Greater London · England
External & façade joints in Kenley, Greater London
Problem with your movement joints in Kenley? We remove the old material, prepare the joints and seal them properly.
- Sealant pulling away from one side of the joint
- Cracked joints where brick meets render or frames
- Joints pointed up with cement by mistake
External mastic in Kenley, done properly
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a colour to suit. We work on render & cladding joints, copings & trims and façade panels, and the jobs we see most are sealant pulling away from one side of the joint and movement joints with cracked, split or missing sealant.
Outside work in London starts with access: side passages, upper floors and where to park. For a home in Kenley, tell us how high the joints are and how to reach the back of the building.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Location
- Kenley (CR8, CR2)
- Region
- Greater London
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Kenley buildings and the weather
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. With historic houses such as Addington Palace (about 3.3 miles north-east) nearby, there’s older building stock in the area around Kenley as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
If you look after a building such as Harris Primary Academy Kenley, larger buildings have long runs of movement joint that eventually need resealing. For landlords with property near Kenley station, outside joints that have cracked can let damp into a rental, so check them between lets.
Kenley is about 1 mile south-east of Purley, in Greater London. Wherever you are in the CR8 postcode area, our applicators can take on external mastic. Our area takes in 764 places across Greater London, from the larger towns to small villages. London is on our list too, about 12 miles from Kenley.
Here we cover the CR8 and CR2 postcode area for external mastic. If you need external mastic at a property on Oaks Road, Park Road and Roke Road or anywhere close by, our applicators can take on the job. With the A22 close by, Kenley is simple for us to get to for external mastic. Close by, we work in Riddlesdown (1 mile north), Sanderstead (1 mile north-east), Whyteleafe (1 mile south-east), Hamsey Green (1 mile east) and South Croydon (2 miles north). We also work in nearby towns such as London (12 miles north), City of Westminster (13 miles north), Marylebone (14 miles north), Kensington (13 miles north), St Pancras (14 miles north) and Shoreditch (14 miles north).
Near you in Kenley
Around Kenley, our work takes us to homes and buildings near Dollypers Hill and Riddlesdown Collegiate. Kenley has its own railway station: Kenley station. Well-known places in the area include St George's Walk (3.4 miles north) and Croydon Airport Visitor Centre (2.4 miles north). Green spaces nearby include Duppas Hill and Foxley Wood.
Landlords, agents and businesses in Kenley
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
How the visit works
Once we’re on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes anything from a few hours to several days, depending on the building. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Kenley. A visitor permit or a nearby bay makes the visit run more smoothly.
- 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.
Before we arrive
- On commercial sites, let us know about site rules
- Let us know if you’ve seen damp or leaks
- Try not to wet indoor joints just before the visit
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or send us an email.
Advice
Common questions in Kenley
Do you work for landlords with property near Kenley station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
Is parking a problem for a job in Kenley?
Parking in Kenley, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
What does external mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. Then phone 0345 464 0079 or send us an email.
Is it OK to seal over old sealant?
No, because it fails. We remove every bit of old sealant first, so the new sealant bonds properly.
Will the old sealant be removed?
Yes, every time. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
What is a movement joint?
Walls move with heat, cold and moisture, and planned joints take up that movement. It’s closed with backing rod and a flexible sealant.
DIY sealant or a professional job?
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.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Signs you need external mastic in Kenley
Poor preparation causes many early failures: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
If you can see any of these, it’s time to have the joints looked at:
- Joints where the bead has come unstuck
- Old sealant gone brittle and cracked
- Failed seals between different materials
- Leaking joints around cladding and façade panels
In the older streets around Church of All Saints, older walls, gutters and the joints where extensions meet them need a flexible sealant.
What to look for in a quote
- Are they insured?
- How the joint is cleaned and prepared
- When the joint can take water or movement
- Who does the work, and how experienced they are
What else we do in Kenley
How the job changes by surface
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. We cut out the old sealant and reseal with a product suited to both surfaces.
Render joints
Rendered walls have joints at beads, openings and changes of material. We reseal them with a flexible exterior sealant that suits the render colour.
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Make sure movement joints are not pointed over
- Tell anyone working on the walls about the movement joints
- Have failed joints looked at early
- Wash walls gently around the sealant
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead and let water in behind.
A joint that has stopped moving pushes the movement elsewhere, usually as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
When something else is needed
We won’t take on work that will not last, so here’s what sealant cannot put right:
- Adding movement joints to masonry that has none
- Cracking across the wall rather than at a joint
- Subsidence or other structural problems
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly.
What we seal
- Copings & trims
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Concrete & block