East Dulwich expansion joint sealing
Sealant work in East Dulwich for main contractors, managing agents and facilities managers: expansion and movement joint sealing in walls, decks and floors, with a fixed quote first.
- Sealant peeling off one face of the joint
- New sealant over old, now failing
- Debris jammed in movement joints
Expansion joint sealing for East Dulwich sites
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 East Dulwich
Width, depth and product all have to work together. Joint width must suit the movement and the movement class of the sealant, 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. Most enquiries involve water dripping through deck or ramp joints and rain penetration at brick or block movement joints, across brickwork movement joints, precast concrete panel joints and car park decks and ramps. Searching for sealant specialists in East Dulwich? We’ve been sealing commercial buildings since 2005.
Most London buildings can’t shut a car park, loading bay or warehouse floor for long. We work through joints a section at a time, closing small areas in turn.
The 12-month guarantee covers our workmanship: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Location
- East Dulwich (SE5, SE22, SE15)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
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, as damage continues meanwhile. Urgent joints now, the rest later, is often the sensible plan. 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.
We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote.
Why us?
- Fully insured
- 12 months’ guarantee on every job
- Constructionline member for supplier checks
- Failed material removed, not covered up
Take a look at what affects the cost and our accreditations.
Work for main contractors and building owners
Main contractors use us as their sealant subcontractor. We work to your programme, your specification and your site rules, with CSCS-carded applicators on site.
Whether you are a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.
FAQs: East Dulwich
Do you take on work at healthcare sites like Maudsley Hospital?
Yes. We work in healthcare settings as well as offices and schools. 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. Share the building’s contractor rules and we’ll work to them. We allow for the ULEZ, which covers every borough
Which product is best for expansion joints?
It depends on the movement, exposure and traffic. Facades often take a low-modulus silicone; floors and decks usually need a polyurethane, and the specification has the final say.
How soon can the area be used again?
The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, so we’ll confirm the curing time on the day.
Can you quote from photographs?
Many jobs can be quoted from photographs, drawings or a joint schedule. Where they aren’t, we arrange a site visit.
Do you hold CHAS accreditation?
Yes. We are CHAS accredited, we’re a Constructionline member and we use CSCS-carded applicators.
Which sealant will you use?
If the job is specified, we follow the specification. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
How a job runs
On arrival, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, and the work usually takes a short visit for a handful of joints, or several days or more for a car park deck or long runs of facade joints. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. Let us know about any on-site parking or loading arrangements when you send the job details.
- First, the joints are inspected for width, movement and the type of failure.
- Next, we fix a price and confirm the sealant we propose for the movement.
- We strip out the old seal and prepare the faces.
- 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.
Getting the site ready
- Clear stock, furniture or equipment away from the joints
- Share the asbestos register for older buildings
- Let us know about inductions and permits
Quotes
We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, phone 01277 525 020 or email the details over.
Advice
General trades versus a specialist
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
Common problems we fix in East Dulwich
Sun, rain and frost age external movement joints. In time the bead chalks, stiffens and cracks and opens at the next temperature swing.
These are often picked up first by site or facilities staff:
- Brittle, chalky sealant on external joints
- Sealant pulling off the joint face
- Debris jammed in movement joints
- Layers of sealant in a movement joint
Estates like Goose Green Trading Estate (0.5 miles east of East Dulwich) combine warehouse slabs, yards and loading bays, all with joints under wheels.
Comparing quotes
- Whether old or failed sealant will be cut out, not overlaid
- How long is the guarantee, and what does it include?
- Can the work be phased to keep areas open?
- How the joint faces will be prepared and primed
When it isn’t the sealant
Honesty saves time and money. New sealant won’t cure:
- Broken or spalled joint edges, which need repairing before any sealant goes in
- Changing the joint layout or spacing of a structure
- Leaks coming from the membrane rather than the joint seal
If you’re not sure, just ring 01277 525 020 or send photos by email and we will give you a straight answer before you book.
Where we work in East Dulwich
- Cladding panel joints
- Blockwork control joints
- Podiums and floor movement joints
- Car park decks and ramps
- Brickwork movement joints
- Precast concrete panel joints
Slabs, ramps and loading bays in East Dulwich
London car parks, loading bays and podium decks often can’t close for long, so the work is broken into short sections agreed with the building manager. Less than 3 miles from East Dulwich 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.
Retail centres such as Cantium Retail Park, 1.7 miles north-east of East Dulwich, have floors, service yards and car parks with joints under constant traffic. Another example is Bellenden Road Business Centre, 0.7 miles north-east of East Dulwich, where floors and yards would be done in stages around the occupiers.
East Dulwich is about 3 miles south of London, in Greater London. We send applicators to East Dulwich for movement joints, handled exactly as we handle every other area. We work across 764 places in Greater London, from busy centres to rural villages.
Work on movement joints is covered throughout SE5, SE22 and SE15. For a building on Rye Lane, Wren Road and Adys Road or nearby, send details and we’ll quote for movement joints. Access to East Dulwich is via the A2214 and A2215 among other routes, so getting applicators and materials to site is simple. Sites close to East Dulwich are covered too, including Denmark Hill (1 mile north-west), Herne Hill (1 mile south-west), Dulwich Village (1 mile south), Camberwell (1 mile north) and Peckham (1 mile north-east). Bigger towns within reach include London (3 miles north), City of Westminster (5 miles north-west), Marylebone (5 miles north-west), Kensington (6 miles north-west), St Pancras (5 miles north) and Shoreditch (4 miles north).
Near you in East Dulwich
We work on buildings around The Fox on the Hill pub, The Charter School East Dulwich and The Charter School. There’s a railway station in East Dulwich itself: East Dulwich station. Other landmarks nearby include House of Dreams Museum (less than half a mile south-east) and Surrey Quays Shopping Centre (2.8 miles north-east). For a walk, there’s Knight's Hill and Centre for Wildlife Gardening.