Greater London · England
External Mastic in Foots Cray
Our applicators work in Foots Cray on sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Weeds or debris growing in open joints
- Panel joints letting water in
- Gaps where render, brick and frames meet
External mastic in Foots Cray, done properly
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two where a rigid filler would soon crack. We are often asked to deal with joints pointed up with cement by mistake and cracked joints where brick meets render or frames, across concrete & block, brickwork movement joints and render & cladding joints.
Working on the outside of a London home means planning access: shared paths, upper floors and parking. In Foots Cray, joints up high may need ladders or other access, which is worth talking through when you book.
You are covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Where
- Foots Cray (DA14, BR5)
- Region
- Greater London
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Landlords, agents and businesses in Foots Cray
If you manage several properties in or around Foots Cray, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
How the job changes by surface
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.
Cladding and façade panels
Cladding and façade panels are normally separated by sealed joints. Each joint gets a sealant that suits the panel and its movement.
External mastic in Foots Cray: local notes
London terraces and converted houses often share gutters, downpipes and walls, so check who is responsible for the outside before booking. Historic houses like Danson House (about 2.8 miles north) are a reminder that the area around Foots Cray has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
If you live in an older home near Parish Church of All Saints, an extension built onto an older house moves differently, and the joint between them takes the strain. As a London address, Foots Cray can be tricky for parking: let us know about parking bays, permits or a driveway. For landlords with property near Sidcup station, split movement joints are easy to miss on a rental until damp shows inside.
Foots Cray is about 1 mile south-east of Sidcup, in Greater London. Homes, rented property, offices and hotels in Foots Cray is covered for external mastic. Every job comes with our one-year guarantee. Foots Cray is one of 764 towns and villages in Greater London we cover for external mastic. London is on our list too, about 11 miles from Foots Cray.
All of DA14 and BR5 is covered for external mastic, from the main roads to the quietest streets. You’ll find streets such as Cray Road, Evry Road and The Avenue. Being close to the A223, Foots Cray is simple for us to get to for external mastic. Other places close to Foots Cray include Ruxley (1 mile east), Albany Park (1 mile north-west), Upper Ruxley (1 mile east), Sidcup (1 mile north-west) and North Cray (2 miles north-east). Further out, we also cover London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (15 miles north-west), St Pancras (13 miles north-west) and Shoreditch (11 miles north-west).
Around Foots Cray
Around Foots Cray, our work takes us to homes and buildings near Foots Cray Meadows, Kemnal Technology College and Walsingham School. For rail, the closest station is Sidcup station, about 1.4 miles north. A little further out are Metropolitan Police Museum (1.3 miles north-west) and Queen Mary's Hospital (0.6 miles west). For a walk, there’s Summer Hill and The Warren.
What we cannot put right
We’ll always be straight with you, so here’s what new sealant will not do:
- Structural movement, which needs a surveyor or engineer
- Adding movement joints to masonry that has none
- Render that is blown, hollow or coming away
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly before booking.
Where we work in Foots Cray
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
- Copings & trims
Aftercare tips
After the cure time, these simple habits help:
- Clear growth from the base of walls and joints
- Get split or bare joints resealed while the damage is small
- Look over the joints every year, ideally after winter
- Keep high-pressure jets off the joints
Only paint over the joint if we’ve confirmed the sealant can take paint. Many exterior sealants aren’t designed to be painted, and paint can crack as the joint moves.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Towns and villages near Foots Cray
More services for Foots Cray
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
How we quote for external mastic
For a quick quote, just ask. The main things that affect it are:
- Mould in or behind the old joints
- Whether the work is at height
- The type of sealant required
- How many rooms, windows or areas are involved
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
What we need to know
Photos by email are helpful but not essential. Please mention:
- Roughly how big the job is
- A few photos by email, if you can
- How we’d reach the joints
- If it’s domestic, commercial or a hotel
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Your questions about external mastic in Foots Cray
Can you do external mastic in Foots Cray?
Yes, Foots Cray is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
Is parking an issue for external mastic in Foots Cray?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
What do you need from me for a quote?
Tell us what needs doing and where. We’ll ask anything else we need to know.
Why do you put foam in the joint first?
We fit closed-cell backing rod wherever the joint depth needs controlling. It sets the sealant depth and prevents three-sided bonding so the bead can stretch.
Is the work guaranteed?
Yes. There’s a 12-month guarantee on every job, wherever you are.
Should I point up the gap in my brickwork?
No. Mortar locks the joint solid, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned.
Can I add another job to the visit?
Yes. Just list everything you need and you’ll get one quote.
How the visit works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours to a few days, depending on the length of joint and the access, and the area is left clean. In Foots Cray, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- 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
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about stairs, lifts or work at height
- Clear items away from the joints we are working on
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Simply ring 0345 464 0079 or send us an email and describe the job.