Kensington facade sealing
Facade sealing for Kensington, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- Gaps between rainscreen or cladding panels
- Damp patches beside frames after rain
- Perimeter sealant that has split or peeled away
Facade sealing for businesses in Kensington
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
How we handle facade sealing in Kensington
Installing framed glazing systems isn’t part of our work. What we seal are the joints around them: perimeter joints where frames meet the structure, panel joints and window perimeters, using sealants classified for facade or glazing use. If you have water coming in around window frames and weathered facade joints that have lost their grip, we can help, on window and door perimeters, stone and brick facade joints and coping and flashing joints alike. Looking for mastic applicators who cover Kensington? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.
The ULEZ covers the whole of Greater London, so contractors’ vehicles on a job in Kensington must meet its standards or pay the daily charge. Add booked delivery slots and limited storage, and a London mastic package needs planning before the first bead.
We stand by our work: 12 months, guaranteed. That covers our preparation and application, and if something we did falls short, we return to it.
- Place
- Kensington (W11, W8, W14, SW7)
- Region
- Greater London
- Cover
- A 12-month guarantee
- Quote
- Quoted before any work starts
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
When to bring in a specialist
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Places near Kensington
What else we do in Kensington
Surface by surface
Perimeter joints at frames and structure
The joint around a framed system, where it meets the structure, needs sealant. Our work is that perimeter joint.
Cladding panel joints
Joints between cladding panels open and close with temperature. The sealant has to match the movement and the panel finish.
Signs you need facade sealing in Kensington
Cohesive failure, a split through the middle of the bead, points to an over-stretched joint. The joint may be too narrow, the bead too thin or the sealant the wrong movement class.
Common reasons buildings call us in:
- Hard, chalky sealant that no longer flexes
- Perimeter joints where frames meet the structure
- Failed sealant on precast panel joints
- New sealant peeling off old mastic
Building work at universities like University of Westminster (to the south-west of Kensington) is often timed for the summer, mastic included.
Questions to ask before you book
- How long is the guarantee, and what does it include?
- How the joint faces will be prepared and primed
- How they’ll work around occupants
- How the existing material will be dealt with
Owners, agents and contractors
Hospitality, education, healthcare, office and retail clients come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.
Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.
How a job runs
We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. In Kensington, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.
- First we review photos, drawings or what we saw on a visit, and agree how each joint will be reached.
- Failed sealant is cut out along its full length.
- Joint faces are cleaned to firm, sound material, with primer where the sealant maker specifies it.
- Closed-cell rod fixes the depth, and the sealant grips two sides only.
- A facade-grade sealant rated for the movement goes in, tooled to a concave profile.
- The completed runs are checked with you, then the 12-month guarantee applies.
Before we start on site
- Have the specification and drawings to hand
- Let building users know which areas are affected
- Tell us your opening times and when work is allowed
Ask for a quote
Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. Where a site visit makes more sense, we’ll arrange one.
Read more
Kensington: questions and answers
Can you work in a London building with booked loading and goods-lift slots?
Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Say when the building is occupied and when it’s quiet, and we will plan accordingly. All of Greater London is inside the ULEZ, and our planning allows for it
Can work at a site such as University of Westminster fit around teaching?
Yes. We plan campus work around teaching, exams and residence turnarounds. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
Can weather delay the job?
Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.
Do you install glazing systems?
No. Glazing, windows and glass replacement aren’t part of our work. We seal the joints around them, including perimeters where frames meet the structure.
What’s the quickest route to a quote?
It works in four steps: send details, get a quote, we seal, guaranteed. The first step only needs photos and a postcode.
Is colour matching possible?
In many cases, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We’ll confirm the colours available for the specified product.
Can the building stay open while you work?
Typically, yes. Phased work can be planned so areas stay in use, with each area protected and signed.
Contractors’ notes for Kensington
The area within 2 miles of Kensington holds plenty of hotels. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades. Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Kensington. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for.
On a healthcare site such as Cromwell Hospital (0.6 miles south-east of Kensington), new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully. Units on estates such as Berghem Mews Business Village, 0.7 miles to the west of Kensington, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.
Kensington is about 5 miles west of London, in Greater London. If you’re looking for facade sealing in Kensington, we can help. Kensington is one of 764 places we cover in Greater London for facade joints.
We take on facade joints across the W11, W8, W14 and SW7 postcode area, whatever the building. Streets here include Kensington High Street, Edwardes Square and Somerset Square, and sites on any of them can send details for a fixed quote. Main routes into Kensington include the A402 and B316, which helps when planning parking and deliveries for the job. Just outside Kensington, we also work in Holland Park (1 mile north), Notting Hill (1 mile north), Shepherd's Bush (1 mile west), Notting Dale (1 mile north) and White City (1 mile north-west). Further afield, our area takes in London (5 miles east), Marylebone (3 miles north-east), St Pancras (4 miles north-east), Shoreditch (6 miles east), Walthamstow (10 miles north-east) and Hoxton (6 miles north-east). As one of the bigger centres in Greater London, Kensington has a broad mix of commercial, public and industrial buildings, and we cover them all.
Local landmarks in Kensington
Around Kensington, our work takes us to commercial buildings near Holland Park, Scarsdale Tavern and Holland Park School. Other local landmarks include Kensington School (0.5 miles east) and Abdus Salam Library (1 mile east). There’s a railway station in Kensington itself: Kensington Olympia station. Well-known places in the area include Kensington Arcade (less than half a mile east) and London Museum (0.7 miles north-east). Not far away are WWT London Wetland Centre and The Long Water.
How the quote is worked out
We price every job individually. The main factors are:
- Working within restricted access windows
- How accessible the joints are
- Distance, for remote addresses
- Backing rod, priming and other preparation
We don’t publish prices, since every building and every scope is different. Call for a quote.
What we need to price the job
The more we know, the firmer the quote. Helpful details to send:
- Your programme or deadline
- Specification clauses that apply
- A wide shot and a close-up of the area
- How the joints are reached, and at what height
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.