Greater London · England
External & façade joints in Holland Park, Greater London
Sealing brickwork movement joints, render, cladding and façade joints for Holland Park, backed by a 12-month guarantee. Call for a quick quote.
- Cracked joints where brick meets render or frames
- Rain getting behind render or cladding at a joint
- Hard, crazed mastic that has stopped moving
External mastic in Holland Park
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. If you have joints pointed up with cement by mistake and rain getting behind render or cladding at a joint, we can put it right.
In London terraces and converted houses, gutters and walls are often shared with the house next door, so one failed joint can cause damp for more than one household. For a flat in Holland Park, check the lease for who looks after the outside.
All our work comes with a one-year guarantee, wherever you are in Greater London.
- Location
- Holland Park (W8, W11, W14)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Keeping the joints in good condition
After the cure time, these simple habits help:
- Keep soil, plants and ivy away from the joints
- Get split or bare joints resealed while the damage is small
- Deal with leaking gutters that soak the joints below
- Keep movement joints as flexible joints, not mortar
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
Holland Park questions
Can you do external mastic in Holland Park?
Yes, Holland Park is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear price.
Is parking an issue for external mastic in Holland Park?
Parking in Holland Park, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Can you reach joints on upper floors?
It depends on the building. We work on joints that can be reached safely. Give us some details and we will confirm the access.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover Holland Park, along with the rest of our area.
Do I have to be there?
That depends on where the joints are. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
Can new sealant go over the old?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Do you do commercial work?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
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.
What happens on the day
We bring everything the job needs with us. After a quick look at the joints together, we protect the area and start. It normally takes a few hours for a handful of joints, longer for a whole elevation. For a job in Holland Park, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Let us know about earlier repairs to the joints
- Keep pets and children clear of the area while we work
Get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or drop us an email.
Related advice
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
What sealant work cannot fix
Before you book, it’s worth knowing the limits too:
- Failed render or damaged cladding panels
- Structural movement, which needs a surveyor or engineer
- Adding movement joints to masonry that has none
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
What we seal
- Brickwork movement joints
- Joints between brick and frames
- Render & cladding joints
- Façade panels
- Copings & trims
- Concrete & block
How we quote for external mastic
You’ll get a clear quote before any work starts. It’s based on:
- The amount of work
- Working hours on commercial sites
- Which sealant suits the joint
- The old material and how stubborn it is
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before we start, so you know where you stand.
Helping us quote
Before you ask for a quote, have a think about:
- How we’d reach the joints
- The rough size of the job
- If it’s domestic, commercial or a hotel
- Any previous sealing or DIY work
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
When to call us in Holland Park
The wrong product in a moving joint is a classic cause. A high-modulus or general-purpose sealant can be too rigid for a busy joint, and it tears off the sides.
The most common problems we see are:
- Damp patches traced to an open external joint
- Joints with sealant missing in places
- Leaking joints around cladding and façade panels
- Old sealant gone brittle and cracked
Holland Park is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
What your quote should include
- The length of the guarantee
- What preparation is included
- How hidden problems are handled
- Which colour the sealant will be
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Places near Holland Park
Other services in Holland Park
What external mastic looks like in Holland Park
London terraces and converted houses often share gutters, downpipes and walls, so check who is responsible for the outside before booking. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as Holland Park School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. If you let a flat or house near Kensington Olympia station, outside joints that have cracked can let damp into a rental, so check them between lets.
Holland Park is about 1 mile north of Kensington, in Greater London. Across the W8 area, we cover external mastic for homes and businesses. We cover 764 towns and villages across Greater London, from the larger towns to small villages.
All of W8, W11 and W14 is within our area for external mastic. External mastic is available to properties on Dukes Lane, Milson Road and Elsham Road. Holland Park is on the A402 and A4204, which makes it straightforward to reach. We also cover the places around Holland Park: Kensington (1 mile south), Notting Hill (1 mile north), Shepherd's Bush (1 mile west), Notting Dale (1 mile north) and White City (1 mile north-west). Larger places within reach include London (5 miles east), Marylebone (3 miles east), St Pancras (4 miles north-east), Shoreditch (6 miles east), Walthamstow (10 miles north-east) and Hoxton (6 miles east).
What’s near Holland Park
Locally, jobs take us to homes and businesses close to Kensington Palace Green, Abdus Salam Library and Windsor Castle in Kensington pub. You will also find Kensington School (0.6 miles south-east) and Fox Primary School (within half a mile north-east). The closest station to Holland Park is Kensington Olympia station, about 0.5 miles south-west of the centre. Nearby you’ll also find London Museum (0.7 miles east) and St Mary Abbot's Hospital (0.7 miles south-east). Not far away are Campden Hill and WWT London Wetland Centre.