Facade Sealing contractors in St Pancras
Need facade sealing in St Pancras? It’s simple: send details, get a quote, we seal, guaranteed.
- Water coming in around window frames
- Weathered facade joints that have lost their grip
- Facade joints cracked through the middle
Facade sealing in St Pancras
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
How we handle facade sealing in St Pancras
Installing framed glazing systems isn’t part of our work. We handle the sealant joints that surround those elements: perimeter joints where frames meet the structure, panel joints and window perimeters, using sealants classified for facade or glazing use. The enquiries we see most involve facade joints cracked through the middle and failed seals around shopfront and entrance frames, on shopfront frames, cladding panel joints and perimeter joints where frames meet the structure. A single leaking joint is often how a building in St Pancras first comes to us: we look at the rest while we are there and tell you what we find.
Construction in a London area such as St Pancras means working on constrained sites: limited storage, booked deliveries and access shared with other trades. Mastic is typically one of the last trades on each elevation or floor, so we keep to the programme and the order of trades the site sets.
Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we’re clear about what is covered before work starts.
- Place
- St Pancras (NW1W, W1T, N1)
- Region
- Greater London
- Cover
- A 12-month guarantee
- Price
- A fixed quote before we start
- Call
- 01277 525 020
- Updated
- 3 November 2026
Aftercare for building managers
Problems stay small when the joints are checked regularly. Specifically:
- Insist on a full cut-out when joints are renewed
- Note when each elevation was last resealed
- Plan facade sealing alongside redecoration
- Ask about asbestos in pre-2000 mastic
After heavy weather, check vulnerable elevations for signs of water inside. An early report typically means a small reseal rather than a bigger repair.
In pre-2000 buildings, check the asbestos register before old sealant is cut out. Older sealants can contain asbestos.
What happens if it’s left?
The longer a failed joint is left, the more the substrate suffers: wet edges break down, so repairs may be needed before resealing. Acting at the first sign of splitting keeps the fix simple. Repeat call-outs disrupt occupied London buildings, so cutting the old sealant out fully and doing it right once is the better route.
Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we will put a fixed figure on it.
What you get with us
- CHAS accredited
- A fixed quote before work starts
- Commercial sealant work since 2005
- Work to your specification and the manufacturer’s guidance
Take a look at what affects the cost or our accreditations.
When something else is needed
A proper diagnosis includes knowing what sealant can’t do. We’ll tell you if the real problem is any of the following:
- Render or concrete edges that have broken away
- Damp caused by condensation inside the building
- Joints too narrow for the movement they take, which need redesign
If you’re not sure, just speak to us on 01277 525 020 or email us and we’ll give you a straight answer.
Joints and surfaces we work on
- Shopfront frames
- Window and door perimeters
- Stone and brick facade joints
- Coping and flashing joints
- Cladding panel joints
- Perimeter joints where frames meet the structure
How a job runs
Working in a building that stays open takes some planning. The work area is signed and kept contained, keep walkways clear and move on in phases so staff and visitors can carry on around us. Planning a London job such as one in St Pancras starts with access. Send the building rules and access times with your enquiry.
- Access, site rules and timing are settled with the client up front.
- Weather and temperature are checked against the product’s limits.
- We remove the old bead and check the edges are sound.
- Joints are cleaned, primed if required and fitted with backing rod.
- Sealant is gunned in and tooled hard onto both faces.
- We hand over with our 12-month workmanship guarantee.
Preparing the site
- Have the specification and drawings to hand
- Point out any areas we must not close
- Send asbestos survey details if the building is pre-2000
Get a fixed quote
We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, speak to us on 01277 525 020 or email the details over.
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Building owners, agents and FMs in St Pancras
For main contractors, we work as the sealant subcontractor. Programme, specification and site rules come first, and our applicators hold CSCS cards.
Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.
Different surfaces, different methods
Brick and stone facades
Joints in natural stone need care to avoid staining. The specified stone-compatible sealant is what we use, and mask the edges carefully.
Cladding panel joints
Panel joints on cladding and rainscreen systems take movement every day. We use a product rated for the movement and suited to the panel surface, often a low-modulus silicone or hybrid.
Your questions answered
Can you work around term dates at a campus such as University of the Arts London?
Yes. We plan campus work around teaching, exams and residence turnarounds. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
Does your area include sites such as Roman Way Industrial Estate, near St Pancras?
Yes. We cover St Pancras and the area around it, including industrial estates, business parks and retail parks such as Roman Way Industrial Estate. Photos and a short description are enough for a first look.
Do you work in St Pancras?
Yes. We take on work across St Pancras.
Will you just go over the old sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
Is old mastic on our building likely to contain asbestos?
Some older mastics, especially in pre-2000 buildings, can contain asbestos. Check the asbestos register or survey before it is disturbed; if it’s suspected, work stops until it has been tested. We don’t remove asbestos-containing materials.
Can you find out why a window is leaking?
Yes. We look at the perimeter sealant and tell you whether it has failed before quoting. If the water seems to come from a roof, sill or the glazing unit instead, we say so.
Are you insured?
Yes. Mastic Doctor is fully insured, public liability included.
Places near St Pancras
Also in St Pancras
Facade sealing around St Pancras: points for this area
The area within 2 miles of St Pancras holds plenty of hotels. Hotel extensions and refits usually have to fit around bookings, so mastic dates are tight. As part of Greater London, St Pancras is inside the ULEZ, which applies to every van on site. Deliveries are booked and storage is tight, so mastic materials come in as needed.
Further education sites such as Westminster Kingsway College, less than half a mile to the north-west of St Pancras, are extended and refurbished from time to time, with mastic often programmed into the summer break. For a contractor at a hotel such as Greenville Hotel, which lies south-east of St Pancras, the mastic often has to be finished before a reopening date. Hospital estates such as Great Ormond Street Hospital for Children, under half a mile to the south-west of St Pancras, 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.
St Pancras is about 2 miles north-west of London, in Greater London. Businesses, contractors and managing agents in St Pancras can call on us for facade joints, as part of our coverage of Greater London. We work across 764 places in Greater London, from busy centres to rural villages.
We take on facade joints across the NW1W, W1T and N1 postcode area, whatever the building. We cover commercial and managed buildings on Shoe Lane, Long Lane and City Road and the roads nearby. With the A4 and A40 nearby, St Pancras is easy to get to with materials and equipment. If your building is just outside St Pancras, we cover Bloomsbury (1 mile south-west), Kings Cross (1 mile north-west), Holborn (1 mile south-east), Clerkenwell (1 mile east) and Angel (1 mile north-east). Bigger towns within reach include Kensington (4 miles south-west), Walthamstow (6 miles north-east), Hampstead (3 miles north-west), Ruislip (13 miles west), Brompton (3 miles south-west) and Stockwell (4 miles south). St Pancras is one of the busier places in Greater London, and its commercial and public buildings are all within our area.
Near you in St Pancras
In St Pancras, that means premises near Lincoln's Inn Fields, City Academy and Elizabeth Garrett Anderson School and the streets around them. You’ll also find Pilsudski Institute of London (under half a mile south-west) and Calthorpe Arms Public House (less than half a mile south-east). The closest station to St Pancras is London Kings Cross station, about 0.5 miles north-west of the centre. Well-known places in the area include Montfichet's Tower (1.1 miles south-east) and Royal National Throat (under half a mile north). Open spaces near St Pancras include Barnsbury Wood and Ludgate Hill.