Greater London · England
Commercial sealant contractors in NW4
Sealant work for contractors, FMs and building owners across NW4, covering Hendon, The Burroughs and Brent Cross, with a fixed quote before we start.
Mastic and sealant across NW4
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Towns and villages in NW4
Sealant work we offer in NW4
- Industrial and floor joint sealing
- Commercial sealant contractors
- Expansion and movement joint sealing
- Commercial washroom and wet-area sealing
- Coloured and colour-matched sealant
- Fire-rated sealing and fire stopping
- Construction and new-build mastic
- Facade and window perimeter sealing
- Mastic sealing for building owners and managing agents
- All services
Let us know the job and your postcode and we’ll come back with a price: ring 01277 525 020 or use the quote form.
About commercial sealant contractors in NW4
Pricing a commercial reseal is a short process. Our quote form takes photos, drawings or a schedule of the areas; you can also call 01277 525 020 or email the details over with the details. Where the photographs don’t tell the full story, we arrange a site visit, followed by a fixed quote rather than an estimate that drifts. Site teams most often ask us about weathered facade sealant that no longer flexes and sanitary sealant that has gone black and patchy, across washrooms and tea points, movement joints in walls and floors and window and door perimeters.
Working in a building that stays open takes some planning. The work area is signed and kept contained, with routes through the building left open and move on in phases so staff and visitors can carry on around us.
- 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.
- Site hours, access windows and the order of areas are agreed before we start.
- The failed bead is removed and the joint faces cleaned until they’re sound and dry.
- We fit backing to the right depth, prime where specified and lay the new bead.
- We walk the completed areas with you and sign them off under the 12-month guarantee.
What you’ll pay
There’s no price list, since every building and every scope is different. For a fixed figure, call for a quote.
Why clients in NW4 choose us
- Over 20 years of commercial sealing
- Colours confirmed for the specified product
- 12-month guarantee on workmanship
- Our applicators hold CSCS cards
Ask for a quote
We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To start the process, speak to us on 01277 525 020 or email the details over.
Local landmarks in Hendon
Around Hendon, our work takes us to commercial buildings near Hasmonean Primary School, Kisharon College and Hendon School and the streets around them. Nearby too are Christ Church Hendon (under half a mile north-east), The White Bear pub (less than half a mile north-west) and Hendon Park (under half a mile south). The closest station to Hendon is Hendon station, about 0.7 miles south-west. Well-known places in the area include Brent Cross Shopping Centre (0.5 miles south) and St Andrew's Hospital (1.6 miles south). Not far away are Darland's Lake and Parliament Hill.
Commercial premises across NW4
The commercial stock in NW4 mixes older town-centre buildings with newer offices and units, in places such as Hendon, Colindale and Grahame Park and beyond. Surfaces decide the sealant, from masonry to powder-coated frames and shop-fit panels.
We work across Greater London and the South East counties, so jobs in NW4 are planned with access, loading and parking in mind.
Hendon: For premises near Hendon station, 0.7 miles south-west of Hendon, footfall is part of the plan: work is phased so shops and offices keep trading. Sites a few miles apart, such as Brent Cross Shopping Park and Silk Bridge Retail Park, can share one programme and one point of contact.
Why it fails
A good share of the joints we inspect were topped up instead of being renewed. New silicone has nothing to key into, so the top layer lifts, holds water and hides what’s going on. Getting back to a clean joint then means removing every layer.
It’s worth sending us details if you spot any of the following:
- Smeared sealant across finishes from a rushed job
- A top-up bead over failed sealant, now lifting
- Weathered facade sealant that no longer flexes
- Expansion joints with the sealant torn out
How the job changes by surface
Washrooms and toilets
Black sealant in a toilet block is normally beyond cleaning. Replacement is the fix: strip, clean, dry and reseal.
Facade and cladding joints
On a facade, a failed joint is often only visible close up. Close-up photographs or a site visit tell us what’s needed, with colours confirmed for the product chosen.
Should maintenance staff do it?
Redoing a failed joint normally 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.
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Keeping the joints sound
To get the most from the new sealant:
- Make sure contractors see the asbestos survey before cutting out old mastic
- Keep abrasive pads and scrapers off resealed joints
- Look at the sealant around anything that has been moved or replaced
- Report cracked or peeling sealant early
Our workmanship on each job is backed by a 12-month guarantee. File the handover note with the building records so it’s easy to find if a joint we sealed gives trouble inside the 12 months.
A failed external joint lets water in every time it rains. Behind a panel or frame, that water can sit unseen for a long time. Catching it at the sealant stage avoids the bigger repair.
What affects the price in NW4
What shapes the price:
- How much there is to seal
- The site’s rules and procedures
- Joint width, depth and condition
- How accessible the joints are
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.
Before you send an enquiry
Whether it’s one area or a whole building, the same details help:
- How the joints are reached, and at what height
- Your programme or deadline
- Clear photos of the problem areas
- The site address and postcode
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, give us a call on 01277 525 020 or email a schedule or drawings.
Your questions answered
How do we get a quote?
Start with whatever information is to hand. Questions or a site visit follow where needed, then a fixed quote.
Is it fine to apply new sealant on top of old?
No, never. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.
How long do sealant joints last?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.
How long before the joints can be used?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.
Will the building have to shut during the work?
Phased work can be planned so areas stay in use. We plan around the site hours and access windows you give us.
Do you hold CHAS accreditation?
Yes. We’re CHAS accredited, we’re a Constructionline member and we use CSCS-carded applicators.
Can one contractor look after sealant on all our buildings?
Yes. Send a list of addresses and what’s needed at each, and fixed prices follow, with a suggested sequence.