Greater London · England
Commercial & hotel sealant in Blackfriars, Greater London
Sealant work for offices, hotels, washrooms and commercial buildings for homes and businesses in Blackfriars and across Greater London. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Worktop sealant that has shrunk and stained
- Joints that need doing before an inspection or audit
- Too many rooms to reseal without closing the building
DIY versus a professional finish
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
About our commercial sealant in Blackfriars
Office kitchens, staff washrooms and welfare facilities need to be usable every working day. Early starts and out-of-hours work can be arranged to keep disruption down. Each area is handed back with its cure time. Common call-outs are for tired sealant in let properties and large numbers of bathrooms needing the same work, across office washrooms & kitchens, retail & leisure sites and hotel bathrooms.
London blocks of flats carry pipes and cables through walls and floors in their common parts and service risers. In Blackfriars, building managers may need both fire-rated sealant around those openings and new sealant in shared washrooms.
Big or small, you get the same 12-month guarantee in Blackfriars and across Greater London.
- Location
- Blackfriars (SE1, EC1M, EC1N)
- Region
- Greater London
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Towns and villages near Blackfriars
Other services in Blackfriars
Why deal with it now?
Guests and staff judge a building by its bathrooms. Black sealant makes a clean room look dirty, 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 by the time it shows on a wall or ceiling in Blackfriars, the repair is bigger than the sealant job would have been.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first.
What you get with us
- White, clear, grey or another colour, product permitting
- Arbo and Everbuild products
- Anti-fungal sanitary silicone in wet areas
- Every job guaranteed for a year
Take a look at how sealant jobs are priced or what customers say.
Blackfriars questions
Can you help a landlord with a rental near London Blackfriars station?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Do you take on hotel work around Blackfriars?
Yes, we work for hotels as well as homes and businesses. Rooms can be done a few at a time, so the building stays open.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Where is Mr Mastic based?
We work from Crawley. We cover Blackfriars and the rest of Greater London.
Do you guarantee your work?
Yes. Each job is guaranteed for twelve months, wherever you are.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
How do I get a quote for commercial sealant in Blackfriars?
Size, access and the old material all affect the cost. Ask us for a quote.
Commercial sealant in Blackfriars: local notes
London has hard water, which leaves limescale on sealant, grout and taps, and it has to be cleaned off before new sealant goes in. Blackfriars has hotels and guest accommodation in and around it. For hotels, a room-by-room programme keeps most rooms in use while the work goes on.
Blackfriars is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. Letting a property close to London Blackfriars station? Then sealant work can be quoted for a single flat or a whole portfolio.
Blackfriars is about 1 mile north-west of London, in Greater London. If you need commercial sealant in Blackfriars, please call 0345 464 0079 or email us for a quick quote. We cover Greater London from our Crawley base, Blackfriars included. Our Greater London coverage runs to 764 places, and Blackfriars is one of them.
Jobs for commercial sealant in SE1, EC1M and EC1N works the same way as everywhere else we cover. Streets in the area include Oat Lane, Bear Lane and Shoe Lane, and we cover them all. Blackfriars is on the A4 and A40, which makes it straightforward to reach with everything needed for commercial sealant. Other places close to Blackfriars include Temple (1 mile west), Temple Bar (1 mile west), Bankside (1 mile south-east), Smithfield (1 mile north) and Clare Market (1 mile west). We also work in nearby towns such as Kensington (4 miles west), Walthamstow (6 miles north-east), Hampstead (4 miles north-west), Ruislip (14 miles west), Brompton (3 miles south-west) and Stockwell (3 miles south).
Around Blackfriars
Typical jobs here are in homes near Barts Health Archives, St Mary-at-Hill and St Alban's Church of England Primary School and the streets around them. You will also find Bernie Spain Gardens (under half a mile south-west), London Nautical School (0.5 miles south-west) and The Black Friar pub (under half a mile south-east). Blackfriars has its own railway station: London Blackfriars station. A little further out are Montfichet's Tower (under half a mile north-east) and St Brides Crypt Museum (within half a mile north-west). The countryside around Blackfriars includes Barnsbury Wood and St. James's Park Lake.
How we quote for commercial sealant
For a quick quote, just ask. What matters most is:
- How much old sealant there is and how hard it is to remove
- Mould in or behind the old joints
- The size of the job
- Working hours on commercial sites
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
What to tell us for a quote
To help us quote quickly, let us know:
- How many joints, rooms or windows are involved
- How we’d reach the joints
- What’s wrong with the joints now
- The type of property
There’s no standard price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To get started, ring 0345 464 0079 or send us an email.
Work for landlords, hotels and businesses
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
What we are called out for in Blackfriars
Quick fixes come back quickly. New silicone over old, joints that weren’t dried, or an unsuitable product means the joint fails again soon.
If you can see any of these, it’s time to have the joints looked at:
- Black, stained silicone in guest bathrooms
- Leaking joints in shower rooms and changing areas
- Too many rooms to reseal without closing the building
- Tired sealant ahead of a health and safety audit
Managing a site like Mercers' School? Then sealant in washrooms, kitchens and changing areas can be renewed around term times or opening hours.
What your quote should include
- What happens if the job turns out different
- What the cure time is
- What insurance they hold
- What the quote includes, VAT included or not
The process
At the end, we look at the finished work together and tell you how long to leave it. The visit itself normally takes a morning for a small washroom, and a planned programme for bigger sites, depending on the amount of work. For a job in Blackfriars, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- The first visit is a look round the site to agree the scope.
- Working hours are agreed, including early starts or out-of-hours work where it can be arranged.
- Areas are protected and the failed sealant removed.
- Once dry, every joint is resealed and tooled.
- We let your team know the cure time for every area.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Keep pets and children clear of the area while we work
- Move anything stored near the joints
How to get a quote
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll come back to you with a quote.
Advice
Aftercare tips
Aftercare is simple, and it makes a real difference:
- Use mild cleaners on sealant, not bleach or abrasives
- Plan resealing around quiet periods
- Keep extractor fans working and serviced
- Note the date each area was done
Each room is handed back with its cure time, which is generally around 24 hours. Make sure housekeeping or cleaning staff know it so nobody showers or cleans the joint too early.
It’s easier to plan a programme than to react to failures. Rooms can be scheduled around occupancy and staff, rather than closed at short notice.