Essex · England
Cock Street External Mastic
External mastic across Cock Street and nearby, with old sealant always removed completely.
- Rigid filler in a joint that should flex
- Movement joints with cracked, split or missing sealant
- Failed sealant between panels on a façade
How we handle external mastic in Cock Street
For buildings in Cock Street, we reseal external joints of all kinds, from brick movement joints to cladding panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. We work on copings & trims, brickwork movement joints and concrete & block, and people most often call us about failed sealant between panels on a façade and failed seals between different materials.
Around Cock Street, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in, and they need the right sealant at the right depth.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Location
- Cock Street (CO6)
- Wider area
- Essex
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Adding movement joints to masonry that has none
- Movement that is more than a sealant joint can take
- Rising or penetrating damp from elsewhere in the wall
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
Surfaces we seal
- Concrete & block
- Render & cladding joints
- Façade panels
- Copings & trims
- Joints between brick and frames
- Brickwork movement joints
Signs you need external mastic in Cock Street
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
It’s worth asking for a quote if you see:
- Movement joints with cracked, split or missing sealant
- Old sealant gone brittle and cracked
- Water getting into walls through failed joints
- Panel joints letting water in
If you live in an older home near St Matthew's Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Comparing quotes
- Which sealant they’ll use, and why
- Whether they’re fully insured
- How the surfaces are prepared before sealing
- What the cure time is
How it works
We keep the work tidy and contained to the joints we’re treating, so you can get on with your day. Expect the work to take a few hours to a few days, depending on the length of joint and the access, and we explain the cure time before we leave. Somewhere as small as Cock Street, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Before we arrive
- Clear items away from the joints we are working on
- Mention if the joints have been sealed before
- Mention any sign-in or site rules at work premises
How to get a quote
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or send us an email.
Read more
Why act early in Cock Street
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner, so it pays to do it properly once. In a small place like Cock Street, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Combining jobs into one visit generally makes better use of the time than several visits. You’ll get one clear quote for the whole job.
Why Cock Street clients choose us
- You choose the colour before work begins
- 4.9 on Google from 180+ five-star reviews
- One-year guarantee on every job
- Any old sealant cut out fully, not covered over
See what affects the cost and our reviews.
Different surfaces, different methods
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant so neither cracks the other.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it.
Places near Cock Street
More services for Cock Street
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Deal with leaking gutters that soak the joints below
- Act on the first splits you see
- Wash walls gently around the sealant
- Keep movement joints as flexible joints, not mortar
Only paint over the joint if we have confirmed the sealant can take paint. Paint can crack on a flexible joint and spoil the finish.
Act while the splits are small. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
Cock Street questions
Can you help a landlord with a rental near Bures station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before we start.
Do you cover smaller places like Cock Street?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we will agree access with you when we book.
Is there a guarantee?
Yes. Every job comes with a one-year guarantee.
Do you seal joints where cladding meets other materials?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. The sealant is matched to both sides.
Do you work at height?
It depends on the building. We work on joints that can be reached safely. Tell us about the building and we’ll confirm what access is needed.
Is it OK to fill a movement joint with cement?
No. Cement or mortar cannot stretch, so the joint stops doing its job. Where a joint has been mortared, it can often be raked out and sealed properly.
Are you fully insured?
Yes. We are fully insured.
Quotes for external mastic in Cock Street
Some jobs are bigger than they look, and some smaller. The main factors:
- Access and height
- Working hours on commercial sites
- The number and length of the joints
- The number of rooms or windows
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first.
What to tell us for a quote
To help us quote quickly, let us know:
- What the problem is, such as mould, gaps, leaks or cracking
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
For a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. You’ll have a clear quote before we start.
External mastic in Cock Street: local notes
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Rented homes near Bures station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Cock Street is in Essex. From the centre of Cock Street to the outskirts, external mastic is available for homes and businesses alike. Our Essex coverage runs to 644 places, and Cock Street is one of them. For nearby work, see our Chelmsford page, about 24 miles away.
Jobs for external mastic in CO6 works the same way as everywhere else we cover. Other places close to Cock Street include Leavenheath (1 mile west), Stoke-by-Nayland (1 mile east), Nayland (1 mile south-east), Wissington (2 miles south) and Little Horkesley (3 miles south). Within a short drive, we also cover Colchester (7 miles south), Braintree (15 miles south-west), Camulodunum (7 miles south), Halstead (10 miles west), Greenstead (8 miles south-east) and Tiptree (13 miles south).
Around Cock Street
Locally, jobs take us to homes and businesses close to Lion pub and the streets around them. The nearest railway station is Bures station, roughly 4 miles west. Nearby you’ll also find Mount Bures (4.3 miles south-west) and Severalls Hospital (5.3 miles south). For a walk, there’s Arger Fen.