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

Cranham coloured sealant

Commercial sealant work in Cranham for contractors, FMs and building owners: coloured and colour-matched sealant for visible joints, quoted at a fixed price.

  • Fit-outs with a sealant colour in the specification
  • Sealant that no longer suits recoated frames
  • Old colour-matched joints lifting at the edges
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Need coloured sealant in Cranham?

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Coloured sealant in Cranham

A coloured bead has to perform like any other sealant. Each joint is cleaned, backed to depth and tooled firmly onto both faces, exactly as for a standard colour. Careful masking keeps the edges crisp. If you’re dealing with smeared sealant on stone or joinery and old colour-matched joints lifting at the edges, we can put it right, whatever the surface. Whoever orders the work in Cranham, the brief is normally the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Much of the planning for a London commercial job is about getting in and out: booked loading, goods-lift times, the permit system and a place to stage materials. Once that’s settled, the colour-matched joints are resealed in sections so tenants are disturbed as little as possible.

Every job is signed off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

Location
Cranham (RM14)
Wider area
Greater London
Guarantee
12 months on every job
Price
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

For managing agents and facilities managers

Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.

Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.

What happens if it’s left?

It’s far cheaper to approve a sample than to strip and redo a full run. A short trial bead costs very little. Access in London is hard enough to arrange once, so it makes sense to deal with every failing joint while access is in place.

Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.

Why clients in Cranham choose us

  • Colours chosen to suit frames, cladding or finishes where possible
  • One contact handling all your sites
  • Standard and matched colours in many product ranges
  • Constructionline member for supplier checks

Read how commercial sealant jobs are priced or our accreditations and insurance.

Honest limits

A proper diagnosis includes knowing what sealant can’t do. You will hear from us if the cause turns out to be any of the following:

  • Materials with mixed tones that defy a single match
  • A guaranteed perfect match to every finish
  • Repairing damaged frames or cladding

If you are not sure, just give us a call 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 panels
  • Office fit-out finishes
  • Hotel bathrooms and public areas
  • Shop-fit joinery and counters
  • Natural stone and brick
  • Powder-coated and anodised frames

Working on commercial sites near Cranham

Contractor rules in London buildings can be strict, with inductions, permits and timed loading all normal. We fit into those systems and phase the work so the building keeps operating. Less than 3 miles from Cranham there are two named estates and business parks. Units on sites like these change tenants and get refitted, and each refit leaves joints to seal; brand colours often come into it.

Premises within reach of Upminster station (0.7 miles west of Cranham) often have busy frontages where joints are seen by everyone passing. Industrial estates such as Childerditch Industrial Park (2.6 miles north-east of Cranham) have offices, trade counters and welfare areas whose sealant ages like any other building’s. A business with units at Childerditch Industrial Park and Horndon Industrial Estate needn’t use two contractors for its sealant.

Cranham is about 2 miles east of Hornchurch, in Greater London. Looking for coloured sealant in Cranham? We can help, as we do across Greater London. 764 places across Greater London fall within our area, Cranham among them. London is covered too, around 16 miles from Cranham.

Work on colour-matched joints is covered throughout RM14. Streets here include Avon Road, Moor Lane and Front Lane, and sites on any of them can send details for a fixed quote. Close to Cranham, our area also takes in Upminster (1 mile west), Puddle Dock (1 mile east), Upminster Bridge (1 mile west), North Ockendon (2 miles south-east) and Emerson Park (2 miles north-west). A short drive away, we cover Shoreditch (15 miles west), Walthamstow (13 miles west), Hoxton (15 miles west), Whitechapel (15 miles west), Orpington (14 miles south-west) and Plaistow (11 miles west).

Local landmarks in Cranham

We work on buildings around The James Oglethorpe Primary School, The Crumpled Horn pub and St. Andrew's Park. For rail, the closest station is Upminster station, about 0.7 miles west of the centre. Nearby you’ll also find The Mercury Mall (3.7 miles west) and Upminster Tithe Barn Museum of Nostalgia (0.6 miles north-west). For a walk, there’s Cranham Brickfields.

Map of Cranham © OpenStreetMap contributors

Common questions from Cranham clients

Will you take on work at estates like Childerditch Industrial Park, close to Cranham?

Yes. We cover Cranham and the area around it, including industrial estates, business parks and retail parks such as Childerditch Industrial Park. To start, just call 01277 525 020 or email us with the unit, the joints involved and your access times.

Can you match sealant colours for premises in Cranham?

Yes, we can typically get close to most finishes from the product’s colour range. Send colour references or photographs and we will confirm what’s available for the product.

What if there’s asbestos in the old mastic?

The duty to manage asbestos sits with the building’s dutyholder, so we’ll ask for the register before work on an older building. Work pauses if suspect material is found, until it has been tested.

Can you fit around our working hours?

Mention the site’s hours and access windows in your enquiry, and we’ll schedule the work to suit. You can reach the office between 8am and 5pm, Monday to Friday.

Can staff carry on working while you’re here?

Usually, yes. We phase the work so most of the building stays in use, with each area protected and signed.

Are you CHAS accredited?

Yes. We are CHAS accredited, we are a Constructionline member and we use CSCS-carded applicators.

Do you guarantee your work?

Yes. Workmanship is guaranteed for 12 months.

Should maintenance staff do it?

Some joints are best left to specialists: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

Aftercare for building managers

Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. We suggest:

  • Protect fresh coloured sealant from dust and handling
  • Approve a sample bead on high-profile areas
  • Keep the colour details for future repairs
  • Standardise colours across a portfolio

Let the joints cure as the manufacturer advises before they’re cleaned. Fresh coloured beads show fingerprints and dust more easily, so brief cleaners and other trades.

Approve a sample where colour really matters. A sample in real light shows how it will look.

How a job runs

We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. 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.

  1. The sealant type is chosen for the joint first, then the colour.
  2. Colour references, samples or photos of the finish are checked against the product’s range.
  3. A short trial length can be approved before the full run on visible work.
  4. We take out the existing bead, clean the joints and fit backing.
  5. We apply the agreed colour and tool it neatly, with masking where the finish needs it.

Before we start on site

  • Arrange parking or a loading space
  • Confirm the product named in the specification
  • For older buildings, check the asbestos register before work

Quotes

If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.

Get a quick quote

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