Essex · England
External & façade joints in Boxted Cross, Essex
We cover Boxted Cross for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Joints with sealant missing in places
- Rigid filler in a joint that should flex
- Rain getting behind render or cladding at a joint
External mastic for homes and businesses in Boxted Cross
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. The colour is chosen to suit the brick or render so the line blends in. If you have sealant that has lost its bond to the brick or render and weathered mastic that no longer stretches, we can help, whatever the surface.
External sealant needs dry, clean surfaces, so work around Boxted Cross is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
We stand behind the work with a one-year guarantee, so you are covered after we have gone.
- Location
- Boxted Cross (CO4)
- Wider area
- Essex
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What we’re called out for in Boxted Cross
Every building moves. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. All of that ends up in the joint sealant.
Most people get in touch when they notice something like this:
- Sealant pulling away from one side of the joint
- Joints with sealant missing in places
- Panel joints letting water in
- Old sealant gone brittle and cracked
Rented homes near Colchester station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Questions to ask before booking
- Whether VAT is included
- What insurance they hold
- How the surfaces are prepared before sealing
- Whether all the old sealant comes out first
How the job changes by surface
Render joints
The face of render can be soft, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it. Send us any details you have about the façade.
Your questions about external mastic in Boxted Cross
Can you help a landlord with a rental near Colchester station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Do you cover Boxted Cross for external mastic?
Yes, Boxted Cross is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Will the new joint stand out?
We aim for a joint that suits the wall rather than one that jumps out. We will talk through colour options before we start from the range available.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Boxted Cross and the rest of Essex, along with the rest of our area.
How much does external mastic cost in Boxted Cross?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Do you seal joints where cladding meets other materials?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. The colour is chosen to suit.
Do you use backing rod?
The foam is closed-cell backing rod. It keeps the sealant at the right depth and bonded to the sides only, which would stop it stretching.
Should I point up the gap in my brickwork?
No. A mortar-filled joint can’t move, so the movement cracks the wall elsewhere. Use a flexible sealant with backing rod.
Should I try it myself first?
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.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Outside joints around Boxted Cross
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Castle House (about 3.4 miles east) are a reminder that the area around Boxted Cross has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Homes close to Church of St Peter include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep. For site and facilities teams at buildings such as Boxted St Peter's Church of England School, its movement joints, gutters and trims need looking after like any other building’s.
Boxted Cross is about 5 miles north of Colchester, in Essex. From the centre of Boxted Cross to the outskirts, we cover external mastic for every kind of property. Our area takes in 644 places across Essex, from the larger towns to small villages. We also work in Chelmsford, about 24 miles from Boxted Cross.
Postcode districts we cover here for external mastic: CO4. We cover properties on Pippin Drive, Carters Hill and Hill Farm Way. We also cover Boxted (1 mile south-west), Workhouse Hill (1 mile west), Langham (1 mile south-east), Hornestreet (1 mile east) and Thorington Street (2 miles north). Larger places within reach include Colchester (5 miles south), Clacton-on-Sea (15 miles south-east), Harwich (15 miles east), Camulodunum (5 miles south), Halstead (12 miles west) and Greenstead (5 miles south).
Around Boxted Cross
Locally, jobs take us to homes and businesses close to Shepherd and Dog pub, among other places. Boxted Cross’s nearest station is Colchester station, about 3.9 miles south. A little further out are Colchester Castle (4.5 miles south) and Severalls Hospital (2.7 miles south). Open spaces near Boxted Cross include Westhouse Wood.
Keeping the joints in good condition
So the new joints stay in good condition:
- Check external joints each spring
- Keep soil, plants and ivy away from the joints
- Deal with leaking gutters that soak the joints below
- Leave the joints unpainted unless we’ve said otherwise
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
Also near Boxted Cross
More services for Boxted Cross
What affects the quote in Boxted Cross
For a quick quote, just ask. The main things that affect it are:
- Any working-time requirements on site
- Which sealant suits the joint
- Whether there’s mould to deal with
- Access and height
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What we need to know
You don’t need to know the technical terms. Just tell us:
- Whether it has been sealed before
- Whether it’s a home or a business
- How many joints, rooms or windows are involved
- The address or postcode of the job
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.
What sealant work can’t fix
New sealant cannot fix everything, and we’d rather say so up front. It won’t solve:
- Structural movement, which needs a surveyor or engineer
- Damp that is not coming from the joint
- Cutting new joints into brickwork, which is building work rather than sealant work
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Where we work in Boxted Cross
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
- Façade panels
How it works
We keep the work tidy and contained to the area we are working on, 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 like Boxted Cross needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
Getting ready for the visit
- Clear items away from the joints we’re working on
- Let us know about stairs, lifts or work at height
- Keep children and pets away from the work area
Getting a quote
If you’re in Boxted Cross and need external mastic, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.