Greater London · England
Commercial sealant contractors in N20
Commercial sealant, construction mastic and joint sealing across N20, covering Oakleigh Park, East Barnet and Totteridge, with a fixed quote before we start.
Need sealant work in N20?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Places in N20
- Oakleigh Park
- East Barnet
- Totteridge
- Barnet
- Whetstone
- Friern Barnet
- Woodside Park
- New Barnet
- North Finchley
- Brunswick Park
- Underhill
- Mill Hill
What we do in N20
- Mastic sealing for building owners and managing agents
- Construction and new-build mastic
- Fire-rated sealing and fire stopping
- Expansion and movement joint sealing
- Coloured and colour-matched sealant
- Facade and window perimeter sealing
- Industrial and floor joint sealing
- Commercial sealant contractors
- Commercial washroom and wet-area sealing
- All services
Tell us what needs doing and your postcode and we’ll come back with a price: call 01277 525 020 or send photos by email.
Commercial sealant contractors in N20: how it works
Most commercial buildings carry hundreds of metres of sealant that nobody thinks about until it fails, and in an occupied building failure usually announces itself as a stained ceiling or an unhappy tenant. We are commercial sealant applicators for FMs, managing agents, landlords and contractors with sites in N20. Our job is to diagnose the failure, remove the old bead and seal again using a product chosen for the movement and exposure. The enquiries we see most involve sanitary sealant that has gone black and patchy and layers of sealant, all of them failing, across kitchen worktops and splashbacks, movement joints in walls and floors and washrooms and tea points.
At the end of each section, we remove the tape, clean down and inspect every joint with your site contact. If an area should be left alone while the sealant cures, we say how long and put signs out.
- We start with the evidence: photos, drawings or a look on site.
- You get a fixed quote covering removal, preparation and the new sealant.
- We agree the order of work, access windows and site hours with you.
- The failed sealant comes out and the faces are prepared, with primer where required.
- Depth is set with backing, then the sealant is applied, tooled and the area tidied.
- We hand back each area with its cure time and our 12-month guarantee.
What you’ll pay
Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
Why appoint us
- Constructionline member for supplier checks
- Colours confirmed for the specified product
- Old sealant cut out, never sealed over
- One contact handling all your sites
Get a fixed quote
The quickest route to a quote is a few photographs and the site postcode. Upload them with the quote form, or call the office on 01277 525 020 or email drawings and photos to discuss it first.
Near you in Oakleigh Park
In Oakleigh Park, that means premises near Queenswell Infant & Nursery School, Finchley Catholic High School and Three Horseshoes pub. You will also find Church of St John (less than half a mile north-west), Swan Lane Open Space (under half a mile west), Woodhouse College (1 mile south) and Francis Skaryna Belarusian Library and Museum (0.9 miles south-west). Oakleigh Park’s nearest station is Oakleigh Park station, about 0.8 miles north of the centre. A little further out are Finchley Memorial Hospital (1.4 miles south) and Francis Skaryna Belarusian Library and Museum (0.9 miles south-west). Open spaces near Oakleigh Park include Barfield Allotments Nature Park and Highgate Hill.
Where commercial joints are in N20
In N20, much commercial sealant work follows refits in shops, offices and hotels in places such as Barnet, Whetstone and Friern Barnet. Where the joint is on show, a colour that suits the finish is part of the job.
We work across Greater London and the South East counties, and every job in N20 starts with access, parking and site rules.
Oakleigh Park: Access in Oakleigh Park needs thought: the ULEZ covers all of Greater London, and loading and parking are rarely simple. For a shop at a centre such as Grand Arcade, 0.9 miles south of Oakleigh Park, tidy joints at counters and displays matter as much as the fixtures.
Signs you need commercial sealant contractors
The wrong sealant in the wrong place is a common cause of early failure. Painters’ acrylic in a moving joint, vinegar-smelling silicone on metal or natural stone, or a high-modulus product where a low-modulus one was needed. BS 6213 gives guidance on choosing construction sealants, and many specifications refer to it.
Any of the following is a good reason to get the joints checked over:
- Leaks that seem to come through a sealant line
- Earlier reseals applied straight onto the failed bead
- External beads that have gone brittle and cracked
- Frame sealant that has cracked, shrunk or pulled away
Site staff or a sealant specialist?
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.
Redoing a failed joint usually costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.
For managing agents and facilities managers
FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.
Main contractors use us as their sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules.
What happens if it’s left?
Some managers wait for a fit-out before touching the mastic. That’s reasonable for internal joints that are just tired-looking, but external and wet-area joints that already leak shouldn’t wait. We can seal the urgent joints now and leave the rest for the programme.
What your quote should include
- Whether old or failed sealant will be cut out, not overlaid
- Will RAMS and insurance details be available?
- The named product and why it was chosen
- Their approach to joint depth and backing
Cost factors for sealant joints
What shapes the price:
- Specialist products, such as fire-rated or hygienic sealants
- Location, for remote and island sites
- Access and working height
- Working within restricted access windows
The price depends on how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a quote once you have the details.
What to include in your enquiry
A few photos plus some basic facts will normally do. Please tell us:
- A wide shot and a close-up of the area
- Your programme or deadline
- Access details, including height
- The product your specification calls for
Every quote starts with the facts: the joints involved, quantities, access and the product called for. Send what you have, and we will arrange a site visit if anything is unclear.
N20: questions and answers
Is it fine to apply new sealant on top of old?
No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.
Can you work to our specification?
Yes. Send it with your enquiry, and we will price the work to it, flagging anything that needs clarifying.
Do you hold CHAS accreditation?
Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.
How do you keep disruption to occupiers down?
It’s normal for us to work in occupied buildings. Only the area being sealed is closed, and the sequence is agreed in advance, until its cure time has passed.
Do you check for asbestos before removing sealant?
On older buildings, our first request is the asbestos survey. Managing asbestos is the dutyholder’s responsibility.
Which site documents can you send us?
The paperwork is agreed with the quote: most clients ask for RAMS, our insurance certificate and CSCS details. Our applicators are CSCS-carded.
What guarantee do you give on resealing?
The work is guaranteed for 12 months. Should a joint we sealed give trouble during those 12 months, let us know and we will look at it.