Greater London · England
External & façade joints in Bayswater, Greater London
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Bayswater and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Panel joints letting water in
- Joints where the bead has come unstuck
- Weathered mastic that no longer stretches
How we handle external mastic in Bayswater
Ground-floor and low-level joints are straightforward to reach. Where joints are higher up, tell us about the building when you get in touch and we’ll confirm what access is needed. We work on copings & trims, concrete & block and render & cladding joints, and common reasons people get in touch are rigid filler in a joint that should flex and joints where the bead has come unstuck.
Newer London blocks are built with movement joints in brick and render, and with cladding joints sealed with mastic. 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.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Where
- Bayswater (W2, W8, W11)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Common problems we fix in Bayswater
Sunlight, wet weather and frost wear exterior sealant down. Over the years it hardens, cracks on the surface and loses its give, so the next time the wall moves, it splits or pulls away.
If you can see any of these, it’s time to have the joints looked at:
- Sealant pulling away from one side of the joint
- Gaps where render, brick and frames meet
- Damp patches traced to an open external joint
- Brick movement joints where the sealant has split
Schools such as Fox Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Comparing quotes
- Whether you can choose the colour
- How the surfaces are prepared before sealing
- What the cure time is
- Who turns up on the day
Why deal with it now?
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, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble for homes in Bayswater.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we will explain what it covers.
Why book with us
- Approved under the ARBOMaster scheme
- White, clear, grey or coloured to suit, where the product allows
- Neat joints and a tidy finish
- Anti-fungal sanitary silicone in wet areas
See what affects the cost and customer reviews.
What sealant work cannot fix
A few problems are outside what sealant work can do:
- Cracked brickwork or render that needs a builder or plasterer
- Rising or penetrating damp from elsewhere in the wall
- 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 you book.
Joints and surfaces we work on
- Brickwork movement joints
- Copings & trims
- Concrete & block
- Joints between brick and frames
- Render & cladding joints
- Façade panels
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Deal with leaking gutters that soak the joints below
- Keep high-pressure jets off the joints
- Ask before painting over external sealant
- Keep soil, plants and ivy away from the joints
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
A joint that has stopped moving pushes the movement elsewhere, usually as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
How the job changes by surface
Copings and trims
Metal and stone copings both move with temperature, so the joints need a sealant that stays flexible in all weathers.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. The movement joint takes that up, so its sealant has to stay flexible.
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
External mastic in Bayswater: local notes
London terraces and converted houses often share gutters, downpipes and walls, so it’s worth agreeing who is responsible before work starts. Historic houses like Kensington Palace (about 0.4 miles south-east) are a reminder that the area around Bayswater 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.
Bayswater is in London, so parking needs planning: let us know about parking bays, permits or a driveway. For landlords with property near London Paddington station, outside joints that have cracked can let damp into a rental, so check them between lets.
Bayswater is about 1 mile north-east of Kensington, in Greater London. Whether you are in the middle of Bayswater or further out, external mastic is available for homes and businesses alike. Bayswater is one of 764 places in Greater London where we work.
We cover every part of the W2, W8 and W11 postcode area for external mastic and the streets around it. If you need external mastic at a property on Dukes Lane, Salem Road and Aubrey Road or a nearby road, we can help. Main roads around Bayswater include the A4204 and A4206, so getting to you is simple. Nearby, we also carry out external mastic in Westbourne (1 mile north), Westbourne Green (1 mile north), Little Venice (1 mile north-east), Paddington (1 mile north-east) and Paddington Green (1 mile north-east). We also work in nearby towns such as London (4 miles east), St Pancras (3 miles east), Shoreditch (5 miles east), Walthamstow (9 miles north-east), Hoxton (5 miles east) and Whitechapel (5 miles east).
Around Bayswater
Typical jobs here are in homes near Kensington Palace Green, Abdus Salam Library and Kensington School and the streets around them. Nearby too are Lansdowne College (less than half a mile north-east) and The Churchill Arms (less than half a mile south). Bayswater’s nearest station is London Paddington station, roughly 0.9 miles north-east of the centre. Well-known places in the area include St Mary Abbot's Hospital (0.8 miles south) and Montfichet's Tower (3.9 miles east). For a walk, there’s Greville Place nature reserve and The Long Water.
FAQs for Bayswater
Do you work for landlords with property near London Paddington station?
Yes, we work for landlords and letting agents. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.
Is Bayswater in your area for external mastic?
Yes. We work across London and the South East, and Bayswater is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear price.
How long does external mastic take?
A typical job takes a few hours to a few days, depending on the length of joint and the access. Your quote will say how long we expect yours to take.
What do you put in the joint?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
Where is Mr Mastic based?
We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Is there a guarantee?
Yes. All our work carries our one-year guarantee.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages.
What is backing rod for?
We fit closed-cell backing rod wherever the joint depth needs controlling. It sets the sealant depth and prevents three-sided bonding, so the joint can move.
The process
When we arrive, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before we start. The work normally takes a few hours to a few days, depending on the length of joint and the access. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Bayswater. A visitor permit or a nearby bay makes the visit run more smoothly.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Mention any sign-in or site rules at work premises
- Keep pets and children clear of the area while we work
Ask for a quote
We do not publish a price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, phone 0345 464 0079 or email us.