Essex · England
External Mastic in Flacks Green
Sealing brickwork movement joints, render, cladding and façade joints in Flacks Green, with a 12-month guarantee on every job. Call for a quick quote.
- Gaps where render, brick and frames meet
- Water getting into walls through failed joints
- Old sealant gone brittle and cracked
What we do, step by step
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes anything from a few hours to several days, depending on the building. For a village or hamlet like Flacks Green, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- For business premises, tell us about site rules or sign-in
- Let us know about parking restrictions
Ask for a quote
For external mastic in Flacks Green, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Related advice
How we handle external mastic in Flacks Green
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 have joints with sealant missing in places and failed sealant between panels on a façade, we can help, on concrete & block, copings & trims and joints between brick and frames alike.
Older homes in small places like Flacks Green may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Each job carries a 12-month guarantee.
- Location
- Flacks Green (CM3)
- Region
- Essex
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Landlord and commercial work in Flacks Green
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
We also work for property managers and facilities teams. Several sites can be quoted together, and we are fully insured for the work.
DIY sealant or a professional job?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Nearby places to Flacks Green
Other services in Flacks Green
What sealant work cannot fix
We will always be straight with you, so here’s what new sealant won’t do:
- Render that is blown, hollow or coming away
- Structural movement, which needs a surveyor or engineer
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If you’re not sure, just ring 0345 464 0079 or email us and we will give you a straight answer before booking.
What we seal
- Façade panels
- Brickwork movement joints
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
Common questions in Flacks Green
Can you do external mastic in Flacks Green?
Yes. Our work covers London and the South East, and Flacks Green is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we’ll send you a clear quote.
I let a flat near Hatfield Peverel station. Can you help?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
What does external mastic cost?
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.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
What is a movement joint?
Walls move with heat, cold and moisture, so long walls have planned gaps to take that movement. It’s closed with backing rod and a flexible sealant.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
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.
What affects the quote in Flacks Green
The price is agreed before any work begins. It takes into account:
- Working hours on commercial sites
- The number of rooms or windows
- Mould in or behind the old joints
- The amount of work
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What to tell us for a quote
When you contact us, these details help:
- How we’d reach the joints
- Where the property is
- The rough size of the job
- The type of property
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we’ll explain what’s involved.
Why it’s worth doing now in Flacks Green
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing. Older cottages and farmhouses around Flacks Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why us?
- Over 20 years’ experience
- Sanitary silicone with an anti-fungal additive in wet areas
- Colour agreed with you before any work starts
- We leave the area clean and tidy
Take a look at our cost guide and customer reviews.
What external mastic looks like in Flacks Green
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.
Homes close to United Reformed Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant. For landlords with property near Hatfield Peverel station, split movement joints are easy to miss on a rental until damp shows inside. If you look after a building such as Terling Church of England Voluntary Aided Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Flacks Green is about 3 miles west of Witham, in Essex. We carry out external mastic for homes and businesses in Flacks Green and nearby. Flacks Green is one of 644 towns and villages in Essex where we work for external mastic.
We cover every part of CM3 for external mastic and the streets around it. We also cover the places around Flacks Green: Gambles Green (1 mile north), Terling (1 mile north-east), Fuller Street (1 mile north-west), Fairstead (1 mile north) and Gubbion's Green (3 miles north-west). Further out, we also cover Chelmsford (5 miles south-west), Braintree (6 miles north), Maldon (7 miles south-east), Billericay (13 miles south-west), Rayleigh (15 miles south) and Witham (3 miles east).
Landmarks near Flacks Green
In Flacks Green, that means homes and buildings near The Rayleigh Arms. For rail, the closest station is Hatfield Peverel station, about 2.1 miles south-east of the centre. A little further out are Broomfield Hospital (4.4 miles south-west) and Cressing Temple (3.3 miles north-east). Not far away are Sandylay and Moat Woods.
Aftercare tips
Looking after new joints is easy:
- Check external joints each spring
- Get split or bare joints resealed while the damage is small
- Make sure movement joints aren’t pointed over
- Point out the joints to other trades
Don’t let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick.