Facade Sealing in Kensal Rise
Facade joint and window perimeter sealing on commercial buildings in Kensal Rise. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Facade joints cracked through the middle
- Draughts around frames and panels
- Old perimeter mastic that has dried out
Facade sealing for businesses in Kensal Rise
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Facade sealing in Kensal Rise
A good facade joint depends on design as much as product. Joint width needs to match how far the joint moves and how far the sealant can stretch, while rod fixes the depth and stops the bead sticking to the rear with the ratio the sealant maker recommends, often around 2:1. If you are dealing with new sealant peeling off old mastic and gaps between rainscreen or cladding panels, we can put it right, on perimeter joints where frames meet the structure, cladding panel joints and shopfront frames alike. Searching for sealant specialists in Kensal Rise? We have been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.
A great deal of London construction is refurbishment of occupied or part-occupied buildings, alongside new blocks. Replacement windows, recladding and fit-outs leave perimeter and facade joints to seal, often next to people still using the building.
We sign every job off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.
- Where
- Kensal Rise (W10, NW10, NW6)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Quote
- Quoted before any work starts
- Call
- 01277 525 020
- Updated
- 3 November 2026
Maintenance after handover
After handover, these steps help:
- Report water ingress at frames as soon as it shows
- Never let anyone seal over old sealant
- Walk the elevations once or twice a year
- Avoid harsh cleaners on facade sealant
Keep gutters, sills and drainage paths clear. Good drainage keeps water moving off the facade.
Check older buildings for asbestos before disturbing old mastic. Some older mastics contain it, and if it’s suspected, we stop until it has been tested.
Also near Kensal Rise
Other services in Kensal Rise
How the job changes by surface
Coping and flashing joints
Coping and flashing joints are included where sealant is the specified fix. These joints take full exposure to weather, so preparation and product choice matter.
Cladding panel joints
On sealed panel systems, every joint keeps water out. Failed runs are cut out and rebuilt end to end.
Our process
Before we leave any area, the masking comes off, the area is cleaned and every joint is checked. Where the sealant needs time to cure before use, we tell you and sign the area. Most London premises stay occupied while we’re on site, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.
- Access, site rules and timing are settled with the client up front.
- We only seal when joints are dry and within the product’s temperature range.
- We remove the old bead and check the edges are sound.
- Joints are cleaned, primed if required and fitted with backing rod.
- Sealant is gunned in and tooled hard onto both faces.
- Once signed off, the work carries our 12-month guarantee.
What we need from you
- Share your working hours and any access restrictions
- Tell staff and tenants when we’ll be in
- For older buildings, check the asbestos register before work
Quotes
Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.
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Common questions from Kensal Rise clients
Can you cope with the access rules in a London building?
Yes, most London buildings have access rules of some kind, and we plan around them. Share the building’s contractor rules and we will work to them. The ULEZ covers the whole of Greater London, which we allow for
Is hospital work, at somewhere like St Charles' Hospital, something you do?
Yes, healthcare and care buildings are part of our work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
Do you provide access for facade work?
We agree access with the client at the start. Tell us about access: existing scaffold, what you are arranging and any site restrictions.
Are you CHAS accredited?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.
Do your applicators hold CSCS cards?
Yes. Should the site need card details in advance, let us know and we’ll send them with the quote.
How do we ask for a quote?
You can use the quote form on this site; alternatively, ring 01277 525 020 or email the details over. Photos, drawings or a joint schedule help us quote quickly.
Does the weather affect the work?
For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.
When something else is needed
Sealant solves a lot, but not everything, and we are upfront when that’s the case. These need a different solution:
- Water getting in through cracked render or porous masonry
- Cracked or spalling substrates that need repair before sealing
- Providing access systems for the work
If in doubt, call the office on 01277 525 020 or send details through our quote form and we will say what we think.
Joints and surfaces we work on
- Coping and flashing joints
- Stone and brick facade joints
- Cladding panel joints
- Perimeter joints where frames meet the structure
- Shopfront frames
- Window and door perimeters
Contractors’ notes for Kensal Rise
Site traffic in Kensal Rise falls within London’s ULEZ, like everywhere else in Greater London. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for. A 2-mile radius around Kensal Rise takes in plenty of hotels. Hotel extensions and refits normally have to fit around bookings, so mastic dates are tight.
Projects at colleges like Morley College London, 0.8 miles south-east of Kensal Rise, tend to run to term dates, so the mastic is planned tightly. New wings at hospitals like St Charles' Hospital, 0.7 miles to the south of Kensal Rise, bring long runs of window and panel joints to seal.
Kensal Rise is about 1 mile south-west of Kilburn, in Greater London. Any commercial site in Kensal Rise is covered, whether it’s a single job or part of a planned programme. Kensal Rise is one of 764 places in Greater London on our list. London is covered too, some 6 miles away.
We take on facade joints across the W10, NW10 and NW6 postcode area, whatever the building. Among the streets we cover are Hazel Road, Hiley Road and Kempe Road, and sites on any of them can send details for a fixed quote. We also cover 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) for facade joints. Further afield, our area takes in 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).
Near you in Kensal Rise
We work on buildings around Paradise by Way of Kensal Green pub, Queens Park Community School and Brondesbury College and the streets around them. Kensal Rise has its own railway station: Kensal Rise station. Other landmarks nearby include Brent Museum and Archives (1.1 miles north-west) and Westfield London (1.8 miles south). Green spaces nearby include The Long Water and Campden Hill.
Leave it or put it right?
The longer a failed joint is left, the more the substrate suffers: edges get wet, render and timber deteriorate and frames can move. Early action keeps it simple. Failed sealant in a building in Kensal Rise can quickly affect neighbours, tenants or the floor below. Dealing with it early is simpler for everyone.
The specified product makes a difference, as does the preparation each joint needs. Access, phasing and site rules also count.
What you get with us
- Fully insured
- Over 20 years of commercial sealing
- One phone line for London, the South East and Scotland
- Colours chosen to suit frames, cladding or finishes where possible
Take a look at what affects the cost or how we’re accredited.
When to call us in Kensal Rise
A frequent fault is a bead stuck to the joint’s rear face as well as its sides. With no backing, the sealant is restrained.
Look out for the following:
- Perimeter sealant that has split or peeled away
- Gaps between rainscreen or cladding panels
- Air leaks through failed facade joints
- Damp patches beside frames after rain
For contractors on a campus like Imperial College London, which lies south of Kensal Rise, facade and perimeter sealing has to fit around students and term dates.
Questions to ask before you book
- Their public liability cover
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Who will actually carry out the work
- The terms of the workmanship guarantee