Construction and new-build mastic in Somers Town, Greater London
Our CSCS-carded applicators take on mastic packages for new-build and refurbishment projects in Somers Town. Send details for a fixed quote.
- External joints sealed in damp or cold conditions that are now failing
- Cracks opening in caulked internal joints
- Sanitary sealant damaged by following trades
Construction mastic for Somers Town sites
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Construction mastic in Somers Town, done properly
Perimeter sealing outside needs a dry joint and the right temperature. Each sealant has a temperature range, and damp, frost or condensation on frames stops work so it helps to sequence elevations with some flexibility. Internal sealing often fills those days. If you have inconsistent sealant finishes from plot to plot and old sealant on a refurbishment that needs stripping before new work, we can help. Most enquiries from Somers Town start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Around Somers Town, as across London, much of the work is refurbishing existing buildings as well as building new ones. Replacement windows, recladding and fit-outs leave perimeter and facade joints to seal, often next to people still using the building.
We stand by our work with a 12-month guarantee. That covers our preparation and application.
- Place
- Somers Town (NW1W, NW1, W1T)
- Wider area
- Greater London
- Cover
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Honest limits
Before quoting, we check that sealant is the right answer. It won’t put right:
- Glazing units that are cracked or misted
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Joint design decisions that belong to the architect or engineer
If in doubt, call 01277 525 020 or send photos by email and we’ll say what we think.
Where we work in Somers Town
- Brick and block movement joints
- Window and door perimeters
- Internal decorators’ caulk
- Sanitary and kitchen joints
- Cladding and panel joints
- Floor and skirting junctions
Site staff or a sealant 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.
Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Also near Somers Town
Also in Somers Town
Diagnose, treat, sign off
The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. For a job in Somers Town, access comes first: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Send the building rules and access times with your enquiry.
- 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.
- Every joint is cleaned, set to depth and sealed with the specified product.
- Snags are cleared and the package signed off with our 12-month guarantee.
Getting the site ready
- Confirm the product named in the specification
- Agree which areas must stay open
- For older buildings, check the asbestos register before work
Ask for a quote
Let us know the site, the scope and your timescale, and a fixed quote will follow. To get it moving, phone 01277 525 020 or send details through our quote form.
Related advice
When to call us in Somers Town
Value-engineered products sometimes end up in the wrong joints. A sealant that isn’t right for the substrate or the movement will fail ahead of time. We stick to the specified product, or put any alternative to you first.
It’s worth sending us details if you spot any of the following:
- Bath and shower joints scraped during the final clean
- Caulk cracking where joints are moving more than expected
- A mastic package split between trades with no clear owner
- A long mastic snag list close to completion
University estates such as University College London (less than half a mile south of Somers Town) tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal.
What to look for in a quote
- How they’ll work around occupants
- Proof of insurance
- Is the sealant right for the movement and the substrate?
- The terms of the workmanship guarantee
What the job involves on each surface
Kitchens and utility areas
Kitchen joints are sealed after fitting and before final clean. A kitchen-suitable sealant is used and hygienic or food-safe grades wherever food contact is possible.
Snagging before handover
Snagging is often the final mastic stage. We can work through the snag list area by area and damaged joints are redone rather than patched.
Facades, frames and programmes in Somers Town
The area within 2 miles of Somers Town holds plenty of hotels. When hotels extend or refit, the work is normally squeezed between peak periods, mastic included. As part of Greater London, Somers Town is inside the ULEZ, which applies to every van on site. Delivery slots and scarce storage shape how and when the mastic goes in.
For a contractor at a hotel such as St Pancras Renaissance London Hotel (under half a mile east of Somers Town), the mastic often has to be finished before a reopening date. For contractors at a college like WM College, which lies north-west of Somers Town, perimeters and internal sealant are timed for the holidays.
Somers Town is about 1 mile north-west of St Pancras, in Greater London. Commercial clients in Somers Town use us for work on mastic packages. 764 places across Greater London fall within our area, Somers Town among them.
If you need construction mastic in NW1W, NW1 and W1T, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. We cover commercial and managed buildings on Euston Road, Duke's Road and Phoenix Road and the roads nearby. Main routes into Somers Town include the A400 and A501, which helps when planning parking and deliveries for the job. Close to Somers Town, our area also takes in Euston (1 mile south), Kings Cross (1 mile east), Agar Town (1 mile north), Bloomsbury (1 mile south-east) and Fitzrovia (1 mile south-west). Bigger towns within reach include London (3 miles south-east), Kensington (4 miles south-west), Walthamstow (6 miles north-east), Whitechapel (3 miles east), Hampstead (3 miles north-west) and Ruislip (12 miles west).
Local landmarks in Somers Town
We work on buildings around Regent High School, Wellcome Collection and Lewis Cubitt Park, among other places. Also close by are UCL School of Slavonic and East European Studies (under half a mile south) and Prince Arthur pub (under half a mile south-west). Somers Town has its own railway station: London Euston station. Well-known places in the area include Brunswick Centre (0.6 miles south-east) and Montfichet's Tower (1.8 miles south-east). For a walk, there’s Barnsbury Wood and St. James's Park Lake.
Common questions from Somers Town clients
Would you work within a site like St. Pancras Hospital?
Yes, provided the work is planned with the site’s estates team. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
Does your area include sites such as Roman Way Industrial Estate, near Somers Town?
Yes. We cover Somers Town and the area around it, including industrial estates, business parks and retail parks such as Roman Way Industrial Estate. To start, just call the office on 01277 525 020 or email us with the unit, the joints involved and your access times.
What accreditations do you hold?
CHAS and Constructionline are both in place, and each applicator is CSCS-carded. We are fully insured for public liability.
Can you seal external joints in wet or cold weather?
External sealant needs a dry joint and a temperature within the product’s range. Frosty or damp mornings can hold up external sealing so we typically switch to internal work when that happens.
What’s the quickest route to a quote?
There are four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photographs and a postcode.
When can the area be used after sealing?
We’ll confirm how long the chosen product needs to cure, and sign any area that should be left alone.
Can weather delay the job?
It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.
What happens if it’s left?
It helps to bring the mastic subcontractor in before the package is urgent. We can check joint widths, flag frames with gaps that won’t seal and confirm products against the specification. Leave it late and they turn up on the snag list. Getting scaffold, permits or access booked in Somers Town takes effort, so it makes sense to deal with every failing joint while access is in place.
The product called for affects the cost, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.
Why us?
- One number for every site we cover
- Our applicators hold CSCS cards
- Fully insured
- A Constructionline member, so easy to vet
See how commercial sealant jobs are priced and our accreditations.