Mastic contractors in Kenton
Mastic packages for new-build and refurbishment projects across Kenton, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Frame perimeters left unsealed or poorly sealed
- Snag items on joints that need redoing before handover
- Different trades sealing to different standards
Construction mastic for businesses in Kenton
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Construction mastic for commercial buildings in Kenton
A typical mastic package covers more than window perimeters: external door and window perimeters, internal decorators’ caulk where specified, sanitary joints in bathrooms and washrooms, kitchen worktops and splashbacks, and snagging before handover. One contractor for all of it keeps the responsibility in one place, and one applicator team gives a consistent finish. Most enquiries involve window and door perimeters that won’t pass inspection and a long mastic snag list close to completion, on floor and skirting junctions, internal decorators’ caulk and brick and block movement joints. Most enquiries from Kenton start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
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, so tidy, well-planned work matters.
Our workmanship is guaranteed for 12 months. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Where
- Kenton (HA3, HA7, HA1)
- Region
- Greater London
- Cover
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Maintenance after handover
For the best life from the joints:
- Ask for joint and product checks before the package is urgent
- Don’t schedule sealing before decorators and flooring are done
- Keep scrapers and abrasive pads off new beads
- Note which sealant went where at handover
After we have sealed an area, it helps to keep other trades from damaging the joints. Fresh sealant needs its cure time before it’s cleaned, painted near or knocked.
External joints sealed in poor weather are a common cause of early failure. Waiting for a dry joint and the right temperature is better than redoing work.
Owners, agents and contractors
Hotels, schools, healthcare sites, offices and retail units come to us directly as well. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.
Surface by surface
Kitchens and utility areas
Kitchen joints are sealed after fitting and before final clean. The sealant is a kitchen-grade product, food-safe where food contact is possible.
Snagging before handover
Damaged, missed or untidy joints make up most snag lists. Snagging can be included or priced separately, depending on what suits the programme.
Cost factors for mastic packages
There’s no standard rate for sealant work, because every site is different. What we look at:
- Joint width, depth and condition
- Quantities, in metres or numbers
- Induction, permit and paperwork requirements
- Location, for remote and island sites
Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.
What to include in your enquiry
Good information means a firmer quote. Helpful details to send:
- Asbestos survey details if the building is older
- Whether the building will be occupied during the work
- Where the site is, with the postcode
- Photos of the joints, close up and from further back
A handful of photos and a postcode is the fastest way to a quote. Send them through the quote form, or call the office on 01277 525 020 or email the details over to discuss it first.
From enquiry to sign-off
We schedule the visit to fit the site hours and access windows you give us. While we are working, the area stays contained and tidy, and your contact hears from us before we move to the next area. In Kenton, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.
- First we look at the scope on site or from drawings.
- You receive a fixed quote covering scope, products and sequence.
- Site paperwork is confirmed and our CSCS-carded applicators are inducted.
- Sealing follows the programme as areas are released.
- Problems we find, such as oversized gaps, are raised straight away.
- Final snagging is completed and the 12-month guarantee applies.
Before we start on site
- Clear stock, furniture or equipment away from the joints
- Have the specification and drawings to hand
- Send your site hours and access windows
Getting a fixed quote
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, call the office on 01277 525 020 or use the quote form.
Related advice
Your questions answered
Can you work around term dates at a campus such as Westminster University?
Yes. We plan campus work around teaching, exams and residence turnarounds. We are CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Does your area include sites such as East Lane Business Park, near Kenton?
Yes, sites like East Lane Business Park are within our area, along with the rest of Kenton. Send details of the unit and the work through our quote form for a quick quote.
Who decides which product is used?
If the job is specified, we follow the specification. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
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.
Do you cover Kenton?
Yes. Sites across Kenton are covered.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to.
What about RAMS and site documents?
Requirements differ from site to site, so tell us what you need and we will confirm it when we quote.
New build and refits around Kenton
The area within 2 miles of Kenton holds a good number of hotels. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up. Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Kenton. Add booked deliveries and tight storage, and the mastic package needs planning with the site team.
Hotel extensions and refits, at places such as St Nicholas Hotel, 0.6 miles to the south-west of Kenton, normally run between busy periods, so the sealing is squeezed into short windows. For contractors at a college like London College of Management Studies (less than half a mile west of Kenton), perimeters and internal sealant are timed for the holidays. Extensions at sites like Northwick Park Hospital, 1 mile south-west of Kenton, typically sit beside working departments, and the mastic follows strict access rules.
Kenton is about 2 miles south of Stanmore, in Greater London. Anywhere in HA3, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Our Greater London coverage takes in 764 places, large and small. Our London page has more on work in that area.
Work on mastic packages is covered throughout HA3, HA7 and HA1. Streets here include Retreat Close, Kenton Road and Woodgrange Avenue. Kenton sits on or close to the A4006, useful when we plan access and materials. We also cover South Kenton (1 mile south), Northwick Park (1 mile south-west), Greenhill (1 mile west), Wealdstone (1 mile north-west) and Harrow on the Hill (2 miles south-west). Further afield, our area takes in London (11 miles south-east), City of Westminster (8 miles south-east), Marylebone (8 miles south-east), Kensington (7 miles south-east), St Pancras (9 miles south-east) and Shoreditch (11 miles south-east).
Around Kenton
We work on buildings around Uxendon Manor Primary School, The New Moon pub and Preston Park. The closest station to Kenton is Kenton station, roughly 0.5 miles south-west of the centre. A little further out are St. Anns (1.3 miles west) and Hilfield Castle (4.9 miles north). For a walk, there’s Masons Field and Northala Fields.
Site staff or a sealant specialist?
Some joints are best left to specialists: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong normally costs more in the end than doing them right.
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.