The Mastic Doctor team standing beside their branded vans outside an office building
Greater London · England

Expansion and movement joint sealing in Old Town, Greater London

Looking for expansion joint sealing in Old Town? It’s simple: send details, get a quote, we seal, guaranteed.

  • Joints where the bead has lost adhesion
  • Spalled or broken joint edges in floors and decks
  • Water dripping through deck or ramp joints
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Expansion joint sealing for Old Town sites

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

How we handle expansion joint sealing in Old Town

Buildings and slabs are never completely still: they expand in the heat, shrink as they dry, and shift under load. Expansion and movement joints are built in so the structure can move without cracking. We seal and reseal movement joints in walls, panels, decks and floors for buildings in Old Town. We work on precast concrete panel joints, podiums and floor movement joints and brickwork movement joints, and what we’re called in for most is car park joints leaking onto vehicles below and previous reseals laid over old sealant. For commercial sealant work in Old Town, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.

Areas such as a loading bay or car park deck in Old Town usually have to stay in use. Joints are done in sections, with bays coned off one after another, so the site keeps operating, at times agreed with the building manager.

Every job we finish is backed by a 12-month workmanship guarantee, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.

Location
Old Town (CR0, CR9, CR90)
Region
Greater London
Cover
12 months on our workmanship
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

When something else is needed

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Joints too narrow for the movement, which need redesigning by the engineer
  • Damaged metal nosings or cover plates over a joint
  • Concrete or masonry repairs along the arrises

If you are not sure, just call the office on 01277 525 020 or email us and we’ll give you a straight answer before you book.

Joints and surfaces we work on

  • Cladding panel joints
  • Podiums and floor movement joints
  • Blockwork control joints
  • Car park decks and ramps
  • Brickwork movement joints
  • Precast concrete panel joints

Quoting for work in Old Town

These are the things that shape the price:

  • Travel to remote or island sites
  • Whether old sealant has to be cut out first
  • Site requirements such as inductions and permits
  • The product specified

The product called for affects the cost, and so does the preparation. Access, phasing and site requirements come into it too.

What to include in your enquiry

A few photos plus some basic facts will normally do. Please tell us:

  • Whether the building will be occupied during the work
  • Specification clauses that apply
  • Asbestos survey details if the building is older
  • Approximate linear metres or a joint schedule

Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.

Leave it or put it right?

Patching the worst lengths of a joint can make sense short term. The remaining sealant is often close to failing too and repeated access costs add up. Where it helps, we quote both options. Access in London is hard enough to arrange once, so it makes sense to deal with every failing joint while access is in place.

The price depends on how many linear metres there are, what has to come out first and the access. Call for a fixed quote when you’re ready.

Why choose Mastic Doctor in Old Town

  • Clear, fixed quotes
  • A Constructionline member, so easy to vet
  • CHAS accredited
  • Matching to RAL references, product permitting

Take a look at what affects the cost or our accreditations.

Maintenance after handover

To get the most from the new sealant:

  • Look over external and deck joints after a hard winter
  • Avoid parking heavy plant or pallets on joint lines
  • Inspect movement joints alongside other routine building checks
  • Leave barriers in place until fresh joint sealant has cured

Keep wheels, feet and water off new joints until the sealant has cured. The time varies with product, conditions and joint depth, and we confirm it for each area before we leave. Barriers left in place until then protect the finish.

Once debris packs a failed joint, the structure has nowhere to expand. The arrises crack and break away under the load, turning a sealant job into a repair job. Keeping the seal sound avoids all of that.

FAQs: Old Town

Does your area include sites such as Pilton Industrial Estate, near Old Town?

Yes. Estates, retail parks and business parks around Old Town, Pilton Industrial Estate among them, are all within reach. To start, just ring 01277 525 020 or email the details over with the unit, the joints involved and your access times.

Can you work on a hospital site such as Croydon University Hospital?

Yes, provided the work is planned with the site’s estates team. Each area is agreed with the ward or department and the estates team in advance.

How soon can the area be used again?

The product and site conditions decide that. Some take light use quickly, others need longer to cure, so we’ll confirm the curing time on the day.

Do you have public liability insurance?

Yes. Our insurance certificate can be sent alongside the quote.

What happens if it rains on the day?

Weather matters for any external joint because a damp or frozen joint won’t take a proper bond. Internal floor joints are far less affected.

What if there’s asbestos in the old mastic?

Asbestos is possible in some older mastics, particularly in buildings from before 2000. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and work stops until any suspect material has been tested. Removing asbestos is a job for asbestos specialists, not us.

How long does movement joint sealing take?

The metres of joint, the access and the amount of removal decide it. Typically it takes anything from part of a day to a couple of weeks, depending on joint lengths, widths and access.

Expansion joint sealing in Old Town: the local picture

Basement car parks and service yards in London tend to be in use all working day, which is why we work a few bays at a time. At least three named trading, business or retail sites lie within about 3 miles of Old Town. That puts plenty of warehouse floors, service yards and car parks close by, all with joints under traffic.

Hospital campuses such as Croydon University Hospital (1.2 miles north of Old Town) grow in stages, leaving movement joints wherever new blocks meet old. Centres like Whitgift Centre (to the north-east of Old Town) have mall floors and service decks whose joints carry steady traffic. Another example is Progress Business Park, 0.7 miles to the west of Old Town, where floors and yards would be done in stages around the occupiers.

Old Town is about 1 mile north-west of Croydon, in Greater London. Old Town sits inside our coverage, with the same fixed quotes and 12-month guarantee as everywhere else. 764 places across Greater London fall within our area, Old Town among them. London is covered too, around 9 miles from Old Town.

Anyone looking for expansion joint sealing in CR0, CR9 and CR90 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Among the streets we cover are Park Lane, Fell Road and Abbey Road, and sites on any of them can send details for a fixed quote. If your building is just outside Old Town, we cover Waddon (1 mile south-west), Broad Green (1 mile north), Beddington (1 mile west), Bandonhill (1 mile south-west) and Russell Hill (2 miles south-west). A short drive away, we cover London (9 miles north), City of Westminster (10 miles north), Marylebone (10 miles north), Kensington (10 miles north-west), St Pancras (11 miles north) and Shoreditch (11 miles north).

Landmarks near Old Town

We work on buildings around Rutherford School, The Gun Tavern and St Andrew's CofE School and the streets around them. Old Town has its own railway station: West Croydon station. Nearby you will also find Croydon University Hospital (1.2 miles north) and Croydon Airport Visitor Centre (1.3 miles south-west). Open spaces near Old Town include Roundshaw Downs and Duppas Hill.

Map of Old Town © OpenStreetMap contributors

On site: what to expect

We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. Once we’re cleared to begin, the joints are worked through in the order agreed with your site contact. For a job in Old Town, access comes first. Give us the hours we can be on site and we will schedule to suit.

  1. We look at the joints, their width and how they’ve failed.
  2. A fixed quote follows, naming the sealant and its movement class.
  3. We strip out the old seal and prepare the faces, flagging any broken edges that need repair before sealing.
  4. We control the depth with backing rod or, in shallow joints, bond-breaker tape.
  5. Where the maker calls for primer, it’s applied first, then the bead goes in and is tooled to a concave finish.
  6. We check every joint before sign-off, and the work carries our 12-month guarantee.

Before we start on site

  • For older buildings, check the asbestos register before work
  • Send your site hours and access windows
  • Let us know about inductions and permits

Get a fixed quote

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, call 01277 525 020 or email drawings and photos.

Ask for a quote

Related advice

Commercial clients in Old Town

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Old Town can form part of a wider programme across Greater London.

Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. Programme, specification and site rules come first, with CSCS-carded applicators on site.

Accreditations

Trusted. Accredited. Insured.