Commercial Sealant Contractors in Highgate
Commercial sealant contractors in Highgate, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- A top-up bead over failed sealant, now lifting
- Window and door perimeter joints that have cracked open
- Shrunken sealant along kitchen worktops and splashbacks
Commercial sealant contractors for Highgate sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Sealant applicators in Highgate
We’ve applied sealant on commercial sites for over 20 years, and the paperwork side is in order: we are CHAS accredited and a Constructionline member, our applicators hold CSCS cards, and we carry five million pounds of public liability insurance. If your site needs RAMS, an insurance certificate or CSCS details, say so and we’ll confirm with the quote. The enquiries we see most involve earlier reseals applied straight onto the failed bead and weathered facade sealant that no longer flexes, on window and door perimeters, movement joints in walls and floors and external facade joints. Facilities teams, main contractors and managing agents in Highgate tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
In Highgate, as anywhere, the first joints to go are normally the ones that work hardest: south-facing perimeters, entrance thresholds and busy washrooms.
Around Highgate, as across the capital, commercial buildings range from converted period premises to recent office and mixed-use blocks, so one job can involve stone, brick, powder-coated frames and laminate in a single visit. The right product goes on each, in a colour chosen to suit where the joint is seen.
A 12-month guarantee applies to all our work in Greater London. If an installation problem shows up, call 01277 525 020 or send details through our quote form and we will arrange a return visit.
- Where
- Highgate (N6, N19, NW5)
- Region
- Greater London
- Cover
- A 12-month guarantee
- Price
- A fixed quote before we start
- Call
- 01277 525 020
- Page updated
- 3 November 2026
How the job changes by surface
Facade and cladding joints
Facade joints move every day as panels warm and cool. They need a sealant with the right movement capability, laid at the right depth. Access, such as scaffold already up, is agreed before the price is fixed.
Washrooms and toilets
Black sealant in a toilet block is normally beyond cleaning. Replacement is the fix: strip, clean, dry and reseal.
When it isn’t the sealant
Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:
- A failed roof covering or waterproofing membrane
- Faulty windows rather than failed perimeter sealant
- Structural cracks or movement the joints weren’t designed for
If in doubt, call the office on 01277 525 020 or use the quote form and we will say what we think before you book.
Joints and surfaces we work on
- Kitchen worktops and splashbacks
- Washrooms and tea points
- External facade joints
- Window and door perimeters
- Movement joints in walls and floors
- Floor and threshold joints
How the quote is worked out
These are the things that shape the price:
- Any access equipment needed
- Travel to remote or island sites
- The total length or number of joints
- Working within restricted access windows
A quote for sealant joints depends on quantities, condition and access, and any specification that applies. Ask us for a fixed quote.
Before you send an enquiry
For an accurate fixed quote, we need a clear picture of the site. Useful things to include:
- What the building is and how it’s used
- Approximate linear metres or a joint schedule
- Anything awkward about access or site hours
- Photos of the joints, close up and from further back
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, give us a call on 01277 525 020 or email drawings and photos.
Nearby places to Highgate
What else we do in Highgate
Keeping the joints sound
Every sealant joint needs some looking after, and how long they last depends on how they’re treated. We suggest:
- Respect the cure time before reopening an area
- Check joints after other trades have worked nearby
- Brief cleaning contractors to avoid scourers and blades on sealant
- Check the asbestos register before anyone disturbs old sealant in an older building
Put sealant on the planned maintenance checklist. Regular checks pick up small failures before they become leaks. Should something look amiss, you can ring 01277 525 020 or email drawings and photos and send a picture.
Sealant installed at the same time normally fails in sequence. A few splits this year normally mean more next year. We’ll tell you which sealant joints need doing first and which can wait.
Questions about Highgate
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. Send the building rules and access times with your enquiry. All of Greater London is inside the ULEZ, and our planning allows for it
Does a hotel in Highgate need to shut while its sealant is renewed?
Rarely, if ever. We take a few rooms out at a time. We agree the order of rooms and the timings with you before we start.
Can areas stay open during the work?
That comes down to planning: areas are phased, access windows agreed and enough washrooms or entrances left in use. Tell us what has to stay open and we will plan the job around it.
Do you work in Highgate?
Yes. Sites across Highgate are covered.
Are you CHAS accredited?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.
Does commercial sealant work come with a guarantee?
Our workmanship on each job is backed by a 12-month guarantee. We’re fully insured for public liability as well.
Can you supply RAMS and insurance details?
Send your site requirements with the enquiry, and we will confirm the RAMS, insurance and CSCS details with the quote. For older buildings we’ll ask for the asbestos register, plus your site induction rules.
Working on commercial sites near Highgate
Highgate has six care or nursing homes no more than 2 miles away. Care homes need tidy, cleanable joints in kitchens, corridors and communal rooms, often in colours that suit the décor. The 3 miles around Highgate take in at least three named trading estates, business parks or retail parks. Each new occupier on a park like these tends to refit, from reception to staff kitchen.
Industrial estates such as Bush Industrial Estate (0.9 miles south-east of Highgate) have offices, trade counters and welfare areas whose sealant ages like any other building’s. Shopping centres and retail parks such as Arena Shopping Park (to the east of Highgate) see a steady turnover of shop fits, each leaving joints where colour and finish matter. A business with units at Bush Industrial Estate and Regis Road Business Park needn’t use two contractors for its sealant.
Highgate is about 2 miles north-east of Hampstead, in Greater London. Looking for commercial sealant contractors in Highgate? We can help. Across Greater London, 764 places are covered, Highgate among them.
Work on sealant joints is covered throughout N6, N19 and NW5. Buildings on Wood Lane, Grange Road and Talbot Road are within our area. We also cover Upper Holloway (1 mile south-east), Dartmouth Park (1 mile south), Lissenden Gardens (1 mile south), Crouch End (1 mile north-east) and Tufnell Park (1 mile south-east) for sealant joints. A short drive away, we cover London (5 miles south-east), City of Westminster (4 miles south), Marylebone (4 miles south), Kensington (6 miles south-west), St Pancras (3 miles south) and Shoreditch (4 miles south-east).
Around Highgate
Recent enquiries here include premises near The Angel Inn, St Aloysius RC College and Whittington Park, among other places. The nearest railway station is Upper Holloway station, about 0.9 miles south-east. Nearby you will also find Highgate Private Hospital (0.6 miles north-west) and Montfichet's Tower (4.4 miles south-east). The countryside around Highgate includes Darland's Lake and Parkland Walk.
On site: what to expect
We follow your site rules from the start: signing in, inductions and any permit to work. Once we are cleared to begin, the joints are worked through in the order agreed with your site contact. Planning a London job such as one in Highgate starts with access: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Give us the hours we can be on site and we’ll schedule to suit.
- Send details through our quote form, or ask for a site visit.
- The cause is diagnosed and the scope priced as a fixed quote.
- Work is phased around your occupiers where areas need to stay in use.
- Every failed bead is removed rather than covered.
- Each joint gets a suitable sealant, laid to depth and tooled.
- We check the work with you, and the 12-month guarantee starts.
Before we start on site
- Make sure the joints can be reached
- Explain the parking and delivery arrangements
- Confirm the product named in the specification
Get a fixed quote
Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. The easiest way is to give us a call on 01277 525 020 or email us.
Related advice
General trades versus a specialist
Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.