Expansion Joint Sealing in Northfields
Commercial sealant work in Northfields for contractors, FMs and building owners: expansion and movement joint sealing in walls, decks and floors, quoted at a fixed price.
- Rain penetration at brick or block movement joints
- Water dripping through deck or ramp joints
- Sealant peeling off one face of the joint
Expansion joint sealing across Northfields
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Aftercare for building managers
Your facilities or cleaning team can help the joints last. Pass these on to them:
- Keep racking legs and heavy point loads off floor joints
- Sweep decks, ramps and floors so grit doesn’t collect in the joints
- Record the sealant used and the date in the O&M file
- Keep scrapers and ploughs from dragging across joint sealant
Grit is the slow enemy of a joint seal. Stones pressed into the bead by wheels or feet can puncture it and decks and floors suffer most. A routine sweep is the simplest protection.
When one joint fails, others of the same age are rarely far behind. Inspecting the whole run is worth the effort, so the work can be planned rather than rushed. We’ll tell you which movement joints need doing now and which can wait.
Expansion joint sealing for commercial buildings in Northfields
Few joints take as much punishment as those in a car park. Tyres load the edges, and de-icing salts and water work into any gap, so failed seals soon lead to leaks onto the level below and broken edges. A sealant suited to traffic and the expected movement goes in and the work can be phased so parts of the car park stay open. If you have expansion joints split through the centre of the bead and new sealant over old, now failing, we can put it right, whatever the surface. Facilities teams, main contractors and managing agents in Northfields tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Around Northfields, as across London, joints are under constant load, from basement car parks and loading bays to podium decks and busy mall floors. When a joint fails, grit and water get in and the arrises start to break up.
We sign every job 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.
- Where
- Northfields (W5, W13, TW8)
- Wider area
- Greater London
- Guarantee
- 12 months on our workmanship
- Quotes
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Towns and villages near Northfields
More services for Northfields
Owners, agents and contractors
Building owners and managing agents use us on everything from one building to a spread of sites. Several sites can go on one quote, so there’s one set of paperwork to deal with.
Hospitality, education, healthcare, office and retail clients come to us directly as well. The work is planned around how the building runs, so the building keeps working while we do.
Expansion joint sealing in Northfields: the local picture
Less than 3 miles from Northfields there are at least three named estates and business parks. Floors, loading bays and yards on sites like these are where floor and movement joints work hardest. Basement car parks and service yards in London tend to be in use all working day, so we seal in sections and hand areas back as each cures.
Across sites such as West Cross Industrial Park (1 mile south-west of Northfields), floor and movement joints can be sealed in phases so units keep working. If you manage units on an estate such as Phoenix Trading Estate (0.7 miles south-east of Northfields), the floor joints under forklifts and pallet trucks and the slab joints in the yard are the ones to watch. For estates staff at a university like University of West London (Brentford Campus), 0.7 miles south of Northfields, building and paving joints are part of the planned maintenance list.
Northfields is about 1 mile south of Ealing, in Greater London. Commercial clients in Northfields can call on us for movement joints. Northfields is one of 764 places we cover in Greater London. For work in that direction, see our London page.
Commercial sites across W5, W13 and TW8 are covered. We cover commercial and managed buildings on Burns Road, South Road and Elers Road. With the A3002 nearby, Northfields is straightforward for us to reach. We also cover Brentford (1 mile south-east), Gillette Corner (1 mile south-west), Brentford End (1 mile south), Osterley (2 miles south-west) and Spring Grove (2 miles south-west) for movement joints. Further afield, our area takes in London (9 miles east), City of Westminster (7 miles east), Marylebone (7 miles east), Kensington (5 miles east), St Pancras (9 miles east) and Shoreditch (10 miles east).
Local landmarks in Northfields
Locally, jobs take us to sites close to Ealing Fields High School, Great Ealing School and Ealing Park Tavern, among other places. Also close by are Library for Iranian Studies (1.8 miles east) and Lammas Park (under half a mile north). The closest station to Northfields is Brentford station, about 0.8 miles south of the centre. A little further out are Gunnersbury Park House - Large Mansion (1.2 miles east) and Treaty Centre (3 miles south-west). Open spaces near Northfields include Middle Lake and Long Wood.
Why deal with it now?
Doing joint resealing alongside other planned works can save on access. But joints already letting water in shouldn’t wait for a programme. Urgent joints now, the rest later, is often the sensible plan. In a London building, a failed joint rarely affects only one party. Putting it right early is less disruptive than dealing with the consequences.
The product called for affects the cost, and so does the preparation, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.
Why appoint us
- A range of standard colours, depending on the product
- A Constructionline member, so easy to vet
- One contact handling all your sites
- Sealing commercial buildings since 2005
From enquiry to sign-off
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and each bead is tooled to a neat concave finish. All of Greater London is in the ULEZ, and kerbside space in Northfields can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.
- First the joints are inspected, widths measured and the type of failure noted.
- You receive a fixed quote stating the product and the movement it is rated for.
- Where areas have to stay open, we agree a phased sequence before starting.
- The failed seal is cut out and both joint faces cleaned back to sound material.
- Depth is controlled with backing, the faces are primed where the maker calls for it, then the bead is laid and tooled.
- We check each joint with you, confirm the cure time and sign off under our 12-month guarantee.
Preparing the site
- Send your site hours and access windows
- Share the asbestos register for older buildings
- Explain the parking and delivery arrangements
Ask for a quote
Need a figure for a tender or a budget? Send the scope and any drawings, and we will return a fixed quote that you can work with. If you have questions first, phone 01277 525 020 or send details through our quote form.
Advice
What we can’t put right
Being straight saves everyone time. New sealant won’t cure:
- Joints too narrow for the movement, which need redesigning by the engineer
- Waterproofing layers buried beneath the sealant
- Cracking or settlement that calls for an engineer’s assessment
If in doubt, call 01277 525 020 or email drawings and photos and we will say what we think.
Where we work in Northfields
- Cladding panel joints
- Blockwork control joints
- Precast concrete panel joints
- Car park decks and ramps
- Podiums and floor movement joints
- Brickwork movement joints
Common questions from Northfields clients
Can you cope with the access rules in a London building?
Yes, we plan every London job around the building’s own access rules. Send the building rules and access times with your enquiry. The ULEZ covers the whole of Greater London, which we allow for
Can you work on a hospital site such as Clayponds Hospital?
Yes. Healthcare sites are among the places we work. Each area is agreed with the ward or department and the estates team in advance.
Do you cover Northfields?
Yes. We take on work across Northfields.
Will your applicators have CSCS cards?
Yes. Should the site need card details in advance, tell us and we will confirm them with the quote.
What guarantee do you give on joint sealing?
A 12-month guarantee covers our workmanship. Keeping joints clear of debris helps them last.
What happens if old sealant might contain asbestos?
Some older mastics, especially in pre-2000 buildings, can contain asbestos. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and if asbestos is suspected, work stops until it’s tested. We don’t remove asbestos-containing materials.
Which product is best for expansion joints?
The right product depends on the joint. Facades often take a low-modulus silicone; floors and decks typically need a polyurethane unless the specification names something else.
Doing it in-house
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.