Greater London · England
External & façade joints in Barking Riverside, Greater London
Our applicators work in Barking Riverside on sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Leaking joints around cladding and façade panels
- Moss and dirt in joints with no sealant left
- Weathered mastic that no longer stretches
External mastic in Barking Riverside
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. If you’re dealing with cracked joints where brick meets render or frames and joints pointed up with cement by mistake, we can help.
Newer London blocks are built with movement joints in brick and render, and with cladding joints sealed with mastic. Older terraces have their own weak points: gutter joints, roofline trims and the joint where an extension meets the original wall.
Big or small, it’s backed by our one-year guarantee.
- Place
- Barking Riverside (IG11, RM9)
- Wider area
- Greater London
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Why act early in Barking Riverside
Water gets in through a failed movement joint, behind render and cladding. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Leaving a failed joint generally makes the job bigger, not smaller. If you’re unsure, phone 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
What you get with us
- A sealant colour to suit the surroundings
- 4.9 on Google from 180+ five-star reviews
- Fully insured
- 20+ years of sealant experience
See our cost guide or customer reviews.
Nearby places to Barking Riverside
More services for Barking Riverside
Your questions about external mastic in Barking Riverside
I let a flat near Barking Riverside station. Can you help?
Yes. We work for landlords and agents as well as homeowners. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Do you cover Barking Riverside for external mastic?
Yes. Our work covers London and the South East, and Barking Riverside is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear price.
What is a movement joint?
Most straight vertical gaps in brickwork are movement joints. It gives the wall room to move and needs a flexible seal, not mortar.
Should I point up the gap in my brickwork?
No. Rigid materials cannot move with the wall and the joint fails. If it has already been filled, we can normally cut it out and reseal it.
How long does the job take?
That depends on the amount of work, but most jobs take anything from a few hours to several days, depending on the building. We’ll tell you when we quote.
Will the new joint stand out?
There’s a good range of exterior colours, including greys, browns, whites and stone tones. We pick the one that suits your wall best.
Can you work on commercial sites?
Yes. We’ve worked for hotels, offices and other businesses.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
How the visit works
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take anything from a few hours to several days, depending on the building. In a London area like Barking Riverside, the main things to plan are parking and access: let us know about parking, the floor we will be working on and any lift or shared entrance.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Try not to wet indoor joints just before the visit
- Mention any tricky access
- Keep pets and children clear of the area while we work
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Related advice
Walls and rooflines in Barking Riverside
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Eastbury Manor House (about 1 mile north-west) nearby, there’s older building stock in the area around Barking Riverside as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
If you let a flat or house near Barking Riverside station, outside joints that have cracked can let damp into a rental, so check them between lets. Schools such as George Carey Church of England Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Barking Riverside is about 1 mile south-east of Barking, in Greater London. From the centre of Barking Riverside to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. 764 places in Greater London are on our list. We also work in London, about 9 miles from Barking Riverside.
Our applicators cover all of the IG11 and RM9 postcode area for external mastic. Local streets include Minter Road, Thames Road and Hugget Road. We also cover the places around Barking Riverside: Thames View Estate (1 mile north-west), Castle Green (1 mile north-east), Dagenham Dock (1 mile east), Thamesmead (1 mile south-east) and Dagenham Green (2 miles east). Within a short drive, we also cover London (9 miles west), City of Westminster (11 miles west), Marylebone (11 miles west), Kensington (14 miles west), St Pancras (10 miles west) and Shoreditch (8 miles west).
Landmarks near Barking Riverside
We work in homes and buildings around Riverside School and Mayesbrook Park. There’s a railway station in Barking Riverside itself: Barking Riverside station. Other landmarks nearby include East End Women's Museum (1.8 miles north-west) and Barking Community Hospital (1.2 miles north-west). Not far away are Ripple Nature Reserve.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Do you need external mastic in Barking Riverside?
If plants are growing out of a joint, the sealant has normally failed or was never there. Dirt and roots then trap moisture in the joint and speed up the damage.
People usually contact us after spotting one of these:
- Leaking joints around cladding and façade panels
- Brick movement joints where the sealant has split
- Plants rooting in failed movement joints
- Old sealant gone brittle and cracked
Homes close to Christ Church include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Questions to ask before booking
- Are they insured?
- Which colour the sealant will be
- Whether all the old sealant comes out first
- Whether VAT is included
Keeping the joints in good condition
So the new joints stay in good condition:
- Avoid pressure-washing directly into sealant joints
- Fix overflowing gutters above sealed joints
- Show decorators and builders where the movement joints are
- Ask before painting over external sealant
Keep pressure washers away from the sealant. High-pressure water can lift the edges.
Once a joint can’t move, the wall finds another way, normally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
Landlords, agents and businesses in Barking Riverside
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
What the job involves on each surface
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. Their movement joints are sealed over backing rod with a flexible sealant.
Cladding and façade panels
Panels heat up and cool down quickly, so the joints work hard every day. The sealant is chosen with that in mind.