Greater London · England
External Mastic in Kensal Rise
Sealing brickwork movement joints, render, cladding and façade joints for Kensal Rise, backed by a one-year guarantee. Call for a quick quote.
- Hard, crazed mastic that has stopped moving
- Movement joints with cracked, split or missing sealant
- Damp patches traced to an open external joint
How we handle external mastic in Kensal Rise
Low-level joints can generally be done from the ground. For joints higher up, give us some details of the building and we will confirm what access is needed. We work on façade panels, joints between brick and frames and copings & trims, and the jobs we see most are damp patches traced to an open external joint and leaking joints around cladding and façade panels.
Outside work in London starts with access: side passages, upper floors and where to park. For a home in Kensal Rise, tell us how high the joints are and how to reach the back of the building.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Kensal Rise (W10, NW10, NW6)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we are fully insured.
How to look after the new joints
Looking after new joints is easy:
- Have failed joints looked at early
- Don’t let climbing plants root in the sealant
- Show decorators and builders where the movement joints are
- Fix overflowing gutters above sealed joints
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick, all bigger jobs than a reseal.
Your questions about external mastic in Kensal Rise
Is parking an issue for external mastic in Kensal Rise?
Parking in Kensal Rise, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
Do you work for landlords with property near Kensal Rise station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Will you leave a mess?
We keep the work tidy. We protect what’s around the joints.
Can you work on commercial sites?
Yes. We have worked for hotels, offices and other businesses, and we are fully insured.
Should I point up the gap in my brickwork?
No. Rigid materials can’t move with the wall, so the joint stops doing its job. If it has already been filled, we can usually cut it out and reseal it.
Do you guarantee your work?
Yes. Every job comes with a one-year guarantee.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
Can you reach joints on upper floors?
Each building is different. Send us photos and a rough idea of the height, and we’ll confirm what access is needed.
Surface by surface
Copings and trims
Copings expand and contract through the day, so the joints need a sealant that stays flexible.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
When to call us in Kensal Rise
If plants are growing out of a joint, the sealant has usually failed or was never there. Dirt and roots then trap moisture in the joint and speed up the damage.
Look out for these signs:
- Failed sealant between panels on a façade
- Hard, crazed mastic that has stopped moving
- Movement joints with cracked, split or missing sealant
- Failed seals between different materials
Schools such as Ark Franklin Primary Academy are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
What to look for in a quote
- How long to leave it before use
- Whether you can choose the colour
- Is VAT in the price?
- What happens if the job turns out different
Places near Kensal Rise
Other services in Kensal Rise
What external mastic looks like in Kensal Rise
With historic houses such as Winfield House (about 2.2 miles east) nearby, there’s older building stock in the area around Kensal Rise 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. In terraces and conversions, gutters and walls are often shared with the neighbours, so check who is responsible for the outside before booking.
For landlords with property near Kensal Rise station, split movement joints are easy to miss on a rental until damp shows inside. As a London address, Kensal Rise can be tricky for parking: let us know about parking bays, permits or a driveway.
Kensal Rise is about 1 mile south-west of Kilburn, in Greater London. From the centre of Kensal Rise to the outskirts, we cover external mastic for every kind of property. Across Greater London, we cover 764 places, Kensal Rise among them. There’s also a page for London, about 6 miles away.
Postcode districts we cover here for external mastic: W10, NW10 and NW6. We cover properties on Hazel Road, Hiley Road and Kempe Road. Neighbouring places we cover for external mastic include Kensal Green (1 mile west), Kilburn (1 mile north-east), Queen's Park (1 mile east), North Kensington (1 mile south) and Kensal Town (1 mile south-east). Larger places within reach include London (6 miles south-east), City of Westminster (3 miles south-east), Marylebone (3 miles east), St Pancras (4 miles east), Shoreditch (6 miles east) and Walthamstow (9 miles north-east).
Local landmarks in Kensal Rise
Locally, jobs take us to homes and businesses close to Paradise by Way of Kensal Green pub, Queens Park Community School and Brondesbury College. There’s a railway station in Kensal Rise itself: Kensal Rise station. Other landmarks nearby include Brent Museum and Archives (1.1 miles north-west) and Westfield London (1.8 miles south). Not far away are The Long Water and Campden Hill.
Why deal with it now?
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner, so it pays to do it properly once. 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. Putting it right early is much less trouble for homes in Kensal Rise.
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or drop us an email.
What you get with us
- An ARBOMaster approved applicator
- 180+ five-star Google reviews
- Sanitary silicone with an anti-fungal additive in wet areas
- A 12-month guarantee on all work
How it works
We keep the work tidy and contained to the area we’re working on, so you can get on with your day. Expect the work to take a few hours for a handful of joints, longer for a whole elevation, and we explain the cure time before we leave. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Kensal Rise. 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.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Tell us about any water getting in
- Mention any sign-in or site rules at work premises
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
Every job is quoted individually. Simply ring 0345 464 0079 or drop us an email and describe the job.
Read more
How we quote for external mastic
Your quote is based on your job. We look at:
- How many areas need sealing
- Working hours on commercial sites
- Any mould that needs treating
- The number and length of the joints
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Asking for a quote
Before you ask for a quote, have a think about:
- Where the job is, and your postcode
- Photos by email, if that is easy
- Roughly how big the job is
- Whether it’s a home or a business
To get a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. You will have a clear quote before work begins.