South East England and London
Expansion Joint Sealing in City of London
Expansion joint sealing in all 7 towns and villages of City of London, done properly, with a fixed quote before we start and a 12-month guarantee.
Book expansion joint sealing in City of London
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Expansion joint sealing across City of London
Expansion and movement joint sealing in walls, decks and floors. Choose your town from the list to see local details, or call or email us for a quote.
Main towns
More services in City of London
- Coloured and colour-matched sealant
- Commercial sealant contractors
- Fire-rated sealing and fire stopping
- Mastic sealing for building owners and managing agents
- Construction and new-build mastic
- Industrial and floor joint sealing
- Commercial washroom and wet-area sealing
- Facade and window perimeter sealing
Postcodes in City of London
How expansion joint sealing works in City of London
Joint design counts for as much as the sealant itself. Joint width must suit the movement and the movement class of the sealant while depth is limited by backing rod or, in shallow joints, a bond-breaker. 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 blockwork control joints, cladding panel joints and podiums and floor movement joints, and what we are called in for most is sealant peeling off one face of the joint and car park joints leaking onto vehicles below.
We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in.
- First the joints are inspected, widths measured and the type of failure noted.
- A fixed quote names the sealant we propose and its movement class.
- 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.
- Finished joints are inspected, the cure time confirmed and the 12-month guarantee applies.
Pricing in City of London
There’s no price list, since every building and every scope is different. Call for a quote and we’ll price your job on its own details.
Why choose Mastic Doctor
- A fixed quote before work starts
- Commercial sealant work since 2005
- Colour options checked against the specified product
- Failed material removed, not covered up
Get a fixed quote
A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we’ll arrange a site visit if anything is unclear.
Around City of London
In City of London, that means premises near Fashion Retail Academy, Prior Weston Primary School and Children's Centre and Barts Health Archives. Other local landmarks include Golden Fleece pub (less than half a mile south), St Alphage Garden (less than half a mile north), Central Foundation Boys' School (0.8 miles north) and St Mary-at-Hill (0.5 miles south-east). City of London has its own railway station: London Cannon Street station. A little further out are Gabriel's Wharf (0.8 miles south-west) and London Mithraeum (under half a mile south). For a walk, there’s St. James's Park Lake and Barnsbury Wood.
- Places of worship nearby include St Olave Old Jewry (less than half a mile east)
Estates, car parks and floors in City of London
Industrial estates, business parks and retail parks around Smithfield, Barbican Estate and Bishopsgate and elsewhere in City of London typically have floor and slab joints under daily traffic. Each joint needs a product suited to what runs over it and how much it moves.
All of Greater London is inside the ULEZ, and much of the South East is within easy reach of the capital, and every job in City of London starts with access, parking and site rules.
City of London: Phasing is what makes joint work possible on busy sites such as Grand Vitesse Industrial Estate (0.8 miles south-west of City of London): one bay, aisle or car park row at a time. A healthcare site such as St Bartholomew's Hospital, less than half a mile to the north-west of City of London, depends on car parks, ramps and service yards whose joints take traffic all day.
How the job changes by surface
Car park decks and ramps
Deck and ramp joints take tyre loads, grit and de-icing salts. A trafficable sealant suited to the movement goes in, phased so parts of the car park stay open.
Brickwork and blockwork joints
A brick movement joint full of old mortar or debris can’t close. Everything is raked out before backing and sealant go in, and tell you if the joint looks too narrow for the movement.
When something else is needed
Honesty saves time and money. New sealant won’t cure:
- Changing the joint layout or spacing of a structure
- Broken or spalled joint edges, which need repairing before any sealant goes in
- Damaged metal nosings or cover plates over a joint
Cost factors for movement joints
Each job is priced on its own details. The things that drive the figure:
- How much existing material needs removing
- Site requirements such as inductions and permits
- Access and working height
- The total length or number of joints
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a fixed quote.
Details that help us quote
Whether it’s one area or a whole building, these details speed things up:
- The type of building and who uses it
- Access details, including height
- Any dates the work must fit around
- Where the site is, with the postcode
Send us photos, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.
What we’re called out for in City of London
Some joints were never sealed with the right product. Products not classed for the movement fail early. BS EN ISO 11600 classifies building sealants by movement capability, and specifications often refer to it.
Common reasons buildings call us in:
- Chipped joint edges on forklift routes
- Previous reseals laid over old sealant
- Leaks through car park deck joints onto the level below
- Expansion joints split through the centre of the bead
Building owners, agents and FMs in City of London
Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. City of London can form part of a wider programme across City of London.
Whether you are a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.
City of London: questions and answers
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.
Is movement joint sealing guaranteed?
Each job is backed by a 12-month guarantee on the workmanship. Damage from later works or traffic loads outside the joint’s design isn’t a workmanship fault.
When is resealing likely to be due?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
Can you quote from photographs?
It depends on the job. Straightforward work can often be priced from photographs and measurements, and bigger or more complex jobs typically get a visit.
Can a joint be sealed if the edges are broken?
The edges have to be sound. If they’re damaged, we will say so before any sealing so you are not paying for a bead that won’t hold.
How do I request a quote?
There are four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. The first step only needs photographs and a postcode.
What exactly is a movement joint?
Put simply, it’s a planned break in a wall, slab or deck so the materials can move. Expansion joint is a name often used for the same thing, and either way it needs a sound seal.