Essex · England
Mulberry Green External Mastic
External mastic across Mulberry Green and nearby, with old sealant always removed completely and a 12-month guarantee.
- Sealant that has lost its bond to the brick or render
- Damp patches traced to an open external joint
- Failed seals between different materials
What external mastic looks like in Mulberry Green
With historic houses such as Layer Marney Tower (about 2.8 miles south) nearby, there’s older building stock in the area around Mulberry Green as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as The Stanway School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you live in an older home near Church of St Mary, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Mulberry Green is about 5 miles west of Colchester, in Essex. We provide external mastic to householders, landlords and businesses in Mulberry Green, as part of our work across Essex. 644 places in Essex are on our list. You can also see our page for Chelmsford, about 16 miles away.
We cover every part of the CO6 and CO5 postcode area for external mastic and the streets around it. External mastic is available to properties on Rectory Road and Easthorpe Road. Other places close to Mulberry Green include Easthorpe (1 mile south-west), Copford (1 mile north), Marks Tey (1 mile north-west), Little Tey (2 miles north-west) and Layer Marney (2 miles south). Within a short drive, we also cover Colchester (5 miles east), Braintree (10 miles west), Maldon (10 miles south-west), Witham (8 miles south-west), Camulodunum (4 miles east) and Halstead (9 miles north-west).
Local landmarks in Mulberry Green
We work in homes and buildings around Alma Public House, among other places. The nearest railway station is Marks Tey station, roughly 1.2 miles north of the centre. Nearby you will also find Essex County Hospital (4.5 miles east) and Birch Castle (1.8 miles south-east). The countryside around Mulberry Green includes Iron Latch.
External mastic in Mulberry Green
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it and we use one wherever it does. We’re often asked to deal with plants rooting in failed movement joints and failed sealant between panels on a façade, across joints between brick and frames, brickwork movement joints and façade panels.
External sealant needs dry, clean surfaces, so work around Mulberry Green is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
You’re covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Where
- Mulberry Green (CO6, CO5)
- Region
- Essex
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
How we quote for external mastic
We quote each job individually. These are the things that affect it:
- Which sealant suits the joint
- How many rooms, windows or areas are involved
- The number and length of the joints
- Whether the work is at height
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
What to tell us for a quote
You don’t need to know the technical terms. Just tell us:
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
- The address or postcode of the job
- How we’d reach the joints
For a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. We will send you a clear quote before any work starts.
What the job involves on each surface
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. We cut out the old sealant and reseal with a product suited to both surfaces.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Wash walls gently around the sealant
- Leave the joints unpainted unless we’ve said otherwise
- Deal with leaking gutters that soak the joints below
- Tell anyone working on the walls about the movement joints
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage which cost more to put right than the joint.
Towns and villages near Mulberry Green
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Common questions in Mulberry Green
Do you work for landlords with property near Marks Tey station?
Yes. We work for landlords and letting agents as well as householders. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Is Mulberry Green in your area for external mastic?
Yes, Mulberry Green is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Can you do several jobs on one visit?
Yes. More than one area can be quoted together.
Can new sealant go over the old?
No, and we never do. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Can you work on commercial sites?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
Is it OK to fill a movement joint with cement?
No. Rigid materials can’t move with the wall and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
What is backing rod for?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. Then the sealant bonds to two faces and can move.
For landlords and businesses
For anyone letting property in or around Mulberry Green, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
What we’re called out for in Mulberry Green
Sunlight, wet weather and frost wear exterior sealant down. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
These are the problems we’re asked about most:
- Hard, crazed mastic that has stopped moving
- Failed seals between different materials
- Movement joints filled with mortar instead of sealant
- Rain getting behind render or cladding at a joint
Rented homes near Marks Tey station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Questions to ask before you book
- Is VAT in the price?
- What happens if they find a problem under the old sealant
- Which sealant they’ll use, and why
- How long to leave it before use
What we do, step by step
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes a few hours for a handful of joints, longer for a whole elevation from start to finish. For a village or hamlet like Mulberry Green, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided 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.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us if parking is tricky
- Try not to wet indoor joints just before the visit
Getting a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. Whenever you are ready, ring 0345 464 0079 or send us an email.