City of London · England
Commercial sealant contractors in EC1A
Commercial sealant, construction mastic and joint sealing across EC1A, covering City of London, with a fixed quote before we start.
Sealant contractors for EC1A
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Places in EC1A
Sealant work we offer in EC1A
- Commercial washroom and wet-area sealing
- Industrial and floor joint sealing
- Expansion and movement joint sealing
- Mastic sealing for building owners and managing agents
- Fire-rated sealing and fire stopping
- Coloured and colour-matched sealant
- Commercial sealant contractors
- Construction and new-build mastic
- Facade and window perimeter sealing
- Every service
Tell us what needs doing and your postcode and we’ll come back with a price: ring 01277 525 020 or email us.
Districts next door
Elsewhere in City of London
Towns and villages in City of London
Areas we cover
Commercial sealant contractors across EC1A: what to expect
How long a joint lasts is decided before any sealant leaves the gun. Old silicone gives new sealant nothing to grip, so every trace of it is removed, then both faces are cleaned back to sound, dry material with no dust or grease on them. Primer is used wherever the manufacturer calls for it on that surface, and a backing rod limits the depth to give the sealant room to work. We work on floor and threshold joints, washrooms and tea points and window and door perimeters, and the usual reasons a site gets in touch are gaps behind commercial kitchen worktops and sinks and leaks that seem to come through a sealant line.
Occupied buildings need a little choreography. We sign and contain the area we’re in, keep walkways clear and move on in phases so staff and visitors can carry on around us.
- First, details reach us through the quote form or a site visit.
- We diagnose the cause of failure and price a fixed scope.
- Work is phased around your occupiers where areas need to stay in use.
- Old sealant is cut out completely, never sealed over.
- Each joint gets a suitable sealant, laid to depth and tooled.
- A final walk-round, then the 12-month guarantee applies.
What affects the price in EC1A
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 choose Mastic Doctor
- Clear, fixed quotes
- Coloured sealants to suit the setting, where available
- Colour agreed before work starts
- Specification-led, product-correct work
Getting a fixed quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.
Landmarks near City of London
Around City of London, our work takes us to commercial buildings near Fashion Retail Academy, Prior Weston Primary School and Children's Centre and Barts Health Archives, among other places. Also close by are Golden Fleece pub (under half a mile south), St Alphage Garden (under 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. Other landmarks nearby include Gabriel's Wharf (0.8 miles south-west) and London Mithraeum (less than half a mile south). For a walk, there’s St. James's Park Lake and Barnsbury Wood.
- Local churches include St Olave Old Jewry (under half a mile east)
Where commercial joints are in EC1A
Commercial buildings across EC1A range from older premises altered many times to recent units on business parks. Each building needs the right product for its surfaces, from stone and brick to coated aluminium and laminate.
Around the motorway corridors of the South East, business parks and industrial estates are common, and EC1A is part of the area we cover.
City of London: For a shop at a centre such as Brunswick Centre, 1.5 miles to the north-west of City of London, tidy joints at counters and displays matter as much as the fixtures. Sites a few miles apart, such as Southwark Bridge Business Centre and Grand Vitesse Industrial Estate, can share one programme and one point of contact.
Why it fails
If only one face has lost its grip, that’s an adhesion failure. Typical reasons include rushed preparation, no primer where one was needed, dust or release agents on the surface, or three-sided adhesion. We see it often where joints were sealed in a hurry.
What tends to prompt an enquiry:
- Mouldy silicone around WCs, urinals and vanity tops
- External beads that have gone brittle and cracked
- Window and door perimeter joints that have cracked open
- Untidy joints in a reception, shop floor or lobby
How the quote is worked out
There’s no standard rate for sealant work, since sites vary so much. What we take into account:
- The site’s rules and procedures
- Backing rod, priming and other preparation
- Distance, for remote addresses
- Phasing around occupants
We don’t publish prices, since every building and every scope is different. Call for a quote and we will price your job on its own details.
Sending details for a quote
The more we know, the firmer the quote. When you get in touch, include:
- The postcode of the building
- The type of building and who uses it
- Asbestos survey details if the building is older
- The product your specification calls for
Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.
Leave it or put it right?
A cheaper quote sometimes means the old bead stays in. New sealant laid on old silicone has nothing to bond to, so it peels. Every quote we give includes full removal and preparation, because that’s what makes the new bead last.
What your quote should include
- The terms of the workmanship guarantee
- How they’ll work around occupants
- Which product they’ll use, and why it suits the joint
- What site paperwork they can supply
How the job changes by surface
Window and door perimeters
Where frames meet the surrounding wall, sealant is the weather line. Failed perimeters are cut out and cleaned, backing goes into deeper gaps, and the joint is resealed with a low-modulus neutral-cure silicone or another suitable product.
Washrooms and toilets
Mould that has grown into washroom sealant can’t typically be cleaned out. Replacement is the fix: strip, clean, dry and reseal, planned so the building keeps enough facilities in use.
Honest limits
A proper diagnosis includes knowing what sealant can’t do. You’ll hear from us if the cause turns out to be one of these:
- A dripping trap, valve or pipe behind a fitting
- A failed roof covering or waterproofing membrane
- Old mastic that tests positive for asbestos
Your questions answered
Will you just go over the old sealant?
No, never. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.
Do you cover EC1A?
Yes. We cover EC1A, and you can ring 01277 525 020 or send photos by email to get started.
Do your applicators hold CSCS cards?
Yes. We use CSCS-carded applicators.
Are you CHAS accredited?
Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.
Is failed sealant stripped out, or sealed over?
Removal of the failed sealant is always part of the job. Laying new silicone on old gives it nothing to grip.
What do you need from us to quote?
Start with whatever information is to hand. We follow up with questions or a visit where needed.
Can areas stay open during the work?
Phased work can be planned so areas stay in use. We plan around the site hours and access windows you give us.