New Barnet expansion joint sealing
Expansion and movement joint sealing in walls, decks and floors throughout New Barnet and nearby, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Arrises breaking up along floor joints
- Joints where the bead has lost adhesion
- Hardened, cracked sealant on exposed facades
Expansion joint sealing for New Barnet sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
For managing agents and facilities managers
Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm with the quote.
If you look after buildings for someone else, 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, plus a 12-month guarantee.
Expansion joint sealing in New Barnet, done properly
Joint design counts for as much as the sealant itself. The joint has to be wide enough for the expected movement and the sealant’s movement capability, and depth is controlled using closed-cell backing rod, or bond-breaker tape in shallow joints. For wider joints, the width-to-depth ratio is often around 2:1, as the manufacturer advises and the bead bonds to the sides, never the back. We work on car park decks and ramps, precast concrete panel joints and brickwork movement joints, and what we are called in for most is sealant peeling off one face of the joint and rain penetration at brick or block movement joints. A single leaking joint is often how a building in New Barnet first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Most London buildings can’t shut a car park, loading bay or warehouse floor for long. Joints are done in sections, with bays coned off one after another, so the site keeps operating.
Every job is signed off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.
- Location
- New Barnet (EN5, EN4, N20)
- Region
- Greater London
- Cover
- 12 months on every job
- Quotes
- A fixed quote before we start
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Questions about New Barnet
Do you take on jobs in New Barnet where loading and access are tightly controlled?
Yes, we plan every London job around the building’s own access rules. Say when the building is occupied and when it’s quiet, and we will plan accordingly.
Will you take on work at estates like Hadley Manor Trading Estate, close to New Barnet?
Yes. We cover New Barnet and the area around it, including industrial estates, business parks and retail parks such as Hadley Manor Trading Estate. A few photographs and the unit address let us price the work.
Can the building stay open while you work?
Yes, with some planning. We agree a sequence with your contact so just one area at a time is disrupted.
Why do our movement joints keep failing?
Most often the movement is too much for the product or the joint width. That’s why we check width, depth and movement class before quoting, rather than replacing like for like.
Can you quote from photographs?
That depends on the size and complexity of the job. Straightforward work can often be priced from photos and measurements, while larger or less clear jobs get a site visit first.
How do you choose the sealant?
The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
What happens if old sealant might contain asbestos?
Some older mastics, especially in pre-2000 buildings, can contain asbestos. We check the asbestos register before cutting out old sealant in an older building, and work stops until any suspect material has been tested. Removing asbestos is a job for asbestos specialists, not us.
Nearby places to New Barnet
More services for New Barnet
Leave it or put it right?
Resealing is normally the answer, not replacing the element. Where the edges are sound, cutting out and resealing is enough. If the edges have broken up, we will tell you they need repairing first. Repeat call-outs disrupt occupied London buildings, so a proper job first time, with the old sealant fully removed, is worth it.
Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.
Why appoint us
- Old sealant cut out, never sealed over
- Colours confirmed for the specified product
- Standard and matched colours in many product ranges
- One contact handling all your sites
What sealant work can’t fix
Being straight saves everyone time. Fresh joints won’t solve:
- Cracking or settlement that calls for an engineer’s assessment
- Failed waterproofing membranes on podiums, roofs or decks (a waterproofing specialist’s job)
- Proprietary pre-formed expansion joint systems
Not sure which it is? You can speak to us on 01277 525 020 or email us and we’ll tell you honestly.
Surfaces we seal
- Brickwork movement joints
- Car park decks and ramps
- Blockwork control joints
- Cladding panel joints
- Precast concrete panel joints
- Podiums and floor movement joints
How the quote is worked out
The price varies from site to site. It mainly depends on:
- Access and working height
- Backing rod, priming and other preparation
- Specialist products, such as fire-rated or hygienic sealants
- Removal of failed or old sealant
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
What to include in your enquiry
Whether it’s one area or a whole building, these details speed things up:
- A wide shot and a close-up of the area
- The asbestos register, for older buildings
- The site address and postcode
- What the building is and how it’s used
To get a fixed quote, call 01277 525 020 or send details through our quote form. You can also send details through our quote form.
Expansion joint sealing around New Barnet: points for this area
Few London car parks or loading bays can be taken out of use for more than a short spell, so we seal in sections and hand areas back as each cures. At least three named trading, business or retail sites lie within about 3 miles of New Barnet. Sites like these are full of saw-cut floor joints, yard slabs and car park joints.
Phasing is what makes joint work possible on busy sites such as North London Business Park (1.5 miles south-east of New Barnet): one bay, aisle or car park row at a time. Estates like Hadley Manor Trading Estate, 1.3 miles north-west of New Barnet, combine warehouse slabs, yards and loading bays, all with joints under wheels. Retail centres such as Spires Shopping Centre (to the north-west of New Barnet) have floors, service yards and car parks with joints under constant traffic.
New Barnet is about 1 mile east of Barnet, in Greater London. Our applicators travel to New Barnet for work on movement joints. We work across 764 places in Greater London, from busy centres to rural villages. For work in that direction, see our London page, about 11 miles away.
Anyone looking for expansion joint sealing in EN5, EN4 and N20 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include York Road, Park Road and Henry Road. Just outside New Barnet, we also work in Barnet (1 mile west), Cockfosters (1 mile north-east), East Barnet (1 mile south-east), Underhill (1 mile west) and Whetstone (1 mile south). Bigger towns within reach include London (11 miles south), City of Westminster (9 miles south), Marylebone (9 miles south), Kensington (10 miles south), St Pancras (8 miles south) and Shoreditch (9 miles south-east).
Local landmarks in New Barnet
Locally, jobs take us to sites close to Trent School Cockfosters, East Barnet School and The Alexandra pub and the streets around them. New Barnet has its own railway station: New Barnet station. Nearby you will also find Spires Shopping Centre (1.6 miles north-west) and Francis Skaryna Belarusian Library and Museum (2 miles south). Open spaces near New Barnet include Greenhill Gardens and Darland's Lake.
Aftercare for building managers
A few simple habits keep the new joints working:
- Include every elevation and deck joint in periodic inspections
- Keep racking legs and heavy point loads off floor joints
- Look over external and deck joints after a hard winter
- Keep stones and debris out of open joint lines
Snow ploughs and scrapers catch on joint lines. Raising blades over joints where possible protects the seal.
A failed deck joint lets water straight through to the level below. That water often carries de-icing salts with it and it can affect the structure over time. Resealing early limits the damage.
On site: what to expect
Inspect, seal, sign off: that’s the shape of every visit. We inspect the joints and confirm what’s in scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. For a job in New Barnet, access comes first. Give us the hours we can be on site and we will schedule to suit.
- Photos, joint lengths and drawings come to us, or we visit.
- We compare each joint’s width with the movement and the sealant’s capability and tell you if the design looks wrong for the movement.
- Every joint is cleared of the failed seal and any grit packed into it.
- Edges are checked, and we tell you if any need repairing before sealing.
- The right sealant goes in at the right depth, bonded to the two sides only.
- Each area is handed back after its cure time, under our 12-month guarantee.
What we need from you
- Send asbestos survey details if the building is pre-2000
- Tell us your opening times and when work is allowed
- Point out parking and an unloading spot
Quotes
A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we will fill any gaps with a visit.