Essex · England
External & façade joints in Langley, Essex
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Langley and across Essex. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Failed seals between different materials
- Moss and dirt in joints with no sealant left
- Sealant that has lost its bond to the brick or render
External mastic for homes and businesses in Langley
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We take the old material out and do it properly. We work on concrete & block, render & cladding joints and copings & trims, and people most often call us about joints pointed up with cement by mistake and rain getting behind render or cladding at a joint.
In a village or hamlet like Langley, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or send us an email.
- Location
- Langley (CB11)
- Wider area
- Essex
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Signs you need external mastic in Langley
Poor preparation causes many early failures: dusty or wet faces, no primer where one was needed, or old sealant left in. The new sealant then lets go long before it should.
Most people get in touch when they notice something like this:
- Sealant pulling away from one side of the joint
- Failed sealant between panels on a façade
- Water getting into walls through failed joints
- Weathered mastic that no longer stretches
Letting a property close to Audley End station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What your quote should include
- Which colour the sealant will be
- When the joint can take water or movement
- Whether they seal over old material or remove it
- Whether the sealant suits the joint
What the job involves on each surface
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two.
Render joints
Water behind render can lead to blown patches. Resealing the joints early keeps water out and protects the render itself.
What affects the cost of external mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Whether there’s mould to deal with
- The type of sealant required
- Any working-time requirements on site
- The old material and how stubborn it is
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 we need extra access for height. Your quote takes all of that into account.
What we need to know
You do not need to know the technical terms. Just tell us:
- If someone has resealed it before
- The address or postcode of the job
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
Want a quote for external mastic? Please ring 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Outside joints around Langley
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.
For an older house near a landmark such as Church of St John the Evangelist, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Langley is about 6 miles west of Saffron Walden, in Essex. For external mastic in and around Langley, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We cover Essex from our Crawley base. Our area takes in 644 places across Essex, from the larger towns to small villages. Chelmsford is on our list too, around 24 miles away.
Jobs for external mastic in CB11 works the same way as everywhere else we cover. Other places close to Langley include Arkesden (2 miles east), Starling's Green (3 miles south), Hill Green (3 miles south-east), Clavering (3 miles south-east) and Wicken Bonhunt (3 miles south-east). Larger places within reach include Saffron Walden (6 miles east), Great Dunmow (14 miles south-east), Stansted Mountfitchet (8 miles south-east), Elsenham (8 miles south-east), Little Parndon (15 miles south) and Netteswell (15 miles south).
Around Langley
The closest station to Langley is Audley End station, about 4.5 miles east of the centre. Well-known places in the area include The Warren (1.6 miles west).
What else we do in Langley
Your questions about external mastic in Langley
Do you work for landlords with property near Audley End station?
Yes, we work for letting agents and landlords. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear price.
Will you come out to Langley?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
When will the joints need doing again?
That varies with the weather the wall faces, how much it moves and the sealant used. Treat it as a maintenance item and look at it yearly and reseal when it splits.
What sealant do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
How long does external mastic take?
It depends on the size of the job, but most jobs take anything from a few hours to several days, depending on the building. We’ll give you a better idea when we quote.
Can a movement joint be filled with mortar?
No. Cement or mortar cannot stretch, so the joint stops doing its job. If it has already been filled, we can usually cut it out and reseal it.
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Leave the joints unpainted unless we’ve said otherwise
- Act on the first splits you see
- Never let anyone fill a movement joint with mortar
- Tell anyone working on the walls about the movement joints
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
A joint that has stopped moving pushes the movement elsewhere, generally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
Landlords, agents and businesses in Langley
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
For anyone letting property in or around Langley, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
What happens on the day
There’s no need to move everything out before we come, only the area right around the joints. Everything nearby is protected, and the job takes anything from a few hours to several days, depending on the building for a typical job. For a village or hamlet like Langley, 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.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Let us know about stairs, lifts or work at height
- Plan for the work area to be out of bounds to pets and children
Getting a quote
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear price before any work starts.