Greater London · England

St Pancras Commercial Sealant

Our applicators work in St Pancras on sealant work for offices, hotels, washrooms and commercial buildings. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.

  • Mouldy washroom sealant that staff and guests notice
  • Too many rooms to reseal without closing the building
  • Sealant failing again soon after quick repairs

Trusted commercial sealant in St Pancras

Landlords, agents and businesses in St Pancras

A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.

If you manage several properties in or around St Pancras, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.

Commercial sealant in St Pancras, done properly

Staff facilities cannot be out of action for long. We can plan the work for early mornings or out of hours to keep disruption down. You’re told when each area can be used again. We work on hotel bathrooms, office washrooms & kitchens and rental portfolios, and the jobs we see most are failed joints in office kitchens and tea points and shower leaks reaching the floor below.

In London’s blocks of flats, service risers and common parts have pipes and cables passing through walls and floors. For managing agents and building owners in St Pancras, that can mean fire-rated sealant around service openings as well as resealing in shared washrooms and kitchens.

Whatever the size of the job, it’s backed by our 12-month guarantee in St Pancras and across Greater London.

Where
St Pancras (NW1W, W1T, N1)
Region
Greater London
Cover
One year on every job
Quotes
Quoted before any work starts
Telephone
0345 464 0079
Last updated
26 October 2026
Eleven members of the Mr Mastic team standing in front of branded white vans

What the job involves on each surface

Welfare facilities

Failed sealant in welfare areas is a simple fix before an audit. Tell us your deadline and we’ll plan the work and cure time around it.

Rental portfolios

A sound seal protects the property as well as its appearance.

Your questions about commercial sealant in St Pancras

Do you take on hotel work around St Pancras?

Yes, hotels and guest houses are among the places we work. Rooms can be done a few at a time, so the building stays open.

Do you work for landlords with property near London Kings Cross station?

Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear quote.

Is it worth trying it myself?

Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.

Are you ARBOMaster approved?

Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.

Do you remove the old sealant?

Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.

Can you do several jobs on one visit?

Yes, we can. Several rooms, windows or areas can go on one quote.

Will there be a smell?

There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.

How long do rooms need to be out of use?

Follow the cure time we give you, which is normally around 24 hours. Planning the order of rooms keeps that downtime manageable.

Common problems we fix in St Pancras

Quick fixes come back quickly. New silicone over old, joints that weren’t dried, or an unsuitable product means the joint fails again soon.

Most people get in touch when they notice one of these:

  • Washroom sealant that looks dirty however often it’s cleaned
  • Large numbers of bathrooms needing the same work
  • Leaks from showers into rooms or ceilings below
  • Failed floor-level joints in accessible wet rooms

Letting a property close to London Kings Cross station? Then several rental properties can be resealed on one programme.

What your quote should include

  • What product goes in the joint
  • Who turns up on the day
  • What guarantee comes with the work
  • What happens if the job turns out different

Choosing a sealant specialist

What we cannot put right

Sealant isn’t the answer to every problem, and we’ll tell you before any work starts. Sealant won’t put right:

  • Cracked trays or baths rather than failed joints
  • Extraction that isn’t working, which needs an electrician or ventilation contractor
  • Failed tanking or loose tiles behind the sealant

If you’re not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer.

What we seal

  • Office washrooms & kitchens
  • Retail & leisure sites
  • Rental portfolios
  • Welfare facilities
  • Hotel bathrooms
  • Student & care accommodation

DIY versus a professional finish

A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.

Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.

Why act early in St Pancras

First impressions are often made in the washroom. Mouldy silicone looks unhygienic, however hard housekeeping work, and scrubbing will not fix it. Replacing it does. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in St Pancras, the repair is bigger than a sealant job.

Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.

What you get with us

  • Anti-fungal sanitary silicone in wet areas
  • 180+ five-star Google reviews
  • Approved under the ARBOMaster scheme
  • We leave the area clean and tidy

See what affects the cost and customer reviews.

What happens on the day

At the end, we look at the finished work together and explain the cure time. The work normally takes as long as the scope needs, from one welfare room to a full building, depending on the size of the job. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in St Pancras. It helps if you can point us to a visitor permit or a bay close to the door.

  1. Tell us the rooms, hours and site rules, and we will plan the programme.
  2. We go through your site’s paperwork needs, such as RAMS, before work begins.
  3. Old sealant is cut out room by room and joints cleaned and treated.
  4. Anti-fungal sanitary silicone goes into wet areas, with suitable sealant elsewhere.
  5. Rooms are handed back in order, each with its cure time.

Getting ready for the visit

  • Mention if the joints have been sealed before
  • For indoor joints, keep the area dry beforehand if you can
  • Let us know about stairs, lifts or work at height

How to get a quote

Asking for a quote is easy: tell us what needs doing and where. Photos by email help us understand the job.

Get a price

Related advice

Commercial buildings in St Pancras

Many London buildings have tight access and loading restrictions, so out-of-hours working can be arranged where needed. There are hotels and other places to stay in and around St Pancras. For hotels, a room-by-room programme keeps most rooms in use while the work goes on.

If you look after a church, hall or community building such as Lumen United Reformed Church, any kitchen and washrooms need the same sealant care as any other building. St Pancras is in London, so parking needs planning: let us know about parking bays, permits or a driveway.

St Pancras is about 2 miles north-west of London, in Greater London. Anywhere in NW1W, we cover commercial sealant for homes and businesses. Our area takes in 764 places across Greater London, large and small.

Every address in NW1W, W1T and N1 is within our area for commercial sealant, from the main roads to the quietest streets. That includes homes and businesses on Shoe Lane, Long Lane and City Road. St Pancras sits on or near the A4 and A40. We also cover the places around St Pancras: 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). We also work in nearby towns such as 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). Being one of Greater London’s larger places, St Pancras has homes, rented property and businesses of every kind.

What’s near St Pancras

Typical jobs here are in homes near Lincoln's Inn Fields, City Academy and Elizabeth Garrett Anderson School, among other places. Also close by are Pilsudski Institute of London (under half a mile south-west) and Calthorpe Arms Public House (under half a mile south-east). St Pancras’s nearest station is London Kings Cross station, roughly 0.5 miles north-west. Nearby you’ll also find Montfichet's Tower (1.1 miles south-east) and Royal National Throat (within half a mile north). The countryside around St Pancras includes Barnsbury Wood and Ludgate Hill.

Map of St Pancras © OpenStreetMap contributors
20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job