South East England and London
Construction Mastic in City of London
We cover 7 towns and villages in City of London for construction mastic, with failed joints always cut out and a 12-month guarantee on our workmanship.
Construction Mastic in City of London
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Construction mastic in every part of City of London
Mastic packages for new-build and refurbishment projects. Pick your town below to see the details for your area, and call or email us for a quote.
Biggest towns in City of London
Other services in City of London
- Industrial and floor joint sealing
- Commercial sealant contractors
- Expansion and movement joint sealing
- Mastic sealing for building owners and managing agents
- Facade and window perimeter sealing
- Coloured and colour-matched sealant
- Fire-rated sealing and fire stopping
- Commercial washroom and wet-area sealing
Postcode districts
How construction mastic works in City of London
Mastic Doctor has been a subcontractor on construction projects for over 20 years. We price from drawings and the specification, agree the sequence with the site team and seal as areas are released. For construction mastic on a scheme in City of London, send drawings through our quote form, or phone or email us to talk it through. The enquiries we see most involve sanitary sealant damaged by following trades and different trades sealing to different standards, across brick and block movement joints, floor and skirting junctions and sanitary and kitchen joints.
Occupied buildings need a little choreography. We sign and contain the area we’re in, with routes through the building left open and move on in phases so staff and visitors can carry on around us.
- Drawings, specification and programme come to us.
- Quantities are measured and a fixed price returned.
- The sequence is agreed with the site manager.
- Each area is sealed when it’s released.
- Joints are prepared, backed and sealed to the specification.
- After snagging, the work is handed over under our 12-month guarantee.
What affects the price in City of London
The product called for affects the cost, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.
Why choose Mastic Doctor
- Constructionline member for supplier checks
- Fully insured, including public liability cover
- RAL and finish matching where the product range allows
- Old sealant cut out, never sealed over
Get a fixed quote
Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we will fill any gaps with a visit.
Landmarks near City of London
Recent enquiries here include premises near Fashion Retail Academy, Prior Weston Primary School and Children's Centre and Barts Health Archives. You will also find Golden Fleece pub (under 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). There’s a railway station in City of London itself: 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). Green spaces nearby include St. James's Park Lake and Barnsbury Wood.
- Churches close by include St Olave Old Jewry (less than half a mile east)
Construction mastic across City of London: the area picture
Across City of London, refurbishment brings as many facade and perimeter joints as new build: replacement windows, recladding and fit-outs in places such as Smithfield, Barbican Estate and Bishopsgate. New frames against old masonry need a product, primer and joint design to suit both.
London and the South East are among the drier parts of the UK, but external sealing in City of London still needs a dry joint and the right temperature, and damp or frosty mornings can hold it up.
City of London: Units on estates such as Southwark Bridge Business Centre (to the south of City of London) tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal. For contractors on a campus like Queen Mary's University West Smithfield Campus, less than half a mile north-west of City of London, facade and perimeter sealing has to fit around students and term dates.
How the job changes by surface
External facade and movement joints
Movement joints in the facade are sealed with a product suited to the expected movement. Depth is controlled with backing rod so the bead bonds to two sides only.
Fire-rated sealant where specified
Fire-rated sealant forms part of some packages, installed to the product’s tested detail where it is specified. Fire stopping design belongs to the designer and building control.
Why it fails
On construction sites, joints typically fail early because of when they were sealed, not what was used. If sealant goes in before the last trades are through, it gets knocked, painted over or contaminated.
What tends to prompt an enquiry:
- New external sealant already peeling away
- Perimeter gaps outside the sealant’s range
- A long mastic snag list close to completion
- Missed perimeter joints on a new elevation
Honest limits
We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Glazing units that are cracked or misted
- Rework caused by others damaging completed areas
Building owners, agents and FMs in City of London
Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, with each stage agreed with your site contact.
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 will confirm with the quote.
When to bring in a specialist
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong typically costs more in the end than doing them right.
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.
Your questions answered
When is resealing likely to be due?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Treat them as maintenance items and inspect them regularly.
How do you work with the site programme?
We work to your programme. Tell us the sequence and we will plan applicators around it.
Is any job too small?
Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.
Are you insured?
Yes. We’re fully insured, and the certificate can go with your quote.
How soon can the area be used again?
Curing time varies by product, and we confirm it on the day.
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.
Can you quote from photos?
Many jobs can be quoted from photos, drawings or a joint schedule. Where they aren’t, we arrange a site visit before quoting.