Mastic contractors in Holborn
Mastic packages for new-build and refurbishment projects across Holborn, by CSCS-carded applicators. CHAS accredited and fully insured.
- Sealant knocked or painted over by other trades
- Frame gaps too wide for sealant alone
- Early adhesion failures on new external joints
Construction mastic in Holborn
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
How we handle construction mastic in Holborn
The programme rarely stands still, so the mastic package has to flex with it. We agree a sequence at the start and adjust it as the site manager releases areas and we don’t seal before other trades have finished in an area. That keeps the work right first time and saves rework. Most enquiries involve snag items on joints that need redoing before handover and bath and shower joints scraped during the final clean, across internal decorators’ caulk, brick and block movement joints and cladding and panel joints. A specialist sealant contractor works differently from a general builder: on jobs in Holborn, preparation and product choice get the time they need.
Around Holborn, as across London, much of the work is refurbishing existing buildings as well as building new ones. New frames, overcladding and fit-outs all end in perimeter and facade joints, frequently with occupants close by, so tidy, well-planned work matters.
Work we carry out comes with a 12-month guarantee. Should something we installed fail, ring 01277 525 020 or send photos by email and we will come back to it.
- Where
- Holborn (WC1X, WC1N, EC1R)
- Wider area
- Greater London
- Cover
- 12 months on every job
- Quotes
- Quoted before any work starts
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Aftercare for building managers
To get the most from the new sealant:
- Don’t schedule sealing before decorators and flooring are done
- Brief following trades on areas that have been sealed
- Keep scrapers and abrasive pads off new beads
- Ask installers to correct oversized gaps first
Record which products went where in the handover file. That helps the building owner maintain the joints later. We can confirm the handover information you need when we quote.
Oversized gaps are a problem better caught early. Sealant stretched over an oversized gap won’t last, so the installer needs to correct it first. We raise them during our first walk of the area.
What we are called out for in Holborn
Shrinkage and settlement in the first months put new joints under strain. Plaster, screeds, timber and blockwork all shrink as they lose moisture, which opens up internal joints, particularly where caulk has been used in a joint that moves. Choosing the right product for each joint reduces that.
Most enquiries start with one or more of the following:
- Mastic snags holding up handover
- Frame perimeters left unsealed or poorly sealed
- Frame gaps too wide for sealant alone
- Caulk cracking where joints are moving more than expected
Hotel extensions and refits, at places such as The Bryson Hotel (less than half a mile north-east of Holborn), normally run between busy periods, so the sealing is squeezed into short windows.
What to look for in a quote
- Health and safety accreditation such as CHAS
- Whether primer will be used where the manufacturer specifies it
- The terms of the workmanship guarantee
- Will CSCS-carded applicators be on site?
Places near Holborn
More services for Holborn
New build and refits around Holborn
There are plenty of hotels within about 2 miles of Holborn. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up. As part of Greater London, Holborn is inside the ULEZ, which applies to every van on site. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for.
Further education sites such as Central Saint Martins College of Art & Design, less than half a mile to the west of Holborn, are extended and refurbished from time to time, with mastic often programmed into the summer break. When units on a site such as Grand Vitesse Industrial Estate, 1.2 miles south-east of Holborn, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.
Holborn is about 2 miles north-west of London, in Greater London. We send applicators to Holborn for mastic packages, handled exactly as we handle every other area. Across Greater London, 764 places are covered, including Holborn.
Business premises anywhere in WC1X, WC1N and EC1R are within our area for mastic packages. Buildings on Shoe Lane, Drury Lane and New Square are within our area. Main routes into Holborn include the A4 and A40, which helps when planning parking and deliveries for the job. If your building is just outside Holborn, we cover Farringdon (1 mile east), St Pancras (1 mile north-west), Clare Market (1 mile south), Smithfield (1 mile east) and Temple Bar (1 mile south). Nearby towns on our patch include Kensington (4 miles west), Walthamstow (6 miles north-east), Hampstead (4 miles north-west), Ruislip (13 miles west), Brompton (3 miles south-west) and Stockwell (4 miles south).
Local landmarks in Holborn
Locally, jobs take us to sites close to The Yorkshire Grey pub, British Library of Political and Economic Science and City Academy and the streets around them. Nearby too are Elizabeth Garrett Anderson School (0.9 miles north) and Lincoln's Inn Fields (less than half a mile south-west). Holborn has its own railway station: Farringdon station. A little further out are Montfichet's Tower (0.7 miles south-east) and Brunswick Centre (0.5 miles north-west). For a walk, there’s Barnsbury Wood and Ludgate Hill.
Common questions from Holborn clients
Can work at a site such as University of the Arts London fit around teaching?
Yes. Education sites usually want the work in vacations or in phases during term, and we plan to suit. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
Would you work within a site like Great Ormond Street Hospital for Children?
Yes. We work in healthcare settings as well as offices and schools. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
How do I request a quote?
The quote form is the simplest route, though you can also call 01277 525 020 or email drawings and photos. Include photos or drawings if you have them.
Do you do fire-rated sealing on new builds?
Fire-rated sealant can be included where it’s specified, installed to the product’s tested detail. The design and sign-off belong to the designer, fire engineer or building control.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to.
Can you quote from photographs?
That depends on the size and complexity of the job. Simple work can often be priced from photographs, and bigger or more complex jobs usually get a visit.
Can staff carry on working while you’re here?
Usually, yes. Phased work can be planned so areas stay in use, with each area protected and signed.
What affects the price in Holborn
Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:
- Working within restricted access windows
- Backing rod, priming and other preparation
- Site requirements such as inductions and permits
- Whether old sealant has to be cut out first
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well.
Details that help us quote
Whether it’s one area or a whole building, the same details help:
- Clear photographs of the problem areas
- Whether the building will be occupied during the work
- Any specification or named product
- The asbestos register, for older buildings
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.
How a job runs
Before we leave any area, we remove the tape, clean down and inspect every joint, ready for your sign-off. If an area should be left alone while the sealant cures, we say how long and put signs out. For a job in Holborn, access comes first. Give us the hours we can be on site and we’ll schedule to suit.
- We price from the drawings, specification and programme you send.
- A fixed quote sets out the scope, the products and the sequence.
- Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
- Work follows the programme, area by area, as rooms and elevations become ready.
- Every joint is prepared, set to depth and sealed with the specified product.
- Before handover, snags are dealt with and the package is signed off under our 12-month guarantee.
Before we start on site
- Point out any areas we must not close
- For older buildings, check the asbestos register before work
- Share your working hours and any access restrictions
Request a quote
A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or call 01277 525 020 or use the quote form to discuss it first.
Read more
Surface by surface
Bathrooms, en suites and washrooms
Sanitary joints around baths, showers, basins and WCs need anti-mould sanitary silicone. Joints are cleaned, sealed and tooled neatly, and any bath is loaded with water first where that’s the agreed method.
Fire-rated sealant where specified
Fire-rated sealant is one type of fire-stopping product. Other products are used for some services and gaps. Record requirements are agreed with the quote.
What happens if it’s left?
Sealing over damaged or contaminated new joints might save a day, but it rarely lasts. Sealant can’t grip a contaminated or existing bead. We cut out and redo the joint properly. In Holborn, each extra visit means more notices, permits and disruption, so cutting the old sealant out fully and doing it right once is the better route.
We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote.
Why clients in Holborn choose us
- Workmanship guaranteed for 12 months
- Public liability insurance in place
- RAL and finish matching where the product range allows
- Old sealant cut out, never sealed over
Take a look at how commercial sealant jobs are priced and our accreditations.