Essex · England
External Mastic in Gubbion's Green
External mastic in Gubbion's Green from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Hard, crazed mastic that has stopped moving
- Joints where the bead has come unstuck
- Moss and dirt in joints with no sealant left
How the job changes by surface
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it, or one the system allows. Tell us what the building has when you get in touch.
External mastic in Gubbion's Green, done properly
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Some surfaces need a primer before sealing. Typical jobs include leaking joints around cladding and façade panels and moss and dirt in joints with no sealant left, on façade panels, concrete & block and copings & trims.
Around Gubbion's Green, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Big or small, you get the same 12-month guarantee in Gubbion's Green and across Essex.
- Location
- Gubbion's Green (CM3)
- Region
- Essex
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
When we arrive, we look over the joints with you first. Surfaces next to the work are protected before work begins. The work generally takes anything from a few hours to several days, depending on the building. For a village or hamlet like Gubbion's Green, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Plan for the work area to be out of bounds to pets and children
- On commercial sites, let us know about site rules
Get a quote
To get a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. We will give you a clear price before any work starts.
Read more
What we’re called out for in Gubbion's Green
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. The sealant in the movement joints takes that strain.
Look out for these signs:
- Rigid filler in a joint that should flex
- Gaps where render, brick and frames meet
- Water getting into walls through failed joints
- Failed sealant between panels on a façade
If you let a flat or house near Cressing station, outside joints that have cracked can let damp into a rental, so check them between lets.
Comparing quotes
- What the cure time is
- What happens if they find a problem under the old sealant
- Who turns up on the day
- How the colour is chosen
Why it’s worth doing now in Gubbion's Green
Sealing over the top of old mastic does not hold for long. New sealant doesn’t bond well to old, weathered sealant, so we always take the old sealant out. Around Gubbion's Green, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why book with us
- Any old sealant cut out fully, not covered over
- Anti-fungal silicone where joints get wet
- Colour agreed with you before work begins
- Sealant colour chosen to suit
Read our cost guide or what customers say.
For landlords and businesses
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we are fully insured.
Landlords and agents in Gubbion's Green can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Deal with leaking gutters that soak the joints below
- Don’t let climbing plants root in the sealant
- Point out the joints to other trades
- Walk round the building once a year and look at the joints
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years, so it’s worth resealing at the first signs.
Nearby places to Gubbion's Green
More services for Gubbion's Green
What external mastic looks like in Gubbion's Green
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.
Managing a site like Great Leighs Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.
Gubbion's Green is about 4 miles south-west of Braintree, in Essex. From the centre of Gubbion's Green to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. We cover 644 towns and villages across Essex. You can also see our page for Chelmsford, roughly 7 miles from Gubbion's Green.
All of CM3 is covered for external mastic, from the main roads to the quietest streets. We also cover the places around Gubbion's Green: Great Leighs (1 mile west), Young's End (1 mile north), Fuller Street (1 mile south-east), Row Green (2 miles north) and Fairstead (2 miles east). We also work in nearby towns such as Chelmsford (7 miles south), Braintree (4 miles north-east), Maldon (10 miles south-east), Billericay (15 miles south), Witham (5 miles south-east) and Wickford (15 miles south).
Around Gubbion's Green
Around Gubbion's Green, our work takes us to homes and buildings near The Castle pub and the streets around them. The closest station to Gubbion's Green is Cressing station, about 2.9 miles north-east. Other landmarks nearby include William Julien Courtauld Hospital (3.2 miles north) and Cressing Temple (3.8 miles east). For a walk, there’s Sandylay and Moat Woods.
Common questions in Gubbion's Green
Do you work for landlords with property near Cressing station?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Do you cover smaller places like Gubbion's Green?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you use backing rod?
Backing rod goes into deeper joints as a matter of course. It sets the sealant depth and prevents three-sided bonding.
Can you do several jobs on one visit?
Of course. Doing several areas at once is normally more efficient.
How long should I leave it?
It depends on the product and the conditions. Before we leave, we’ll tell you the cure time.
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 will confirm what access is needed.
Can you match the colour of my brickwork?
We choose a sealant colour to suit the brick, stone or render so the joint blends in. There’s a wide choice of exterior colours.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.