Essex · England
External & façade joints in Boyton Cross, Essex
Sealing brickwork movement joints, render, cladding and façade joints for Boyton Cross, backed by a 12-month guarantee. Ask us for a quote.
- Weathered mastic that no longer stretches
- Plants rooting in failed movement joints
- Sealant pulling away from one side of the joint
What we cannot put right
New sealant cannot fix everything, and we’d rather say so up front. Sealant will not put right:
- Cracked brickwork or render that needs a builder or plasterer
- Loose or hollow render, which needs re-rendering
- 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.
Surfaces we seal
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
- Façade panels
- Copings & trims
- Brickwork movement joints
External mastic in Boyton Cross, done properly
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing and we use one wherever it does. Typical jobs include movement joints with cracked, split or missing sealant and joints where the bead has come unstuck, across façade panels, concrete & block and brickwork movement joints.
Older homes in small places like Boyton Cross may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water usually gets in, and they need the right sealant at the right depth.
There’s a 12-month guarantee on every job.
- Location
- Boyton Cross (CM1)
- Wider area
- Essex
- Guarantee
- One year on every job
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
There’s no need to move everything out, just the space around the work. We protect the rest, and the work takes anything from a few hours to several days, depending on the building in most cases. In a small place like Boyton Cross, access is usually the main thing to plan. 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.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Mention any parking rules near the property
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work and give you a clear price.
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What the job involves on each surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.
Walls and rooflines in Boyton Cross
With historic houses such as Hylands (about 3.8 miles south-east) nearby, there’s older building stock in the area around Boyton Cross as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. 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.
If you live in an older home near Church of St Michael and All Angels, older walls, gutters and the joints where extensions meet them need a flexible sealant. For landlords with property near Chelmsford station, split movement joints are easy to miss on a rental until damp shows inside.
Boyton Cross is about 4 miles west of Chelmsford, in Essex. For external mastic in and around Boyton Cross, please ring 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Essex, Boyton Cross included. Boyton Cross is one of 644 towns and villages in Essex where we work.
Postcode districts we cover here for external mastic: CM1. Close by, we work in Roxwell (1 mile south-west), Newney Green (1 mile south), Chalk End (2 miles north-west), Mashbury (2 miles north) and Good Easter (2 miles north-west). We also work in nearby towns such as Chelmsford (4 miles east), Basildon (13 miles south), Braintree (11 miles north-east), Harlow (12 miles west), Brentwood (10 miles south) and Maldon (13 miles east).
Near you in Boyton Cross
Locally, jobs take us to homes and businesses close to The Chequers Inn. Boyton Cross’s nearest station is Chelmsford station, roughly 3.8 miles east. Well-known places in the area include Willingale Doe (3.1 miles west) and Broomfield Hospital (3.6 miles east). Not far away are Newland Grove.
Common problems we fix in Boyton Cross
Sometimes a movement joint was filled with mortar or a rigid filler by mistake. The joint can’t move, so the wall cracks somewhere else instead.
Most people get in touch when they notice something like this:
- Cracked joints where brick meets render or frames
- Sealant pulling away from one side of the joint
- Failed sealant between panels on a façade
- Movement joints filled with mortar instead of sealant
If you look after a building such as Newlands Spring Primary School, larger buildings have long runs of movement joint that eventually need resealing.
What to look for in a quote
- How the colour is chosen
- The length of the guarantee
- How the surfaces are prepared before sealing
- How long to leave it before use
Landlord and commercial work in Boyton Cross
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.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
What affects the cost of external mastic
You’ll get a clear quote before any work starts. It takes into account:
- The product the joint needs
- The number and length of the joints
- Whether the work is at height
- The number of rooms or windows
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Ask us for a quote and we will go through it with you.
What to tell us for a quote
When you call or email, it’s useful to know:
- The rough size of the job
- The problem you’ve noticed
- Pictures of the joints, sent by email
- The address or postcode of the job
Need a quote? Please ring 0345 464 0079 or drop us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Boyton Cross questions
I let a flat near Chelmsford station. Can you help?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or email us with the details for a clear quote.
Can you do external mastic in Boyton Cross?
Yes. We work across London and the South East, and Boyton Cross is part of that. You can phone 0345 464 0079 or email us and let us know what needs doing.
Do you guarantee your work?
Yes. Every job comes with a one-year guarantee.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint.
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.
How much does external mastic cost in Boyton Cross?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Where is Mr Mastic based?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
Will there be a smell?
There can be a smell while the sealant cures. Ventilation helps.