Mastic contractors in North Kensington
Construction mastic in North Kensington, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Existing joints on a refurb that need cutting out and resealing
- New external sealant already peeling away
- Snag items on joints that need redoing before handover
Need construction mastic in North Kensington?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Construction mastic in North Kensington
The specification and the programme set the job, not to habit. Where the specification names a product, we use it. Joint widths, backing, primers and tooling follow the manufacturer’s guidance, so the joints perform as the designer intended. Site teams most often ask us about early adhesion failures on new external joints and sealant knocked or painted over by other trades, on cladding and panel joints, window and door perimeters and internal decorators’ caulk. One point of contact handles commercial sealant work in North Kensington from the first photos to the final walk-round, for single jobs and planned programmes alike.
Building sites in London tend to be tight: limited storage, booked deliveries and access shared with other trades. We fit around the programme, sealing each elevation or floor as other trades hand over.
A 12-month guarantee applies to all our work in Greater London. If an installation problem shows up, speak to us on 01277 525 020 or send photos by email and we’ll arrange a return visit.
- Location
- North Kensington (W10, NW10, W11)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Call
- 01277 525 020
- Page updated
- 3 November 2026
What happens if it’s left?
Getting the mastic contractor involved early pays off. We can check joint widths, flag frames with gaps that won’t seal and confirm products against the specification, which avoids last-minute problems. Leave it late and they turn up on the snag list. In a London building, a failed joint rarely affects only one party: water travels through shared structures, and a small leak becomes a dispute between occupiers. Putting it right early is less disruptive than dealing with the consequences.
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a quote.
Why clients in North Kensington choose us
- Products installed to the manufacturer’s instructions
- A fixed quote before work starts
- Colours confirmed for the specified product
- Old sealant cut out, never sealed over
Places near North Kensington
More services for North Kensington
How the quote is worked out
Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:
- The total length or number of joints
- Backing rod, priming and other preparation
- Working within restricted access windows
- Which sealant the job calls for
Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.
Sending details for a quote
A good diagnosis starts with the right details. Tell us:
- The site address and postcode
- Clear photographs of the problem areas
- Anything awkward about access or site hours
- Whether an asbestos survey exists
Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. The easiest way is to speak to us on 01277 525 020 or send photos by email.
What the job involves on each surface
Fire-rated sealant where specified
Not every penetration suits a sealant. Collars, wraps, batts and boards are specified for other services so we’ll flag where the detail needs something different. Record requirements are agreed with the quote.
Snagging before handover
Snags usually come from damage by following trades, missed joints or poor earlier work. We price snagging as part of the package or as a separate visit.
Your questions answered
Can work at a site such as Imperial College London fit around teaching?
Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Do you cover business parks and estates near North Kensington, such as Latimer Industrial Estate?
Yes, sites like Latimer Industrial Estate are within our area, along with the rest of North Kensington. Send details of the unit and the work through our quote form for a quick quote.
Do you cover North Kensington?
Yes. We cover North Kensington and the rest of Greater London. To discuss a job, speak to us on 01277 525 020 or email drawings and photos.
Do you do internal caulk as well as external mastic?
Inside and out: frame perimeters, movement joints, caulk where called for, sanitary and kitchens in one fixed quote.
When is resealing likely to be due?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Treat them as maintenance items and inspect them regularly.
Does weather matter for sealant work?
Outside, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.
How do I request a quote?
There are four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. The first step only needs photos and a postcode.
Building and refurbishing in North Kensington
Plenty of hotels sit less than 2 miles from North Kensington. When hotels extend or refit, the work is typically squeezed between peak periods, mastic included. Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in North Kensington. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for.
University estates such as Imperial College London (0.6 miles south of North Kensington) tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal. For contractors at a college like St Charles Catholic Sixth Form College (less than half a mile south-east of North Kensington), perimeters and internal sealant are timed for the holidays.
North Kensington is about 2 miles north-west of Kensington, in Greater London. Commercial clients in North Kensington use us for work on mastic packages. 764 places across Greater London fall within our area, North Kensington among them. For work in that direction, see our London page.
We take on mastic packages across the W10, NW10 and W11 postcode area, for business premises of every kind. Buildings on Peach Road, Barlby Road and Eynham Road are within our area for mastic packages. Sites close to North Kensington are covered too, including Kensal Town (1 mile east), Kensal Green (1 mile north-west), Kensal Rise (1 mile north), Notting Dale (1 mile south-east) and White City (1 mile south). Further afield, our area takes in London (6 miles east), City of Westminster (3 miles east), Marylebone (3 miles east), St Pancras (4 miles east), Shoreditch (6 miles east) and Walthamstow (9 miles north-east).
Landmarks near North Kensington
Around North Kensington, our work takes us to commercial buildings near Little Wormwood Scrubs, Maida Vale School and The Eagle pub, among other places. The nearest railway station is Kensal Green station, about 0.5 miles north. Other landmarks nearby include Princess Louise Hospital (under half a mile south-west) and Culture House (1.3 miles south). Not far away are Campden Hill and Greville Place nature reserve.
What we are called out for in North Kensington
Frames installed with uneven gaps make perimeter sealing harder. Sealant has a range of joint widths it can cope with. Better to raise it at the start than seal a joint that’s bound to fail.
It’s worth sending us details if you spot any of the following:
- Frame gaps too wide for sealant alone
- Window and door perimeters that won’t pass inspection
- Old sealant on a refurbishment that needs stripping before new work
- Cracks opening in caulked internal joints
Hospital estates such as St Charles' Hospital (to the south-east of North Kensington) tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan.
Questions to ask before you book
- Their public liability cover
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- What the guarantee covers, and for how long
- Their plan for phasing and protecting the area
Diagnose, treat, sign off
Inspect, seal, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. Most London premises stay occupied while we’re on site, so we agree zones and timings with the building or facilities manager. Phased work keeps the rest of the building in use.
- We start with the drawings, specification and programme.
- Quantities are measured and a fixed price returned.
- We agree with the site team which areas come first.
- Each area is sealed when it’s released.
- Every joint is cleaned, set to depth and sealed with the specified product.
- After snagging, the work is handed over under our 12-month guarantee.
Preparing the site
- Share your working hours and any access restrictions
- Send any specification or drawings in advance
- Tell staff and tenants when we will be in
Getting a fixed quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to ring 01277 525 020 or email drawings and photos with what you know.
Advice
Work for main contractors and building owners
Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, with each stage agreed with your site contact.
If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end.