Essex · England
External Mastic in Copford
We cover Copford for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Rain getting behind render or cladding at a joint
- Weeds or debris growing in open joints
- Failed seals between different materials
External mastic in Copford
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it. Typical jobs include joints pointed up with cement by mistake and damp patches traced to an open external joint, across brickwork movement joints, concrete & block and copings & trims.
External sealant needs dry, clean surfaces, so work around Copford is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
Big or small, it’s backed by our one-year guarantee.
- Where
- Copford (CO6, CO3)
- Region
- Essex
- Cover
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about external mastic in Copford
Do you cover smaller places like Copford?
Yes, Copford is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you do external mastic in Copford?
Yes. Our work covers London and the South East, and Copford is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.
How much does external mastic cost in Copford?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we’ll talk you through it.
What do you need from me for a quote?
A short description and the location, with pictures by email if possible. If we need more, we will ask.
Is it OK to fill a movement joint with cement?
No. A mortar-filled joint cannot move, so the wall cracks somewhere else instead. It needs a flexible sealant over backing rod.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Will the old sealant be removed?
Yes, always, and completely. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
How long will you be here?
Most jobs take a few hours to a few days, depending on the length of joint and the access. We’ll confirm how long when we quote.
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
We work for landlords and agents as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
Common problems we fix in Copford
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
Any of these means the joints need attention:
- Water getting into walls through failed joints
- Weeds or debris growing in open joints
- Old sealant gone brittle and cracked
- Joints pointed up with cement by mistake
If you look after a building such as The Stanway School, larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before booking
- How long the guarantee is
- How the joint is cleaned and prepared
- Whether the sealant suits the joint
- What happens if they find a problem under the old sealant
When it isn’t the sealant
In fairness, there are a few things sealant will not fix:
- Walls that need new movement joints cut into them
- Cracking across the wall rather than at a joint
- Loose or hollow render, which needs re-rendering
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think before booking.
Joints and surfaces we work on
- Façade panels
- Concrete & block
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
- Brickwork movement joints
Different surfaces, different methods
Render joints
Render is weaker at the surface than brick, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.
Joints between dissimilar materials
Each side of the joint may need its own preparation. We prepare both faces so the sealant bonds properly.
How it works
There’s no need to move everything out before we come, just the space around the work. We protect the rest, and the job takes a few hours for a handful of joints, longer for a whole elevation for a typical job. For a village or hamlet like Copford, 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 inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- For indoor joints, keep the area dry beforehand if you can
- Let us know about parking restrictions
How to get a quote
Need a quote? Please ring 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and send you a clear quote before any work starts.
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More services for Copford
DIY sealant or a professional job?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
How we quote for external mastic
Call for a quick quote. The main things that affect it are:
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
- The product the joint needs
- When we can work, for business premises
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- How we’d reach the joints
- The problem you’ve noticed
- A few pictures by email, if you can
- The rough size of the job
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved.
What external mastic looks like in Copford
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. With historic houses such as Layer Marney Tower (about 4 miles south) nearby, there’s older building stock in the area around Copford as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
If you live in an older home near Parish Church of St Albright, old and new materials meet at the roofline and walls, which is where sealant earns its keep. For landlords with property near Marks Tey station, outside joints that have cracked can let damp into a rental, so check them between lets.
Copford is about 4 miles west of Colchester, in Essex. Whether you are in the middle of Copford or further out, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Copford is one of 644 towns and villages in Essex where we work. You can also see our page for Chelmsford, about 17 miles away.
Here we cover the CO6 and CO3 postcode area for external mastic. That includes homes and businesses on London Road, Church Road and Millstone Green and the roads around them. You will find Copford on the B1408, so it’s easy for us to get to with everything needed for external mastic. We also cover the places around Copford: Mulberry Green (1 mile south), Aldham (1 mile north-west), Marks Tey (1 mile west), Easthorpe (2 miles south-west) and Little Tey (2 miles west). We also work in nearby towns such as Colchester (4 miles east), Braintree (10 miles west), Maldon (12 miles south-west), Witham (9 miles south-west), Camulodunum (3 miles east) and Halstead (8 miles north-west).
Landmarks near Copford
Typical jobs here are in homes near The Swan pub and the streets around them. For rail, the closest station is Marks Tey station, about 0.7 miles west of the centre. Other landmarks nearby include Essex County Hospital (3.9 miles east) and Birch Castle (2.7 miles south). Not far away are Iron Latch.