Construction and new-build mastic in Soho, Greater London
Mastic packages for new-build and refurbishment projects in Soho and across Greater London. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Missed perimeter joints on a new elevation
- A mastic package split between trades with no clear owner
- Bath and shower joints scraped during the final clean
Need construction mastic in Soho?
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Looking after the joints
Sealant joints are maintenance items, and how long they last depends on how they’re treated. We suggest:
- Don’t force external sealing on a damp or frosty day
- Put any product change through the designer first
- Share drawings and the specification as soon as possible
- Keep product details for future maintenance
Any damage after we have finished should go on the snag list straight away. Snags can be picked up in a planned close-out visit as agreed in the quote.
Leaving the mastic snag list to the end squeezes everyone. A planned close-out through each area as it completes keeps the list short, and avoids a rush.
Construction mastic in Soho
Buyers, tenants and clients notice sealant lines long before they notice the structure. Untidy or missed joints are among the commonest snag items. Our aim is joints that pass at the first inspection, whatever the size of the scheme. Site teams most often ask us about external joints sealed in damp or cold conditions that are now failing and cracks opening in caulked internal joints, across sanitary and kitchen joints, cladding and panel joints and brick and block movement joints. Whether you call it commercial sealant work, mastic application or joint sealing, in Soho it comes down to the same thing: the right product in a properly prepared joint.
The ULEZ covers the whole of Greater London, so contractors’ vehicles on a job in Soho must meet its standards or pay the daily charge. Alongside that, sites typically need booked deliveries and a plan for where materials go.
Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and the quote explains what it covers.
- Place
- Soho (W1F, W1T, W1D)
- Wider area
- Greater London
- Cover
- 12 months on every job
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Nearby places to Soho
What else we do in Soho
New build and refits around Soho
The area within 2 miles of Soho holds plenty of hotels. Hotel extensions and refits usually have to fit around bookings, so mastic dates are tight. The ULEZ covers the whole of Greater London, Soho included, so site vehicles need to meet its standards or pay the daily charge. Add booked deliveries and tight storage, and the mastic package needs planning with the site team.
When a college such as Westminster Kingsway College Soho Centre, under half a mile west of Soho, builds or refurbishes, the mastic package usually has to fit around students and staff. Hospital estates such as Royal London Hospital for Integrated Medicine, 0.7 miles north-east of Soho, tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan.
Soho is about 1 mile east of City of Westminster, in Greater London. Soho sits inside our coverage and the rest of Greater London, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our Greater London coverage takes in 764 places.
We cover the W1F, W1T and W1D postcode districts for mastic packages. For a building on Duck Lane, Drury Lane and Bridle Lane or nearby, send details and we’ll quote for mastic packages. Being close to the A4 and A301, Soho is straightforward for us to reach. Sites close to Soho are covered too, including West End (1 mile east), Chinatown (1 mile south), Seven Dials (1 mile east), St Giles (1 mile north-east) and St James's (1 mile south). A short drive away, we cover Kensington (3 miles west), Walthamstow (7 miles north-east), Whitechapel (3 miles east), Hampstead (3 miles north-west), Ruislip (13 miles west) and Stockwell (3 miles south).
What’s near Soho
Locally, jobs take us to sites close to Bar Soho, St Anne's Churchyard and Harris Westminster Sixth Form, among other places. Other local landmarks include LITE Regal International School (0.6 miles west) and London Library (0.5 miles south-west). There’s a railway station in Soho itself: Tottenham Court Road station. Well-known places in the area include Kingly Court (under half a mile west) and Montfichet's Tower (1.3 miles east). Not far away are St. James's Park Lake and Ludgate Hill.
What we can’t put right
A proper diagnosis includes knowing what sealant can’t do. We will tell you if the real problem is one of these:
- Joint design decisions that belong to the architect or engineer
- Faulty frames rather than failed sealant
- Joints damaged after sign-off by following trades
Not sure which it is? You can phone 01277 525 020 or send details through our quote form and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Brick and block movement joints
- Internal decorators’ caulk
- Floor and skirting junctions
- Sanitary and kitchen joints
- Window and door perimeters
- Cladding and panel joints
What we are called out for in Soho
Shrinkage and settlement in the first months put new joints under strain. Materials lose construction moisture and shrink. Picking a flexible sealant where there’s movement keeps snags down.
Most enquiries start with something like this:
- Caulk cracking where joints are moving more than expected
- Failed sealant in an existing building being refurbished
- Window and door perimeters that won’t pass inspection
- A mastic package split between trades with no clear owner
Hotel extensions and refits, at places such as The Piccadilly London West End Hotel, which lies south-west of Soho, normally run between busy periods, so the sealing is squeezed into short windows.
What your quote should include
- How joint depth will be controlled
- Do they follow the manufacturer’s priming guidance?
- The terms of the workmanship guarantee
- How they’ll work around occupants
Building owners, agents and FMs in Soho
Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, and each stage is agreed with your contact.
For main contractors, we work as the sealant subcontractor. We work to your programme, your specification and your site rules.
General trades versus a specialist
What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.
Our process
Site rules come first: sign-in, induction and whatever permit system the building uses. Once we are cleared to begin, we take the joints in the sequence agreed with you. Planning a London job such as one in Soho starts with access. Give us the hours we can be on site and we will schedule to suit.
- We start with the drawings, specification and programme.
- We take off quantities and return a fixed quote.
- We agree with the site team which areas come first.
- Plots or floors are sealed as they’re handed over.
- Every joint is cleaned, set to depth and sealed with the specified product.
- After snagging, the work is handed over under our 12-month guarantee.
Getting the site ready
- Let building users know which areas are affected
- Explain the parking and delivery arrangements
- Send asbestos survey details if the building is pre-2000
Quotes
Tell us about the building, the joints and when you need the work done, and we will put a fixed quote together. The easiest way is to speak to us on 01277 525 020 or use the quote form.
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Soho: questions and answers
Do you cover business parks and estates near Soho, such as Grand Vitesse Industrial Estate?
Yes. We cover Soho and the area around it, including industrial estates, business parks and retail parks such as Grand Vitesse Industrial Estate. Send details of the unit and the work through our quote form for a quick quote.
Do you take on work at healthcare sites like Royal London Hospital for Integrated Medicine?
Yes, healthcare and care buildings are part of our work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
Do you take on mastic snagging only?
Yes. Damaged, missed or untidy joints are stripped and done again properly.
Can you handle several sites?
Yes. A group of buildings can go on one quote, with one point of contact across South East England, Greater London and Scotland.
Do you have public liability insurance?
Yes. Our insurance certificate can be sent alongside the quote.
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. If anything suspect turns up, we stop until it’s tested.
Can you quote from photographs?
It depends on the job. Simple work can often be priced from photos, and bigger or more complex jobs normally get a visit.