Greater London · England
Little Venice External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Little Venice and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Rigid filler in a joint that should flex
- Gaps where render, brick and frames meet
- Weeds or debris growing in open joints
External mastic in Little Venice
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we’ll confirm what access is needed. Typical jobs include joints where the bead has come unstuck and brick movement joints where the sealant has split, across render & cladding joints, copings & trims and joints between brick and frames.
Modern London flats rely on sealed movement joints and cladding joints. Period houses have different weak points, such as gutter joints, trims and the line where an extension meets the old wall, and both kinds of building are found across London.
All our work is covered by a one-year guarantee, wherever you are in Greater London.
- Place
- Little Venice (W2, W9, NW8)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What we can’t put right
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Structural movement, which needs a surveyor or engineer
- Loose or hollow render, which needs re-rendering
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Where we work in Little Venice
- Render & cladding joints
- Façade panels
- Brickwork movement joints
- Concrete & block
- Copings & trims
- Joints between brick and frames
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
Your questions about external mastic in Little Venice
I let a flat near London Paddington station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Is parking a problem for a job in Little Venice?
Parking in Little Venice, as in most of London, takes a little 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 put in the joint?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Why do you put foam in the joint first?
We fit closed-cell backing rod wherever the joint depth needs controlling. It controls the depth and stops the sealant bonding to the back.
Can I add another job to the visit?
Of course. Doing several areas at once is usually more efficient.
How long does external mastic take?
That depends on the amount of work, but as a guide it takes a few hours for a handful of joints, longer for a whole elevation. We will tell you when we quote.
Is the work guaranteed?
Yes. Every job comes with our 12-month guarantee.
Walls and rooflines in Little Venice
With historic houses such as Winfield House (about 1 mile north-east) nearby, there’s older building stock in the area around Little Venice as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near London Paddington station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies. If you look after a building such as Ark Paddington Green Primary Academy, its movement joints, gutters and trims need looking after like any other building’s.
Little Venice is about 1 mile west of City of Westminster, in Greater London. Anywhere in W2, our applicators can take on external mastic. 764 places in Greater London are on our list.
Every address in W2, W9 and NW8 is covered for external mastic. External mastic is available to properties on Harrow Road, Alfred Road and Newton Road. Being close to the A5 and A40, Little Venice is easy for our applicators to reach. Other places close to Little Venice include Westbourne Green (1 mile west), Paddington Green (1 mile east), Paddington (1 mile south-east), Maida Vale (1 mile north-west) and Lisson Grove (1 mile north-east). Further out, we also cover London (4 miles east), St Pancras (3 miles east), Shoreditch (5 miles east), Walthamstow (8 miles north-east), Hoxton (4 miles east) and Whitechapel (5 miles east).
Around Little Venice
Typical jobs here are in homes near International Community School, The Bridge House and Westminster Academy, among other places. Other local landmarks include Kensington Gardens (1 mile south) and Royal Society of Medicine Library (1.6 miles east). Little Venice has its own railway station: London Paddington station. Other landmarks nearby include Maida Vale Hospital for Nervous Diseases (under half a mile north) and Kensington Arcade (1.5 miles south). For a walk, there’s Greville Place nature reserve and Campden Hill.
What the job involves on each surface
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.
Cladding and façade panels
Cladding and façade panels are usually separated by sealed joints. Each joint gets a sealant that suits the panel and its movement.
Nearby places to Little Venice
Other services in Little Venice
What we do, step by step
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a handful of joints, longer for a whole elevation. In Little Venice, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Tell us if parking is tricky
- Keep pets and children clear of the area while we work
- Move anything stored near the joints
Get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To get started, call 0345 464 0079 or drop us an email.
Related advice
Why deal with it now?
Sealing over the top of old mastic doesn’t hold for long. New sealant does not bond well to old, weathered sealant, so we always take the old sealant out. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler.
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
Why choose Mr Mastic in Little Venice
- White, clear, grey or coloured to suit, where the product allows
- Old sealant always removed completely
- Anti-fungal sanitary silicone in wet areas
- Colour picked to suit the job
Read what affects the cost and customer reviews.
Signs you need external mastic in Little Venice
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint.
Signs it’s time to call us include:
- Damp patches traced to an open external joint
- Sealant that has lost its bond to the brick or render
- Movement joints filled with mortar instead of sealant
- Hard, crazed mastic that has stopped moving
Little Venice is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
What to look for in a quote
- Are they insured?
- Who does the work, and how experienced they are
- The length of the guarantee
- How the joint is cleaned and prepared
Work for landlords, hotels and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.