Greater London · England
External & façade joints in Tooting, Greater London
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Tooting and across Greater London. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Rain getting behind render or cladding at a joint
- Cracked joints where brick meets render or frames
- Rigid filler in a joint that should flex
External mastic in Tooting, done properly
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, leaving it bonded to two faces so it can move with the wall. Typical jobs include failed sealant between panels on a façade and cracked joints where brick meets render or frames, on copings & trims, brickwork movement joints and façade panels.
Outside work in London starts with access: side passages, upper floors and where to park. In Tooting, joints up high may need ladders or other access, which is worth talking through when you book.
All our work comes with our 12-month guarantee.
- Where
- Tooting (SW17, SW19, CR4)
- Wider area
- Greater London
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Point out the joints to other trades
- Don’t let climbing plants root in the sealant
- Walk round the building once a year and look at the joints
- Act on the first splits you see
Do not let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage which cost more to put right than the joint.
External mastic in Tooting: local notes
With historic houses such as Southside House (about 3 miles west) nearby, there’s older building stock in the area around Tooting as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. In terraces and conversions, gutters and walls are often shared with the neighbours, so check who is responsible for the outside before booking.
Homes close to St Augustine include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain. For site and facilities teams at buildings such as St Boniface RC Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Letting a property close to Tooting station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Tooting is about 3 miles south-west of Stockwell, in Greater London. Whether you’re in the middle of Tooting or further out, 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. For nearby work, see our London page, about 6 miles away.
Our applicators cover all of SW17, SW19 and CR4 for external mastic. External mastic is available to properties on Vant Road, Byton Road and Avarn Road. We also cover the places around Tooting: Tooting Bec (1 mile north-west), Colliers Wood (1 mile south), Furzedown (1 mile east), Streatham Park (1 mile east) and Summerstown (1 mile north-west). Larger places within reach include London (6 miles north-east), City of Westminster (6 miles north), Marylebone (6 miles north), Kensington (5 miles north), St Pancras (7 miles north) and Shoreditch (8 miles north-east).
What’s near Tooting
Typical jobs here are in homes near King's Head pub, Ensham School and Graveney School. For rail, the closest station is Tooting station, roughly 0.6 miles south. Other landmarks nearby include Southside Wandsworth (2.2 miles north-west) and Grove Hospital (within half a mile west). Green spaces nearby include Battersea Park Lake and Myrna Close.
Leave it or put it right?
Sealing over the top of old mastic doesn’t hold for long. New sealant doesn’t bond well to old, weathered sealant, so the old joint is cut out fully first. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler.
What it costs depends on the amount of work, how much old material has to come out and access to the work. We give a clear quote before any work starts.
Why choose Mr Mastic in Tooting
- Approved under the ARBOMaster scheme
- A 12-month guarantee on all work
- Trusted Arbo and Everbuild sealants
- Colour agreed with you before any work starts
See what affects the cost and customer reviews.
How it works
You don’t need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the job takes a few hours to a few days, depending on the length of joint and the access for a typical job. In a London area like Tooting, the main things to plan are parking and access: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Mention any parking rules near the property
- Keep children and pets away from the work area
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.
Read more
Different surfaces, different methods
Cladding and façade panels
Cladding and façade panels are usually separated by sealed joints. We reseal them with a sealant suited to the panel material.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. We size the backing rod to the gap and keep the sealant to the right depth.
Landlord and commercial work in Tooting
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Landlords and agents in Tooting can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
More services for Tooting
Honest limits
A few problems are outside what sealant work can do:
- Adding movement joints to masonry that has none
- Subsidence or other structural problems
- Rising or penetrating damp from elsewhere in the wall
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before booking.
What we seal
- Concrete & block
- Joints between brick and frames
- Façade panels
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
Questions from Tooting
I let a flat near Tooting station. Can you help?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
Can you do external mastic in Tooting?
Yes. Our work covers London and the South East, and Tooting is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Can I do it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Do I have to be there?
We need access to the joints, so we will agree that with you when we book. Indoors, that normally means someone at home.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status.
Why do you put foam in the joint first?
The foam is closed-cell backing rod. It keeps the sealant at the right depth and bonded to the sides only.
Quotes for external mastic in Tooting
For a quick quote, just ask. What matters most is:
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
- The type of sealant required
- The old material and how stubborn it is
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Asking for a quote
To make quoting easier, please include:
- Photos by email, if that’s easy
- If someone has resealed it before
- What’s wrong with the joints now
- Access, such as stairs, a lift or height
Want a quote for external mastic? Please ring 0345 464 0079 or email us and tell us about the job. We’ll explain what we’d do and give you a clear quote before work begins.