Greater London · England
Commercial Sealant in South Croydon
We cover South Croydon for sealant work for offices, hotels, washrooms and commercial buildings. Old sealant removed completely, joints prepared properly.
- Split sealant around staff kitchen worktops and sinks
- Silicone laid over old silicone by a previous contractor
- Mouldy bathrooms flagged at a tenancy check
How the job changes by surface
Office washrooms & kitchens
Kitchen and tea point joints are degreased and resealed, using a food-safe sealant by sinks where it’s needed.
Hotel bathrooms
In a hotel, every bathroom is used and cleaned daily, so we use anti-fungal sanitary silicone and finish joints smooth for easy cleaning.
Commercial sealant in South Croydon
In a hotel, office or washroom, failed sealant is more than an eyesore. Cleaners struggle with it, water gets through it and people notice it. Our applicators renew sealant across washrooms, welfare areas, kitchens and guest bathrooms. If you have joints that need doing before an inspection or audit and whole floors of tired en suites, we can help, on rental portfolios, hotel bathrooms and welfare facilities alike.
London blocks of flats carry pipes and cables through walls and floors in their common parts and service risers. For managing agents and building owners in South Croydon, that can mean fire-rated sealant around service openings as well as resealing in shared washrooms and kitchens.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- South Croydon (CR2, CR8, CR0)
- Region
- Greater London
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How the visit works
When we arrive, we look over the joints with you first, so you know exactly what we’re doing. We protect the surfaces around the joints before we start. The work normally takes a few hours for a single washroom, longer for a whole building. In a London area like South Croydon, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We start by looking at the rooms and agreeing what’s needed.
- We agree when we’ll work, with early or out-of-hours slots where they can be arranged.
- Each area is protected and stripped of old sealant.
- Joints are dried, then resealed and tooled neatly.
- We let your team know the cure time for every area.
Before we arrive
- Move anything stored near the joints
- Tell us about any water getting in
- Mention if the joints have been sealed before
Getting a quote
Getting a quote is simple: let us know the job and the location and its rough size. Photos by email help us understand the job, and we will take it from there.
Related advice
What we can’t put right
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Tiles coming off the wall
- A broken extractor fan behind the mould problem
- Assessing what fire stopping a building needs
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Joints and surfaces we work on
- Hotel bathrooms
- Welfare facilities
- Rental portfolios
- Retail & leisure sites
- Office washrooms & kitchens
- Student & care accommodation
FAQs for South Croydon
Do you take on hotel work around South Croydon?
Yes, we work for hotels as well as homes and businesses. A room-by-room programme keeps most rooms in use while the work goes on.
Is parking a problem for a job in South Croydon?
Parking in South Croydon, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Can you send RAMS and insurance details for our site?
Let us know your site’s requirements. We’ll confirm what we can provide alongside the quote.
How long do rooms need to be out of use?
Usually after around 24 hours. We give a cure time for each area.
Can I do 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.
Can you seal over the old sealant?
No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover South Croydon, along with the rest of our area.
Will it make a mess?
We keep the work tidy. Nearby surfaces are protected.
Also near South Croydon
Other services in South Croydon
What affects the cost of commercial sealant
There’s no set price list. The quote depends on:
- How many areas need sealing
- The size of the job
- Any mould that needs treating
- How easy the joints are to reach
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, ring 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Asking for a quote
Photos by email are helpful but not essential. Try to tell us:
- Where the job is, and your postcode
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
- The rough size of the job
Want a quote for commercial sealant? Please phone 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and give you a clear price before work begins.
Why deal with it now?
Fixing rooms one complaint at a time is the slow way. A planned programme works through every room, keeping disruption down and costs clear. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in South Croydon, the repair is bigger than a sealant job.
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will send you a clear quote for the lot.
What you get with us
- Trusted Arbo and Everbuild sealants
- Anti-fungal sanitary silicone in wet areas
- Experience in homes, commercial sites and hotels
- An ARBOMaster approved applicator
Take a look at our cost guide and customer reviews.
Signs you need commercial sealant in South Croydon
A rushed reseal between guests rarely lasts. New silicone over old, joints that weren’t dried, or an unsuitable product means the joint fails again soon.
Signs it’s time to call us include:
- Leaking joints in shower rooms and changing areas
- Water marks on ceilings under bathrooms
- Tired sealant ahead of a health and safety audit
- Whole floors of tired en suites
As a London address, South Croydon can be tricky for parking: let us know about parking bays, permits or a driveway.
Questions to ask before booking
- What preparation is included
- Is the old sealant removed completely?
- Is VAT in the price?
- What happens if they find a problem under the old sealant
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
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.
Commercial buildings in South Croydon
There are hotels and other places to stay in and around South Croydon. For hotels, a room-by-room programme keeps most rooms in use while the work goes on. London has hard water, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
Letting a property close to Sanderstead station? Then sealant work can be quoted for a single flat or a whole portfolio. For buildings such as Church of St Augustine, halls and community kitchens see heavy use, and their sealant shows it.
South Croydon is about 1 mile south of Croydon, in Greater London. Whether you’re in the middle of South Croydon or further out, commercial sealant is available for homes and businesses alike, from flats and houses to offices and hotels. Across Greater London, we cover 764 places, and South Croydon is one of them. You can also see our page for London, about 10 miles away.
We work across CR2, CR8 and CR0 for commercial sealant. We cover properties on Edgar Road, Bynes Road and Grange Road and the roads around them. Other places close to South Croydon include Croydon (1 mile north), Coombe (1 mile north-east), Sanderstead (1 mile south-east), Riddlesdown (2 miles south) and Selsdon (2 miles east). Within a short drive, we also cover London (10 miles north), City of Westminster (11 miles north), Marylebone (12 miles north), Kensington (11 miles north-west), St Pancras (12 miles north) and Shoreditch (12 miles north).
Around South Croydon
In South Croydon, that means homes and buildings near The Purley Arms, Harris Academy Purley and Duppas Hill, among other places. South Croydon has its own railway station: Sanderstead station. Nearby you’ll also find Purley War Memorial Hospital (1.2 miles south-west) and Croydon Airport Visitor Centre (1 mile west). Not far away are Roundshaw Downs and Duppas Hill.