Essex · England
External Mastic in Great Canfield
Our applicators work in Great Canfield on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Moss and dirt in joints with no sealant left
- Joints where the bead has come unstuck
- Movement joints filled with mortar instead of sealant
The process
The work is kept neat and contained to the area we’re working on, so you can get on with your day. The job generally takes anything from a few hours to several days, depending on the building, and we explain the cure time before we leave. Somewhere as small as Great Canfield, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the joints are inspected and the access agreed.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any previous sealing or DIY attempts
Getting a quote
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. You will have a clear quote before any work starts.
Related advice
How we handle external mastic in Great Canfield
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, so once it splits or hardens, the joint stops working and water gets in. If you are dealing with panel joints letting water in and brick movement joints where the sealant has split, we can help, whatever the surface.
Outside joints can only be sealed when they’re dry, so work in Great Canfield is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
You get a one-year guarantee, the same in Great Canfield as everywhere else we work.
- Where
- Great Canfield (CM6)
- Wider area
- Essex
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Why deal with it now?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. Where a wall is exposed, as many are in small places like Great Canfield, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first and agree the price before starting.
What you get with us
- We never seal over old sealant
- 4.9 on Google from 180+ five-star reviews
- 12-month guarantee on every job
- We leave the area clean and tidy
See what affects the cost or our reviews.
What we’re called out for in Great Canfield
UV, rain and frost all age exterior sealant. Over the years it hardens, cracks on the surface and loses its give, so the next time the wall moves, it splits or pulls away.
Common reasons people contact us include:
- Movement joints filled with mortar instead of sealant
- Moss and dirt in joints with no sealant left
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
Homes close to Parish Church of St Mary include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
What to look for in a quote
- What preparation is included
- How hidden problems are handled
- Whether you can choose the colour
- The length of the guarantee
Places near Great Canfield
Also in Great Canfield
Great Canfield buildings and the weather
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Barrington Hall (about 2.9 miles west) nearby, there’s older building stock in the area around Great Canfield as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
If you let a flat or house near Stansted Airport station, split movement joints are easy to miss on a rental until damp shows inside.
Great Canfield is about 3 miles south-west of Great Dunmow, in Essex. For external mastic in and around Great Canfield, please call 0345 464 0079 or email us for a quick quote. We are based in Crawley and cover Essex, Great Canfield included. Great Canfield is one of 644 places in Essex where we work. For nearby work, see our Chelmsford page, about 10 miles away.
Work in CM6 is quoted and booked the same way as anywhere else. We cover properties on The Street and Canfield Road and the roads around them. We also cover High Roding (1 mile east), Roundbush Green (2 miles south), Keeres Green (2 miles south), High Easter (2 miles south-east) and Stagden Cross (3 miles south-east). Within a short drive, we also cover Chelmsford (10 miles south-east), Braintree (11 miles east), Harlow (10 miles south-west), Brentwood (14 miles south), Billericay (15 miles south) and Witham (14 miles east).
Local landmarks in Great Canfield
In Great Canfield, that means homes and buildings near The Black Lion Public House, among other places. The closest station to Great Canfield is Stansted Airport station, roughly 4.5 miles north-west of the centre. Well-known places in the area include Little Easton Moat (3.8 miles north). Green spaces nearby include Portingbury Hills.
Landlord and commercial work in Great Canfield
Letting agents and landlords in Great Canfield can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.
Great Canfield questions
Do you cover smaller places like Great Canfield?
Yes, Great Canfield is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you cover Great Canfield for external mastic?
Yes. Our work covers London and the South East, and Great Canfield is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing.
Where do you work from?
We are a Crawley-based firm. We work across South East England, London and Scotland.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.
Do I have to be there?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
What is backing rod for?
That is backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only.
Can tenants book the work?
Of course. Check with your landlord; we can send the quote to them too.
Can you seal joints between two different materials?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.
Can I do it myself?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
When something else is needed
It helps to know what we can’t do too:
- Structural movement, which needs a surveyor or engineer
- Render that’s blown, hollow or coming away
- Walls that need new movement joints cut into them
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Joints and surfaces we work on
- Render & cladding joints
- Façade panels
- Brickwork movement joints
- Copings & trims
- Concrete & block
- Joints between brick and frames
Surface by surface
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it. Tell us what the building has when you get in touch.
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 sealing.