Northolt expansion joint sealing
Expansion and movement joint sealing in walls, decks and floors in Northolt and across Greater London. CHAS accredited and fully insured, with a 12-month guarantee.
- Movement joints with split or torn sealant
- Hardened, cracked sealant on exposed facades
- Chipped joint edges on forklift routes
Expansion joint sealing near Northolt
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Our process
The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. For a job in Northolt, access comes first. Send the building rules and access times with your enquiry.
- First, the joints are inspected for width, movement and the type of failure.
- A fixed quote follows, naming the sealant and its movement class.
- 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.
- Each joint is inspected and handed over with our 12-month guarantee.
Preparing the site
- Send any specification or drawings in advance
- Tell staff and tenants when we will be in
- Share your working hours and any access restrictions
Quotes
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to call 01277 525 020 or email a schedule or drawings with what you know.
Advice
About our expansion joint sealing in Northolt
A movement joint only works while its seal does. When the sealant splits or lets go, the gap fills with dirt and water, the joint can’t close properly and its edges begin to crumble. Resealing at the first signs of failure is far cheaper than repairing the material either side. We work on blockwork control joints, brickwork movement joints and podiums and floor movement joints, and the failures we’re asked to look at most are joints packed with grit and debris and chipped joint edges on forklift routes. Facilities teams, main contractors and managing agents in Northolt tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Distribution and trade units on London’s edges, and deck car parks across the city, hold most of its floor and slab joints. In Northolt, as everywhere in London, access, loading and the ULEZ all come into the plan.
Work we carry out comes with a 12-month guarantee. If an installation problem shows up, ring 01277 525 020 or email the details over and we will arrange a return visit.
- Location
- Northolt (UB5, UB6)
- Region
- Greater London
- Guarantee
- A 12-month guarantee
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Also near Northolt
More services for Northolt
Honest limits
We check first that sealant really is the fix. It won’t put right:
- Broken or spalled joint edges, which need repairing before any sealant goes in
- Structural movement beyond what the joints were designed for (that needs a structural engineer)
- Changing the joint layout or spacing of a structure
Not sure which it is? You can call the office on 01277 525 020 or email drawings and photos and we’ll tell you honestly before you book.
Surfaces we seal
- Podiums and floor movement joints
- Blockwork control joints
- Car park decks and ramps
- Brickwork movement joints
- Cladding panel joints
- Precast concrete panel joints
Leave it or put it right?
Doing joint resealing alongside other planned works can save on access. Leaking joints need sealing now because damage continues. We can split the scope into urgent and planned. Access in London is hard enough to arrange once, so while access is arranged it pays to renew all failing joints, not just the worst.
What a job costs comes down to how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a fixed quote once you have the details.
Why clients in Northolt choose us
- CHAS accredited contractor
- Constructionline member for supplier checks
- Colours confirmed for the specified product
- CSCS-carded applicators
Read our cost guide and our accreditations.
Common problems we fix in Northolt
Sun, rain and frost age external movement joints. In time the bead chalks, stiffens and cracks, so it can’t follow the movement any more.
What tends to prompt an enquiry:
- Torn sealant in brick or block movement joints
- Water dripping through deck or ramp joints
- Sealant pulling off the joint face
- Debris jammed in movement joints
For a centre such as Victoria Retail park, 0.8 miles to the north-west of Northolt, the service yard and car park joints typically need attention first.
Questions to ask before you book
- Can the work be phased to keep areas open?
- Proof of insurance
- How joint depth will be controlled
- Are they CHAS accredited or on Constructionline?
Where floor joints take the most wear near Northolt
London car parks, loading bays and podium decks often can’t close for long, which is why we work a few bays at a time. The 3 miles around Northolt take in at least three named trading estates, business parks or retail parks. Their warehouses, yards and car parks are exactly where joints take the most punishment.
On industrial estates such as Northolt Industrial Estate, under half a mile to the south-east of Northolt, saw-cut floor joints, loading bay slabs and yard joints take the heaviest traffic. Across sites such as Kelvin Industrial Estate, 0.6 miles south-east of Northolt, floor and movement joints can be sealed in phases so units keep working.
Northolt is about 2 miles south-west of Harrow, in Greater London. Commercial clients in Northolt can call on us for movement joints. 764 places across Greater London fall within our area, Northolt among them. We also cover London, some 12 miles away.
Postcode districts covered here: UB5 and UB6 for movement joints. Streets here include Church Road, Eastcote Lane North and Tenby Gardens. We also cover South Ruislip (1 mile north-west), Greenford (1 mile south-east), South Harrow (1 mile north-east), Yeading (2 miles south-west) and Yiewsley (2 miles south-west) for movement joints. Further afield, our area takes in London (12 miles east), City of Westminster (10 miles east), Marylebone (10 miles east), Kensington (8 miles south-east), St Pancras (11 miles east) and Shoreditch (13 miles east).
Near you in Northolt
Around Northolt, our work takes us to commercial buildings near Northala Fields, The Greenwood Public House and Northolt High School and the streets around them. For rail, the closest station is Northolt Park station, roughly 0.7 miles north-east. Nearby you will also find Heath Robinson Museum (3.1 miles north) and Clementine Churchill Hospital (2 miles north-east). Not far away are Islip Manor Meadows and Northala Fields.
After the work
A few simple habits keep the new joints working:
- Keep traffic off new joints until the cure time is up
- Report split or peeling joint sealant early
- Check joints after long freezing spells
- Note which joints were done, when, and with what
Fresh joint sealant needs its full cure time before it takes traffic or water. How long that takes depends on the product, the temperature and the depth of the joint. Barriers left in place until then protect the finish.
When one joint fails, others of the same age are rarely far behind. Inspecting the whole run is worth the effort so you can prioritise and budget. We will tell you which movement joints need doing now and which can wait.
Common questions from Northolt clients
Can you work on a hospital site such as Cygnet Hospital?
Yes, healthcare and care buildings are part of our work. Each area is agreed with the ward or department and the estates team in advance.
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. The building manager’s rules go straight into our method. All of Greater London is inside the ULEZ, and our planning allows for it
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.
How much does the work cost?
That depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a quote and we will price it properly.
How long will the joint resealing take?
Allow anything from part of a day to a couple of weeks, depending on joint lengths, widths and access. We confirm the timescale with the quote.
Can you fit around our working hours?
Give us your site hours and any access windows in your enquiry, and we’ll schedule the work to suit. Our office runs Monday to Friday, 8am until 5pm.
Are you CHAS accredited and on Constructionline?
Yes. We’re CHAS accredited, we are a Constructionline member and we use CSCS-carded applicators.
Commercial clients in Northolt
Hotels, schools, healthcare sites, offices and retail units book us directly too. The work is planned around how the building runs, so the building keeps working while we do.
Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.