Finchley expansion joint sealing
Expansion and movement joint sealing in walls, decks and floors in Finchley. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Previous reseals laid over old sealant
- Damp inside where a wall movement joint has failed
- Sealant pulling off the joint face
Expansion joint sealing in Finchley
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
How we handle expansion joint sealing in Finchley
Internal floor joints take trolleys, pallet trucks and forklifts. Without a sound filler, joint edges chip and spall under load. We’ll tell you if the edges need repairing before sealing, and phased work keeps areas in use. The enquiries we see most involve expansion joints split through the centre of the bead and leaks through car park deck joints onto the level below, on blockwork control joints, car park decks and ramps and precast concrete panel joints. Whoever orders the work in Finchley, the brief is typically the same: a clear scope, tidy work and joints that don’t fail again.
Areas such as a loading bay or car park deck in Finchley usually have to stay in use. Joints are done in sections, with bays coned off one after another, so the site keeps operating, at times agreed with the building manager.
We stand behind the joints we seal: 12 months, guaranteed. That covers our preparation and application.
- Place
- Finchley (N3, N2, N12, NW11)
- Wider area
- Greater London
- Cover
- 12 months on our workmanship
- Quotes
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
From enquiry to sign-off
Site rules come first: signing in, inductions and any permit to work. Once we’re cleared to begin, we take the joints in the sequence agreed with you. Planning a London job such as one in Finchley starts with access: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Send the building rules and access times with your enquiry.
- The first job is to check each joint: how wide it is, how it moves and why the old seal let go.
- You get a fixed quote with the product and its movement capability stated.
- We strip out the old seal and prepare the faces.
- We control the depth with backing rod or, in shallow joints, bond-breaker tape.
- Primer goes on where the manufacturer specifies it, followed by the sealant, which is then tooled off.
- Finished joints are checked and backed by our 12-month guarantee.
Before we start on site
- Arrange parking or a loading space
- Share your working hours and any access restrictions
- Share the asbestos register for older buildings
Ask for a quote
To get a fixed quote, phone 01277 525 020 or send details through our quote form. You can also send details through our quote form.
Advice
Maintenance after handover
Once the work is signed off, these steps help:
- Sweep decks, ramps and floors so grit doesn’t collect in the joints
- Act on the first tear or lifting edge rather than waiting
- Look over external and deck joints after a hard winter
- Keep traffic off new joints until the cure time is up
On car parks, winter clearance can damage deck joint sealant. Raising blades over joints where possible protects the seal and a look at the joints after winter catches any damage.
On a multi-storey car park, a failed joint normally shows up as a leak onto the deck underneath. That water often carries de-icing salts with it, which is bad news for the concrete and the people parking below. Sealing the joint promptly stops it at source.
Why deal with it now?
Sealing over a failed movement joint is a common shortcut. A bead laid on top of the failed one neither grips nor flexes properly. We cut out the old seal and prepare the faces every time. Failed sealant in a building in Finchley can quickly affect neighbours, tenants or the floor below. Dealing with it early is simpler for everyone.
Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you’ll have a fixed figure to work with.
Why clients in Finchley choose us
- Our applicators hold CSCS cards
- Fully insured, including public liability cover
- Clear, fixed quotes
- Specification-led, product-correct work
Different surfaces, different methods
Car park decks and ramps
Car park joints are some of the hardest-working joints in any building. A trafficable sealant suited to the movement goes in, phased so parts of the car park stay open.
Concrete and precast panel joints
Concrete edges can be weak or carry release agents that stop adhesion. We prepare the faces thoroughly and prime where the maker calls for it and check the edges for soundness as we go.
Work for main contractors and building owners
When you manage a building on behalf of an owner, you need clear quotes and clear reporting. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.
Building owners and managing agents use us on everything from one building to a spread of sites. One quote can cover more than one site, so there’s one set of paperwork to deal with.
Nearby places to Finchley
More services for Finchley
Questions about Finchley
Do you work in London buildings with loading restrictions?
Yes. Inductions, permits and timed loading are routine for us in London. Say when the building is occupied and when it’s quiet, and we’ll plan accordingly. All of Greater London is inside the ULEZ, and our planning allows for it
Is a hospital such as Finchley Memorial Hospital somewhere you can work?
Yes, provided the work is planned with the site’s estates team. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
How do you choose the sealant?
The specification comes first, if there is one. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
What site paperwork can you supply?
Each site asks for different documents, so list what you need, whether RAMS, insurance or CSCS details, and we’ll confirm with the quote.
What guarantee do you give on joint sealing?
A 12-month guarantee covers our workmanship and we hold public liability insurance. Keeping joints clear of debris helps them last.
How long do sealant joints last?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
What happens if it rains on the day?
Outside work depends on conditions because a damp or frozen joint won’t take a proper bond. Internal floor joints are far less affected.
Warehouse floors and decks around Finchley
London car parks, loading bays and podium decks often can’t close for long, so joints are sealed in sections with each area handed back once cured. The 3 miles around Finchley take in at least three named trading estates, business parks or retail parks. That puts plenty of warehouse floors, service yards and car parks close by, all with joints under traffic.
A healthcare site such as Finchley Memorial Hospital (to the north-east of Finchley) depends on car parks, ramps and service yards whose joints take traffic all day. At places like Friern Bridge Retail Park, which lies north-east of Finchley, joints are sealed a section at a time so operations carry on. A campus such as Middlesex University, 2.6 miles to the west of Finchley, has long runs of movement joint in its buildings, decks and paving.
Finchley is about 6 miles north of City of Westminster, in Greater London. Looking for expansion joint sealing in Finchley? We can help, as we do across Greater London. Our Greater London coverage takes in 764 places. There’s a separate page for London, about 8 miles away.
Work on movement joints is covered throughout N3, N2, N12 and NW11. For a building on Station Road, Chaplin Square and Market Place or nearby, we can quote for movement joints. Access to Finchley is via the B1462 among other routes. Close to Finchley, our area also takes in Church End (1 mile west), Woodside Park (1 mile north), North Finchley (1 mile north), Friern Barnet (2 miles north-east) and Oakleigh Park (2 miles north). Further afield, our area takes in London (8 miles south-east), City of Westminster (6 miles south), Marylebone (6 miles south), Kensington (7 miles south), St Pancras (6 miles south-east) and Shoreditch (7 miles south-east).
What’s near Finchley
We work on buildings around The Elephant Inn, Bishop Douglass School and Francis Skaryna Belarusian Library and Museum and the streets around them. You’ll also find Victoria Park (under half a mile north) and Woodhouse College (1 mile north-east). Finchley’s nearest station is New Southgate station, about 1.9 miles north-east of the centre. A little further out are Finchley Memorial Hospital (less than half a mile north-east) and Grand Arcade (1 mile north). Green spaces nearby include Highgate Hill and Lakeside Nature Reserve.
Cost factors for movement joints
Quotes vary with the job. Expect it to depend on:
- Any access equipment needed
- Distance, for remote addresses
- Phasing around occupants
- Whether old sealant has to be cut out first
Access often affects the price as much as the sealing: easy-to-reach joints are quicker than those that need equipment to get to. Mention the access as part of your enquiry.
Before you send an enquiry
The more we know, the firmer the quote. When you get in touch, include:
- Any dates the work must fit around
- The product your specification calls for
- Approximate linear metres or a joint schedule
- 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 phone 01277 525 020 or email the details over to discuss it first.