Expansion joint sealing in Hendon
Work needed on a movement joint in Hendon? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Brittle, chalky sealant on external joints
- Water dripping through deck or ramp joints
- Arrises breaking up along floor joints
Expansion joint sealing across Hendon
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Questions we are asked in Hendon
Can you work in a London building with booked loading and goods-lift slots?
Yes. Inductions, permits and timed loading are routine for us in London. Share the building’s contractor rules and we will work to them. We allow for the ULEZ, which covers every borough
Can you work on a hospital site such as BMI Hendon Hospital?
Yes. We work in healthcare settings as well as offices and schools. We follow the site’s permits, sign-in and infection-control procedures in every area.
How do I request a quote?
The quote form is the simplest route, though you can also phone 01277 525 020 or email the details over. Include photographs or drawings if you have them.
Can you quote from photos?
It depends on the job. Simple work can often be priced from photos, while larger or less clear jobs get a site visit first.
Can you handle several sites?
Yes. We take on portfolio and planned maintenance work, planned site by site to suit how each building is used.
Are you CHAS accredited?
Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.
Do you cover Hendon?
Yes. We cover Hendon. To discuss a job, ring 01277 525 020 or email the details over.
How we handle expansion joint sealing in Hendon
The seal is what lets a movement joint do its job. When the sealant splits or lets go, the gap fills with dirt and water; the joint jams, its edges take the load and the arrises spall. Dealt with early, it stays a sealant job rather than a concrete or masonry repair. If you’re dealing with spalled or broken joint edges in floors and decks and weathered movement joint sealant that no longer flexes, we can put it right, on cladding panel joints, car park decks and ramps and blockwork control joints alike. A specialist sealant contractor works differently from a general builder: in Hendon, that means joint design, primers and backing rod as standard.
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.
What our 12-month guarantee covers is the way we did the job: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Place
- Hendon (NW4, NW9, NW2, NW11)
- Region
- Greater London
- Guarantee
- 12 months on every job
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
From enquiry to sign-off
Site rules come first: sign-in, induction and whatever permit system the building uses. With the paperwork done, the joints are worked through in the order agreed with your site contact. In Hendon, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.
- We look at the joints, their width and how they’ve failed.
- A fixed quote follows, naming the sealant and its movement class.
- The failed seal is removed and both faces are cleaned until sound and dry, flagging any broken edges that need repair before sealing.
- Backing rod goes in at the right depth, or bond-breaker tape where the joint is shallow.
- After any primer the maker requires, the bead is applied and tooled so it grips two sides only.
- Each joint is inspected and handed over with our 12-month guarantee.
Preparing the site
- Warn occupants and staff about the work
- Tell us which areas need to stay in use
- Flag any permit to work we will need
Quotes
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photos and a few notes.
Advice
More services for Hendon
When something else is needed
Not every problem is a sealant problem, and we are upfront when that’s the case. These need a different solution:
- Mechanical expansion joint covers, cover plates or proprietary joint systems (a specialist supplier’s job)
- Movement on a scale no sealant is meant to absorb
- Broken or spalled joint edges, which need repairing before any sealant goes in
If in doubt, call 01277 525 020 or email a schedule or drawings and we will say what we think.
Joints and surfaces we work on
- Precast concrete panel joints
- Brickwork movement joints
- Podiums and floor movement joints
- Blockwork control joints
- Cladding panel joints
- Car park decks and ramps
Looking after the joints
After handover, these steps help:
- Keep traffic off new joints until the cure time is up
- Treat a small split as a warning, not a cosmetic issue
- Keep racking legs and heavy point loads off floor joints
- Inspect movement joints alongside other routine building checks
Snow ploughs and scrapers catch on joint lines. Lifting the blade at each joint avoids tearing the bead and a look at the joints after winter catches any damage.
Floor joints with failed fillers break up quickly under wheels. Broken arrises jolt trucks, loads and drivers and the broken length grows with every pass. Keeping the filler or sealant sound protects the floor.
General trades versus a specialist
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.
Floors, slabs and movement joints in Hendon
Basement car parks and service yards in London tend to be in use all working day, so joints are sealed in sections with each area handed back once cured. Less than 3 miles from Hendon there are at least three named estates and business parks. Sites like these are full of saw-cut floor joints, yard slabs and car park joints.
Hospitals like BMI Hendon Hospital, 0.6 miles north of Hendon, have multi-storey or surface car parks whose joints carry vehicles round the clock. Places like Brent Cross Shopping Park (to the south of Hendon) put trolleys over floor joints inside and cars over slab joints outside.
Hendon is about 3 miles north-west of Hampstead, in Greater London. Hendon sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our Greater London coverage takes in 764 places. For work in that direction, see our London page.
Business premises anywhere in NW4, NW9, NW2 and NW11 are within our area. We cover commercial and managed buildings on Church Road, Station Road and Sydney Grove. With the A5 and A41 nearby, Hendon is easy to get to with materials and equipment. If your building is just outside Hendon, we cover The Burroughs (1 mile north-west), Brent Cross (1 mile south), Staples Corner (1 mile south), West Hendon (1 mile west) and The Hyde (1 mile west). A short drive away, we cover London (8 miles south-east), City of Westminster (6 miles south-east), Marylebone (6 miles south-east), Kensington (6 miles south), St Pancras (6 miles south-east) and Shoreditch (7 miles south-east).
Landmarks near Hendon
Recent enquiries here include premises near Hasmonean Primary School, The White Bear pub and Kisharon College. For rail, the closest station is Hendon station, about 0.7 miles south-west. A little further out are Brent Cross Shopping Centre (0.5 miles south) and St Andrew's Hospital (1.6 miles south). For a walk, there’s Darland's Lake and Parliament Hill.
What affects the price in Hendon
These are the things that shape the price:
- Location, for remote and island sites
- Removal of failed or old sealant
- Backing rod, priming and other preparation
- Phasing around occupants
Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you will have a fixed figure to work with.
Before you send an enquiry
However big the job, these details speed things up:
- Rough lengths or quantities, or drawings if you have them
- Asbestos survey details if the building is older
- Clear photos of the problem areas
- How the joints are reached, and at what height
To get a fixed quote, call 01277 525 020 or send details through our quote form with the site address and an outline of the work. You can also send details through our quote form.
Signs you need expansion joint sealing in Hendon
Most movement joint failures come down to the joint stretching further than the sealant can take. A joint that’s too narrow for the movement, or a product with the wrong movement class, will split through the middle. Resealing like for like often fails the same way.
Common reasons buildings call us in:
- Leaks through car park deck joints onto the level below
- Arrises breaking up along floor joints
- Brittle, chalky sealant on external joints
- New sealant over old, now failing
At places like Silk Bridge Retail Park, 1 mile to the west of Hendon, joints are sealed a section at a time so operations carry on.
Questions to ask before you book
- Whether primer will be used where the manufacturer specifies it
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Are they CHAS accredited or on Constructionline?
- The named product and why it was chosen