a deliberate break that lets a wall expand and contract. The sealant in it has to stretch and squeeze for years, and when it fails, the wall takes the strain and water finds a way in. We work on façade panels, concrete & block and brickwork movement joints, and the jobs we see most are movement joints with cracked, split or missing sealant and plants rooting in failed movement joints.
Homes around Moulsham range from older cottages to newer houses, with walls and rooflines of every type. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
Each job carries a 12-month guarantee.
- Where
- Moulsham (CM2, CM1)
- Wider area
- Essex
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Quotes for external mastic in Moulsham
The price is agreed before any work begins. It’s based on:
- Which sealant suits the joint
- The size of the job
- Whether old sealant or filler has to be cut out
- When we can work, for business premises
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- How many joints, rooms or windows are involved
- Access, such as stairs, a lift or height
- Whether it has been sealed before
- Pictures of the joints, sent by email
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.
How the job changes by surface
Render joints
The face of render can be soft, so a sealant that stretches easily protects the edges. We prime where the product needs it.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. If that is happened, we rake it out and reseal it properly.
What external mastic looks like in Moulsham
Historic houses like Hylands (about 1.7 miles south-west) are a reminder that the area around Moulsham has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. Rainfall in the South East is lower than in much 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 Church of St John the Evangelist, the joints between older walls, newer extensions and the roofline need a sealant that can move. Letting a property close to Chelmsford station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies. Schools such as Our Lady Immaculate Catholic Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Moulsham is about 1 mile south-west of Chelmsford, in Essex. If you need external mastic in Moulsham, it’s easy to get a quote: please call 0345 464 0079 or email us. We cover Essex from our Crawley base, Moulsham included. Our Essex coverage runs to 644 places, and Moulsham is one of them.
Every address in CM2 and CM1 is covered for external mastic. That includes homes and businesses on Elm Road, York Road and Lady Lane. Main roads around Moulsham include the A1060 and A1099. Close by, we work in Chelmsford (1 mile north-east), Widford (1 mile south-west), Patching (2 miles north), Writtle (2 miles west) and Chignall St James (3 miles north-west). We also work in nearby towns such as Basildon (11 miles south), Braintree (11 miles north), Harlow (15 miles west), Brentwood (10 miles south-west), Maldon (9 miles east) and Canvey Island (15 miles south).
Local landmarks in Moulsham
Around Moulsham, our work takes us to homes and buildings near Moulsham High School, Chelmsford College and Oaklands Park. Nearby too are Our Lady Immaculate Church (within half a mile north) and The Anchor Public House (within half a mile north-east). Moulsham’s nearest station is Chelmsford station, roughly 0.6 miles north of the centre. Nearby you’ll also find Bond Street Chelmsford (0.6 miles north-east) and Peter Edwards Museum And Library (under half a mile north). For a walk, there’s Newland Grove.
Keeping the joints in good condition
Good habits help new joints last longer. Our tips:
- Ask before painting over external sealant
- Walk round the building once a year and look at the joints
- Never let anyone fill a movement joint with mortar
- Act on the first splits you see
Only paint over the joint if we have confirmed the sealant can take paint. Paint can crack on a flexible joint, and paint can crack as the joint moves.
Once a joint cannot move, the wall finds another way, often as cracks near the joint. Catch it early and you reduce the risk.
What sealant work cannot fix
To be straight with you, there are a few things sealant will not fix:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Damp that isn’t coming from the joint
- Loose or hollow render, which needs re-rendering
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
- Façade panels
- Joints between brick and frames
- Concrete & block
How the visit works
At the end, we look at the finished work together and tell you how long to leave it. The visit itself normally takes anything from a few hours to several days, depending on the building, depending on how much there is to do. For a job in Moulsham, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- 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.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us about any water getting in
- Move anything stored near the joints
Getting a quote
Every job is quoted individually. Simply call 0345 464 0079 or drop us an email and describe the job.
Related advice
DIY versus a professional finish
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
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.
Common questions in Moulsham
Is Moulsham in your area for external mastic?
Yes. We work across London and the South East, and Moulsham is part of that. You can phone 0345 464 0079 or drop us an email and tell us what needs doing.
Do you cover smaller places like Moulsham?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Will there be a smell?
Possibly a little. Any smell clears as the sealant cures.
What is a movement joint?
Walls move with heat, cold and moisture, and planned joints take up that movement. It’s closed with backing rod and a flexible sealant.
Can I add another job to the visit?
Yes. Just list everything you need and you will get one quote.
How do you reach high-level joints?
Each building is different. Tell us the height, the number of joints and what’s below them, and we’ll confirm what access is needed.
Can you seal over the old sealant?
No. The old sealant always comes out first, so the new joint bonds to clean surfaces.