Essex · England
Bocking's Elm External Mastic
Professional external mastic in and around Bocking's Elm, with every bit of old sealant taken out first and a 12-month guarantee.
- Movement joints filled with mortar instead of sealant
- Hard, crazed mastic that has stopped moving
- Gaps where render, brick and frames meet
What sealant work can’t fix
A few problems are outside what sealant work can do:
- Cracking across the wall rather than at a joint
- Subsidence or other structural problems
- Render that is blown, hollow or coming away
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly before you book.
Where we work in Bocking's Elm
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Concrete & block
- Joints between brick and frames
About our external mastic in Bocking's Elm
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant. We’re often asked to deal with damp patches traced to an open external joint and old sealant gone brittle and cracked, across render & cladding joints, joints between brick and frames and concrete & block.
Homes around Bocking's Elm range from older cottages to newer houses, with walls and rooflines of every type. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
Big or small, you get the same 12-month guarantee in Bocking's Elm and across Essex.
- Place
- Bocking's Elm (CO16, CO15)
- Wider area
- Essex
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Look over the joints every year, ideally after winter
- Get split or bare joints resealed while the damage is small
- Don’t let climbing plants root in the sealant
- Keep water from gutters off the wall
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges.
Once a joint can’t move, the wall finds another way, often as cracks near the joint. Catch it early and you reduce the risk.
Leave it or put it right?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost near the open joint, so the problem grows beyond the joint itself. In a smaller place like Bocking's Elm, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What you get with us
- Every job guaranteed for a year
- We leave the area clean and tidy
- Sealant colour chosen to suit
- Experience in homes, commercial sites and hotels
Take a look at our cost guide and what customers say.
The process
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it usually takes anything from a few hours to several days, depending on the building. For a job in Bocking's Elm, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- 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.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- Tell us about any water getting in
- Keep children and pets away from the work area
Getting a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved and give you a clear price.
Advice
DIY versus a professional finish
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.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Housing providers, facilities teams and property managers book us too in Bocking's Elm and across Essex. We can quote a run of properties together.
Do you need external mastic in Bocking's Elm?
Every building moves. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. The sealant in the movement joints takes that strain.
If you can see any of these, it’s time to have the joints looked at:
- Rigid filler in a joint that should flex
- Sealant that has lost its bond to the brick or render
- Moss and dirt in joints with no sealant left
- Movement joints with cracked, split or missing sealant
Thorpe Hall, about 3.8 miles north-east, is one of the historic houses in the wider area around Bocking's Elm.
Questions to ask before you book
- Whether they’re fully insured
- What product goes in the joint
- The length of the guarantee
- Who turns up on the day
Bocking's Elm buildings and the weather
Bocking's Elm is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on movement joints and outside wall joints, especially on the side facing the sea. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as St Clare's Catholic Primary School, its movement joints, gutters and trims need looking after like any other building’s. Letting a property close to Clacton-On-Sea station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Bocking's Elm is about 1 mile west of Clacton-on-Sea, in Essex. For external mastic in and around Bocking's Elm, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We’re based in Crawley and cover Essex, Bocking's Elm included. Our area takes in 644 places across Essex, large and small. Our Chelmsford page covers work nearby, about 28 miles away.
Here we cover the CO16 and CO15 postcode area for external mastic. Streets in the area include Cloes Lane, Cross Road and Addis Road, and we cover them all. We also cover the places around Bocking's Elm: Clacton-on-Sea (1 mile east), St Osyth Heath (2 miles north-west), Row Heath (2 miles north), Little Clacton (2 miles north) and Weeley Heath (3 miles north). Further out, we also cover Colchester (11 miles north-west), Harwich (11 miles north-east), Camulodunum (12 miles north-west), Greenstead (10 miles north-west), Wivenhoe (8 miles north-west) and Brightlingsea (4 miles west).
Near you in Bocking's Elm
Around Bocking's Elm, our work takes us to homes and buildings near Bishops Park College, Clacton County High School and Pickers Ditch Meadow. For rail, the closest station is Clacton-On-Sea station, roughly 1.3 miles south-east of the centre. Not far away are Howlands Marsh.
Common questions in Bocking's Elm
Is Bocking's Elm within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Does living near the coast affect external mastic in Bocking's Elm?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Do you work at height?
That depends on how high the joints are and the ground below. Ground-floor joints are simple; for higher ones, send details and we’ll confirm the access.
How often do external joints need resealing?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. Check them each year and reseal when they split or harden. Every job carries our one-year guarantee.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
Do I have to be there?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
Do you work for landlords and businesses?
Yes, often. Several properties can go on one quote, and between tenancies is a good time for the work.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us and we are fully insured.