Greater London · England
Commercial sealant contractors in W11
Our applicators cover all of the W11 postcode district, including Kensington, Notting Hill and Notting Dale. Every joint is properly prepared, with a 12-month guarantee.
Sealant work in W11
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Places in W11
- Kensington
- Notting Hill
- Notting Dale
- Westbourne
- Holland Park
- Westbourne Green
- Bayswater
- Kensal Town
- Shepherd's Bush
- North Kensington
- White City
Services in W11
- Facade and window perimeter sealing
- Construction and new-build mastic
- Expansion and movement joint sealing
- Commercial sealant contractors
- Coloured and colour-matched sealant
- Commercial washroom and wet-area sealing
- Mastic sealing for building owners and managing agents
- Fire-rated sealing and fire stopping
- Industrial and floor joint sealing
- See all services
Let us know the job and your postcode for a fixed quote: call 01277 525 020 or email the details over.
How commercial sealant contractors works in W11
We’ve applied sealant on commercial sites for over 20 years, and the documents buyers ask for are ready: CHAS accredited, Constructionline member, five million pounds of public liability insurance and CSCS-carded applicators. Let us know which site documents you need and they’ll be confirmed with the quote. The enquiries we see most involve water staining near frames, panels or ceilings and hardened, chalky sealant on south-facing or exposed elevations, on floor and threshold joints, movement joints in walls and floors and kitchen worktops and splashbacks.
In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed, then handed back before we move to the next.
- We begin with whatever information you have, whether that’s photographs, a drawing or a list of locations, or we arrange a site visit.
- Next comes a diagnosis and a fixed quote.
- Before anything is cut out, we agree access, timings and sequence.
- Failed sealant is cut out and each joint cleaned back to sound, dry faces.
- Backing and primer go in where needed, then the chosen sealant is applied and tooled.
- We walk the completed areas with you and sign them off under the 12-month guarantee.
How we quote
The specified product makes a difference, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site requirements come into it too.
Why choose Mastic Doctor
- Work carried out by CSCS-carded applicators
- CHAS accredited contractor
- One contact handling all your sites
- Public liability insurance in place
Getting a fixed quote
To get a fixed quote, phone 01277 525 020 or email a schedule or drawings, telling us the site location and the nature of the job. You can also send details through our quote form.
Near you in Kensington
Around Kensington, our work takes us to commercial buildings near Church of St Barnabas, Kensington School and St Barnabas and St Philip's CofE Primary School. You will also find Holland Park (less than half a mile north-west), Holland Park School (under half a mile north), Scarsdale Tavern (less than half a mile south-east) and Abdus Salam Library (1 mile east). Kensington has its own railway station: Kensington Olympia station. Other landmarks nearby include Kensington Arcade (less than half a mile east) and London Museum (0.7 miles north-east). Open spaces near Kensington include WWT London Wetland Centre and The Long Water.
Commercial premises across W11
Across W11, from Kensington, Notting Hill and Notting Dale to the smaller places between, commercial buildings run from high-street shops and offices to hotels, schools and business parks. Because we cover all of it, multi-site occupiers can bring every building under one quote.
All of Greater London is inside the ULEZ, and much of the South East is within easy reach of the capital, and every job in W11 starts with access, parking and site rules.
Kensington: Occupiers with premises at both Berghem Mews Business Village and Stable Way Industrial Estate could have the sealant at each handled under one quote. For premises near Kensington Olympia station, which lies south-west of Kensington, footfall is part of the plan: work is phased so shops and offices keep trading.
Should maintenance staff do it?
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.
For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Different surfaces, different methods
Movement joints in walls and floors
Brickwork, blockwork and floor slabs all have movement joints that need a flexible seal. Failed seals let grit and water in, and the edges start to suffer. The joints are resealed using a sealant matched to the movement and any traffic.
Commercial kitchens and tea points
Kitchen joints along worktops, sinks, splashbacks and wall cladding collect grease and moisture. Proper degreasing comes before any new sealant.
Maintenance after handover
A few simple habits keep the new joints working:
- Keep washroom and kitchen extraction working
- Check joints after other trades have worked nearby
- Keep a record of which joints were resealed and when
- Act on the first lifting edges rather than waiting
Add the resealed joints to your planned maintenance inspections. Regular checks pick up small failures before they become leaks. Should something look amiss, you can ring 01277 525 020 or email us and send a picture.
Tenants and staff spot black or split sealant quickly. Replacing it on a planned cycle keeps complaints down.
What happens if it’s left?
A cheaper quote sometimes means the old bead stays in. New sealant laid on old silicone has nothing to bond to, so it peels. Our prices always include removal of the failed bead and full joint preparation.
What your quote should include
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Whether their applicators hold CSCS cards
- Health and safety accreditation such as CHAS
- What site paperwork they can supply
For managing agents and facilities managers
Building owners and managing agents use us on sealant work across single buildings or whole portfolios around W11. One quote can cover more than one site, which keeps the paperwork simple.
Whether you’re a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.
Your questions answered
Do you work in W11?
Yes. W11 falls within our area, and the simplest way to start is to speak to us on 01277 525 020 or send photos by email.
What about asbestos in old mastic?
It can, on some older buildings. That’s why we ask for the asbestos information first, and stop if a material is suspect until it’s tested.
Are you CHAS accredited?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member.
Do you work to architects’ specifications?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.
How long does a typical visit take?
The duration is planned around your programme and the access we’re given. You will have an expected duration with the quote.
Which sealant will you use?
The specification comes first, if there is one. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
Is your work guaranteed?
The work is guaranteed for 12 months. Should a joint we sealed give trouble during those 12 months, let us know and we’ll look at it.