South East England and London
Coloured Sealant in City of London
Wherever your site is in City of London, we cover coloured sealant in all 7 towns and villages, with a fixed quote and a 12-month guarantee.
Coloured Sealant across 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.
Towns we cover in City of London
Coloured and colour-matched sealant for visible joints. Choose your town from the list to see local details, or send details for a fixed quote.
Biggest towns in City of London
Also in City of London
- Mastic sealing for building owners and managing agents
- Fire-rated sealing and fire stopping
- Expansion and movement joint sealing
- Commercial washroom and wet-area sealing
- Industrial and floor joint sealing
- Construction and new-build mastic
- Facade and window perimeter sealing
- Commercial sealant contractors
Postcode districts
How coloured sealant works in City of London
Stone, brick and cladding each bring their own colour challenge: a stone or brick facade shifts in tone from one area to the next. We choose a colour that reads well across the surface rather than chasing one spot, with a sample on site if colour is critical. We work on cladding panels, shop-fit joinery and counters and powder-coated and anodised frames, and what we are called in for most is coloured joints that have cracked with movement and marked sealant in hotel bathrooms.
Before we leave any area, the masking comes off, the area is cleaned and every joint is checked, ready for your sign-off. If an area should be left alone while the sealant cures, we say how long and put signs out.
- We confirm the product the joint needs before talking about colour.
- Colour references, samples or photos of the finish are checked against the product’s range.
- Where colour is critical, a sample bead can be agreed in a discreet spot.
- We remove the existing bead, clean the faces and set the depth.
- We apply the agreed colour and tool it neatly, with masking where the finish needs it.
How we quote
Access often affects the price as much as the sealing: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.
Why choose Mastic Doctor
- Our applicators hold CSCS cards
- Failed material removed, not covered up
- Matching to RAL references, product permitting
- A Constructionline member, so easy to vet
Quotes
Need a figure for a tender or a budget? We will quote against your scope and drawings that you can work with. For a chat about it beforehand, ring 01277 525 020 or email the details over.
Local landmarks in City of London
Locally, jobs take us to sites close to Fashion Retail Academy, Prior Weston Primary School and Children's Centre and Barts Health Archives and the streets around them. Nearby too are 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. Well-known places in the area include 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.
- Churches close by include St Olave Old Jewry (under half a mile east)
Where commercial joints are in City of London
Shop fits, office refurbishments and hotel refits in towns such as Smithfield, Barbican Estate and Bishopsgate all leave joints that need sealing. Visible joints call for a matched colour and a clean tooled finish.
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: Offices and shops close to stations such as London Cannon Street station (to the south of City of London) tend to be busy all day, so sealant work is planned around opening hours. If you run an office at a site such as Southwark Bridge Business Centre (0.8 miles south of City of London), the sealant at reception desks, tea points and frames ages with each fit-out.
Why act early?
Leaving a failed coloured joint risks more than appearance. Behind the bead, moisture can damage substrates and finishes, so it’s worth fixing early.
What your quote should include
- Will failed sealant be removed rather than covered?
- What the guarantee covers, and for how long
- Their public liability cover
- Is the sealant right for the movement and the substrate?
Looking after the joints
Problems stay small when the joints are checked regularly. In particular:
- Agree the sealant colour early and write it into the specification
- Clean coloured joints with mild products
- Insist on the agreed colour for any repair
- Keep the area clear while the sealant cures
Give the sealant its full cure time before cleaning or handling the area. Coloured sealant marks more visibly than white while it is fresh.
Approve a sample where colour really matters. A sample in real light shows how it will look.
Different surfaces, different methods
Brick and masonry
Brickwork joints normally look best in a colour close to the mortar or brick. The nearest colour in the range is agreed with you.
Paintable sealants
Overpainting is most common on internal joints with little movement. If the joint needs a product that can’t be painted, we say so.
When something else is needed
Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be one of these:
- Paintable products in joints they aren’t suited to
- Preventing all fading from sunlight and weathering
- Cleaning or repairing the surrounding finishes
What we are called out for in City of London
Internal joints can stain from cleaning products, spills or mould. Mould that has rooted into a bead rarely cleans out.
Things that usually lead to an enquiry:
- Old colour-matched joints lifting at the edges
- Smeared sealant on stone or joinery
- Stained or mouldy coloured joints in washrooms
- White or grey sealant that clashes with the finish
FAQs: City of London
Does a coloured sealant perform differently from a standard one?
Performance comes from the sealant type and the installation. The joint gets the product it needs, in a colour from that product’s range with the same preparation and backing.
What do you charge?
Every job gets its own fixed quote. For yours, give us a call on 01277 525 020 or send details through our quote form.
Are you CHAS accredited?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.
Which sealant will you use?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
How do I request a quote?
You can use the quote form on this site; alternatively, ring 01277 525 020 or use the quote form. Photos, drawings or a joint schedule help us quote quickly.
Do you work to architects’ specifications?
Yes. Send it with your enquiry, and the quote will be based on it.
Can wet areas have colour-matched sealant?
Yes. Sanitary silicones with anti-mould additives come in a range of colours too. We will confirm what’s available for the specified product.