Greater London · England
External & façade joints in Battersea, Greater London
We cover Battersea for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Sealant pulling away from one side of the joint
- Joints pointed up with cement by mistake
- Gaps where render, brick and frames meet
What we’re called out for in Battersea
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
If you can see any of these, it’s time to have the joints looked at:
- Rain getting behind render or cladding at a joint
- Panel joints letting water in
- Moss and dirt in joints with no sealant left
- Old sealant gone brittle and cracked
Rented homes near Clapham Junction station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What your quote should include
- What preparation is included
- What happens if they find a problem under the old sealant
- Is VAT in the price?
- Who does the work, and how experienced they are
About our external mastic in Battersea
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall so the joint does not stand out. If you have joints where the bead has come unstuck and movement joints filled with mortar instead of sealant, we can help, whatever the surface.
London’s terraces and conversions often share walls, gutters and downpipes with their neighbours, so one failed joint can cause damp for more than one household. For a flat in Battersea, check the lease for who looks after the outside.
Whatever the size of the job, it’s backed by our one-year guarantee in Battersea and across Greater London.
- Location
- Battersea (SW11, SW18, SW4)
- Region
- Greater London
- Guarantee
- One year on every job
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
What else we do in Battersea
FAQs for Battersea
I let a flat near Clapham Junction station. Can you help?
Yes. We work for landlords and letting agents as well as householders. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear price.
Is Battersea in your area for external mastic?
Yes. We work across London and the South East, and Battersea is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job.
Is the work guaranteed?
Yes. Every job comes with a 12-month guarantee.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
How much does external mastic cost in Battersea?
Size, access and the old material all affect the cost. Ask us for a quote.
How long does external mastic last?
That depends on the wall, the weather and the movement. Signs to watch for are cracking, hardening and gaps at the edges and have them redone then.
Will you leave a mess?
We keep the work tidy. Nearby surfaces are protected, and the area is left clean when we finish.
Are you an approved applicator?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
When it isn’t the sealant
We’ll always be straight with you, so here’s what sealant cannot fix:
- Cracking across the wall rather than at a joint
- Subsidence or other structural problems
- Failed render or damaged cladding panels
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before booking.
Where we work in Battersea
- Copings & trims
- Façade panels
- Joints between brick and frames
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
How the job changes by surface
Concrete and blockwork
Big joints in concrete need careful depth control. Backing rod sized to the joint sets it so the sealant is not too deep.
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. If that’s happened, we rake it out and reseal it properly.
Leave it or put it right?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Battersea, the repair is bigger than a sealant job.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or email us.
What you get with us
- Approved under the ARBOMaster scheme
- More than 20 years in sealant work
- 180+ five-star Google reviews
- White, clear, grey or another colour, product permitting
What happens on the day
Most of a good job is in the preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from a few hours to several days, depending on the building. For a job in Battersea, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Before we arrive
- Let us know about stairs, lifts or work at height
- Keep pets and children clear of the area while we work
- On commercial sites, let us know about site rules
How to get a quote
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job.
Related advice
Walls and rooflines in Battersea
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Carlyle's House (about 1.4 miles north) are a reminder that the area around Battersea has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
In the older streets around Clapham Welsh Presbyterian Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep. As a London address, Battersea can be tricky for parking: let us know about parking bays, permits or a driveway.
Battersea is about 3 miles south-east of Kensington, in Greater London. If you need external mastic in Battersea, please ring 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Greater London, Battersea included. We cover 764 towns and villages across Greater London, from the larger towns to small villages.
We work across the SW11, SW18 and SW4 postcode area for external mastic and the streets around it. Streets in the area include York Road, Este Road and Home Road, and we cover them all. Main roads around Battersea include the A3207, which makes travel easy. Other places close to Battersea include Clapham Junction (1 mile north-west), Sands End (1 mile north-west), Chelsea Harbour (1 mile north-west), Wandsworth (1 mile south-west) and Clapham (1 mile east). We also work in nearby towns such as London (4 miles north-east), City of Westminster (4 miles north), Marylebone (4 miles north), Kensington (3 miles north-west), St Pancras (5 miles north-east) and Shoreditch (6 miles north-east).
What’s near Battersea
Typical jobs here are in homes near The Falcon pub, Emanuel School and Imperial Park, among other places. Battersea has its own railway station: Clapham Junction station. Well-known places in the area include Baynard's Castle (4.4 miles north-east) and Southside Wandsworth (1.3 miles south-west). Open spaces near Battersea include Henman Hill and Battersea Park Lake.