Floor Joint Sealing in Custom House
Sealant work in Custom House for main contractors, managing agents and facilities managers: floor joint sealing and filling in warehouses, factories and industrial units, with a fixed quote first.
- Failing joints at loading bays and dock doors
- Filler that has parted from one face
- Soft sealant dragged out of trafficked joints
Floor joint sealing across Custom House
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Work for main contractors and building owners
Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm with the quote.
Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Custom House can form part of a wider programme across Greater London.
Floor joint sealing for commercial buildings in Custom House
Mastic Doctor has worked on joints in commercial buildings for over 20 years. Our CSCS-carded applicators follow your site induction and rules, and we are CHAS accredited and a Constructionline member holding public liability insurance. Finished floor joints in Custom House carry our 12-month guarantee. Most enquiries involve dock area joints that have failed first and scruffy, dirty joint lines on a shop or showroom floor, across loading bays, retail and showroom floors and saw-cut induced joints. Searching for sealant specialists in Custom House? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.
Distribution and trade units on London’s edges, and deck car parks across the city, hold most of its floor and slab joints. Planning a job in Custom House means thinking about access, loading times and the ULEZ as well as the joints.
A 12-month guarantee applies to all our work. Should something we installed fail, call 01277 525 020 or use the quote form and we will come back to it.
- Location
- Custom House (E16, E13)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Price
- A fixed quote before we start
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Keeping the joints sound
Keep the joints in good shape with a few simple steps:
- Mention any aggressive cleaning regime at quote stage
- Plan for a top-up on newer floors
- Keep grit out of unfilled joints in the meantime
- Start with the dock areas, where joints fail soonest
If a joint we filled starts to break up within 12 months, tell us and we’ll arrange a look. Beyond that, an inspection once or twice a year catches failing joints early.
Edges tend to break slowly at first, then quickly. Once the first piece is out, wheels drop further and hit harder, so it pays to act at the first signs.
Nearby places to Custom House
Other services in Custom House
Our process
Where the site stays busy, the work is phased so only one area is out of use at a time. Each area is protected, prepared and sealed, then handed back before the next one starts. Planning a London job such as one in Custom House starts with access: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Send the building rules and access times with your enquiry.
- First comes a walk of the floor to record joint sizes, broken edges and traffic routes.
- The quote fixes the price, names the filler or sealant and shows how the floor will be zoned.
- Old filler, debris and contamination are cut or routed out back to clean concrete.
- Dust is sucked out of the joint and a primer used if the product data sheet asks for one.
- The chosen product is placed to its specified depth and trimmed level with the floor.
- The area is handed back once it has cured enough to take traffic.
Before we start on site
- Warn occupants and staff about the work
- Move anything stored against the joints
- Confirm the product named in the specification
Getting a fixed quote
Send us photographs, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.
Advice
General trades versus a specialist
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
What the job involves on each surface
Forklift and pallet-truck routes
Open route joints are hard on equipment and drivers. A filled joint lets wheels roll across and protects the floor.
Loading bays and dock areas
Loading bays combine the heaviest turning loads with wet tyres and cold air from open doors. Joints here normally fail first, so they are often the place to start.
Questions about Custom House
Is hospital work, at somewhere like Newham University Hospital, something you do?
Yes. Healthcare sites are among the places we work. Each area is agreed with the ward or department and the estates team in advance.
Does your area include sites such as Greenshields Industrial Estate, near Custom House?
Yes, sites like Greenshields Industrial Estate are within our area, along with the rest of Custom House. A few photos and the unit address let us price the work.
Do you work to architects’ specifications?
Yes. The specification and the manufacturer’s installation guidance are what we work to.
Do you guarantee industrial floor joints?
A 12-month guarantee covers the work we do. It applies to our workmanship rather than structural movement or accidental damage.
Should floor joints be filled or sealed?
There isn’t one answer for a whole floor. Where hard wheels cross, a semi-rigid filler is typically right and perimeter or movement joints need flexibility. You will see the choice for each area in the quote.
Do you hold CHAS accreditation?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member.
Do you seal on top of existing sealant?
No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
When it isn’t the sealant
Our job is the joint, not everything around it. Sealant alone won’t deal with:
- Wide or random cracking that suggests a structural issue
- Unstable slabs moving under traffic
- A floor that is out of level for the racking or trucks
If you are not sure, just phone 01277 525 020 or email drawings and photos and we will give you a straight answer before you book.
What we seal
- Joints along racking aisles
- Forklift and pallet-truck routes
- Loading bays
- Saw-cut induced joints
- Construction joints
- Retail and showroom floors
Traffic, movement and joints around Custom House
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. The 3 miles around Custom House take in at least three named trading estates, business parks or retail parks. That puts plenty of warehouse floors, service yards and car parks close by, all with joints under traffic.
Hospitals like Newham University Hospital (1 mile north of Custom House) have multi-storey or surface car parks whose joints carry vehicles round the clock. Campuses like Ravensbourne University London (to the west of Custom House) mix old and new buildings, with movement joints wherever they meet. At a retail site such as Brocklebank Retail Park (1.2 miles south of Custom House), trolleys, cages and cars run over floor and slab joints all day.
Custom House is about 1 mile south of Canning Town, in Greater London. Businesses, contractors and managing agents in Custom House use us for work on floor joints, as part of our coverage of Greater London. Our Greater London coverage takes in 764 places.
Business premises anywhere in E16 and E13 are within our area for floor joints. Streets here include Tree Road, Ethel Road and Booth Road. Main routes into Custom House include the A1020. If your building is just outside Custom House, we cover West Silvertown (1 mile south-west), Silvertown (1 mile south), Canning Town (1 mile north), Royal Docks (1 mile east) and Limmo Peninsula (1 mile west). Nearby towns on our patch include London (5 miles west), City of Westminster (8 miles west), Marylebone (8 miles west), Kensington (10 miles west), St Pancras (6 miles west) and Shoreditch (5 miles west).
Near you in Custom House
We work on buildings around Thames Barrier Park, The Royal Docks Community School and Royal Docks Academy and the streets around them. There’s a railway station in Custom House itself: Custom House station. A little further out are Gallions Reach Shopping Park (2.2 miles east) and Charlton Athletic Museum (1.5 miles south). Not far away are Gilbert's Pit and Tower Hill.