Greater London · England
Commercial Sealant in Smithfield
Commercial sealant in Smithfield from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Rental bathrooms that need resealing between tenants
- Whole floors of tired en suites
- Joints that need doing before an inspection or audit
Commercial sealant for homes and businesses in Smithfield
Mr Mastic brings more than 20 years’ experience to commercial sites, and we’re fully insured and ARBOMaster approved. If your site needs RAMS or insurance details, tell us, and we’ll confirm what we can supply with the quote. Common call-outs are for sealant failing again soon after quick repairs and tired sealant in let properties, across retail & leisure sites, welfare facilities and office washrooms & kitchens.
Commercial work in London comes with its own logistics: loading restrictions, building rules and tight access. Timings and access are agreed with the building before work starts in Smithfield, and room-by-room programmes can be planned where needed.
You get a 12-month guarantee, the same in Smithfield as everywhere else we work.
- Location
- Smithfield (EC1V, EC1P, EC1R)
- Wider area
- Greater London
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
When it is not the sealant
Before booking, it’s worth knowing the limits:
- A broken extractor fan behind the mould problem
- Assessing what fire stopping a building needs
- Leaking pipework, valves or wastes (a plumber’s job)
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
What we seal
- Welfare facilities
- Rental portfolios
- Office washrooms & kitchens
- Student & care accommodation
- Retail & leisure sites
- Hotel bathrooms
Aftercare tips
Aftercare is simple, and it makes a real difference:
- Put a squeegee in each shower
- Book larger programmes for quieter times of year
- Keep strong chemicals and scourers off the joints
- Note the date each area was done
Ask staff to report splits or lifting sealant early. Catching one split early can save a leak later.
Water from a failed shower seal can travel: into ceilings below, walls next door and service voids. Early resealing keeps it from getting that far.
Common questions in Smithfield
Do you take on hotel work around Smithfield?
Yes, hospitality work, including hotels, is part of what we do. Work can be planned room by room, and out-of-hours working can be arranged.
Is parking an issue for commercial sealant in Smithfield?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we’ll tell you what we’re using.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Can I choose the sealant colour?
In most cases you can choose. We will explain which colours are available.
Do you work for letting agents and landlords?
Yes. For several properties, we can plan the work as one programme.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Where are you based?
Our base is Crawley. We work across South East England, London and Scotland.
Leave it or put it right?
In a building with rooms above rooms, a failed shower seal can soon show on a ceiling below. That means a second room out of use and a repair to pay for. A reseal now avoids that. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
What it costs depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
Why Smithfield clients choose us
- 20+ years of sealant experience
- Domestic, commercial and hotel work
- Tidy, careful work
- White, clear, grey or another colour, product permitting
Read what affects the cost or our reviews.
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
We also work for property managers and facilities teams in Smithfield and across Greater London. We can quote a run of properties together.
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
How the visit works
At the end, we look at the finished work together. The work normally takes a few hours per area, with larger sites planned over several visits, depending on the size of the job. For a job in Smithfield, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- 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.
- Each area is protected and stripped of old sealant.
- Joints are dried, then resealed and tooled neatly.
- Housekeeping or site staff are told when each area can be used.
Preparing for the visit
- Move anything stored near the joints
- Mention if the joints have been sealed before
- Mention any sign-in or site rules at work premises
Getting a quote
For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Advice
Towns and villages near Smithfield
More services for Smithfield
What commercial sealant looks like in Smithfield
Commercial buildings in London often have strict access rules and limited loading, and out-of-hours working is possible to arrange. There are hotels and other places to stay in and around Smithfield. For hotels, a room-by-room programme keeps most rooms in use while the work goes on.
For landlords with property near Farringdon station, we can quote for one property or a whole portfolio of rentals. For site and facilities teams at buildings such as Charterhouse Square School, sealant in washrooms, kitchens and changing areas can be renewed around term times or opening hours. Smithfield is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Smithfield is about 1 mile north of London, in Greater London. If you need commercial sealant in Smithfield, please ring 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Greater London. 764 places in Greater London are on our list.
Our applicators cover all of the EC1V, EC1P and EC1R postcode area for commercial sealant. Local streets include Oat Lane, Shoe Lane and Long Lane, and we cover them all. You will find Smithfield on the A1 and A4, so it’s easy for us to get to with everything needed for commercial sealant. We also cover the places around Smithfield: Farringdon (1 mile north), Blackfriars (1 mile south), Holborn (1 mile west), Temple Bar (1 mile south-west) and Clerkenwell (1 mile north). Within a short drive, we also cover 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 (4 miles south).
Landmarks near Smithfield
In Smithfield, that means homes and buildings near London Nautical School, Barts Health Archives and St Alban's Church of England Primary School. Other local landmarks include St Mary-at-Hill (1 mile south-east), Oriole pub (within half a mile south-west) and Postman's Park (within half a mile south-east). Smithfield has its own railway station: Farringdon station. Nearby you will also find Montfichet's Tower (within half a mile south) and Postal Museum (less than half a mile south-east). Not far away are Ludgate Hill and St. James's Park Lake.
What affects the cost of commercial sealant
Every job gets its own quote. These are the things that affect it:
- Which sealant suits the joint
- How easy the joints are to reach
- The number and length of the joints
- Working hours on commercial sites
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first and give you a clear quote before we start.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Whether it’s a home or a business
- Photos by email, if that is easy
- Where the job is, and your postcode
- What’s wrong with the joints now
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.