Greater London · England
External & façade joints in Southend, Greater London
Problem with your movement joints in Southend? We remove the old material, prepare the joints and seal them properly.
- Moss and dirt in joints with no sealant left
- Old sealant gone brittle and cracked
- Joints where the bead has come unstuck
Your questions about external mastic in Southend
Is parking a problem for a job in Southend?
Parking in Southend, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
I let a flat near Bellingham station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Is the work guaranteed?
Yes, for a year. If anything is not right with the work within the year, let us know and we will sort it.
Is it OK to fill a movement joint with cement?
No, not where the gap is a movement joint. Pointing it stops it working. We will reseal it with a flexible sealant.
Do you cover Southend?
Yes. We cover Southend and the rest of Greater London, as part of our work across South East England, London and Scotland. For a quote, ring 0345 464 0079 or drop us an email.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll give you the cure time for the product we used.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
External mastic for homes and businesses in Southend
For buildings in Southend, we reseal external joints of all kinds, from brick movement joints to cladding panels. The preparation is the same whatever the wall: clean joint faces and the right depth. We work on brickwork movement joints, joints between brick and frames and copings & trims, and people most often call us about sealant that has lost its bond to the brick or render and panel joints letting water in.
Working on the outside of a London home means planning access: shared paths, upper floors and parking. For a home in Southend, tell us how high the joints are and how to reach the back of the building.
Every job is covered by our 12-month guarantee.
- Where
- Southend (SE6, SE26, SE23)
- Region
- Greater London
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of external mastic
For a quick quote, just ask. The main things that affect it are:
- The type of sealant required
- The number of rooms or windows
- Whether the work is at height
- Mould in or behind the old joints
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first.
What we need to know
You do not need to know the technical terms. It helps if you can tell us:
- Roughly how big the job is
- What the problem is, such as mould, gaps, leaks or cracking
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
Asking for a quote is easy: let us know the job and the location and its rough size. A few photos by email make the job easier to understand, and we will come back to you with a quote.
What we cannot put right
A few problems are outside what sealant work can do:
- Structural movement, which needs a surveyor or engineer
- Rising or penetrating damp from elsewhere in the wall
- Cracking across the wall rather than at a joint
If you’re not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Joints and surfaces we work on
- Copings & trims
- Façade panels
- Joints between brick and frames
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
Why act early in Southend
An open joint keeps letting water into the wall with every downpour. In cold weather, frost can damage wet brick and render, so the problem grows beyond the joint itself. In a flat in Southend, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we will explain what it covers.
Why book with us
- We’re fully insured
- Anti-fungal sanitary silicone in wet areas
- We never seal over old sealant
- Rated 4.9 stars on Google
See what affects the cost and what customers say.
External mastic in Southend: local notes
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. London terraces and converted houses often share gutters, downpipes and walls, so check who is responsible for the outside before booking.
Rented homes near Bellingham station change hands often, and split movement joints are easy to miss on a rental until damp shows inside. Southend is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. If you look after a building such as Elfrida Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Southend is about 2 miles north of Beckenham, in Greater London. Whether you’re in the middle of Southend or further out, we cover external mastic for every kind of property, from flats and houses to offices and hotels. 764 places in Greater London are on our list. For nearby work, see our London page, about 6 miles away.
Work in SE6, SE26 and SE23 is quoted and booked the same way as anywhere else. That includes homes and businesses on Oslac Road, Orford Road and Aitken Road. With the A2218 close by, Southend is simple for us to get to. If you’re just outside Southend, we cover Bellingham (1 mile north), Bell Green (1 mile west), Catford (1 mile north-east), Perry Vale (1 mile west) and Sydenham (1 mile west). Further out, we also cover London (6 miles north-west), City of Westminster (8 miles north-west), Marylebone (8 miles north-west), Kensington (9 miles north-west), St Pancras (8 miles north-west) and Shoreditch (7 miles north).
Around Southend
We work in homes and buildings around Allenby Tutorial Trust, Sedgehill School and Forster Memorial Park. Southend has its own railway station: Bellingham station. A little further out are Prefab Museum (1 mile east) and Lewisham Shopping Centre (2.2 miles north). For a walk, there’s Downham Woodland Walk and Knight's Hill.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Point out the joints to other trades
- Leave the joints unpainted unless we have said otherwise
- Make sure movement joints aren’t pointed over
- Avoid pressure-washing directly into sealant joints
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Act while the splits are small. At that stage it’s a simple cut out and reseal.
Towns and villages near Southend
Also in Southend
How it works
All our tools and materials come with us in the van. Once we have agreed what’s being done, we protect the area and start. It normally takes a few hours to a few days, depending on the length of joint and the access. In Southend, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Move anything stored near the joints
- Let us know if you’ve seen damp or leaks
- Tell us if parking is tricky
Get a quote
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or email us.
Related advice
Landlord and commercial work in Southend
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
For anyone letting property in or around Southend, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
What the job involves on each surface
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap.
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind and helps it last.