Greater London · England

Commercial Sealant in Selsdon

Sealant work for offices, hotels, washrooms and commercial buildings for homeowners, landlords and businesses in Selsdon. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.

  • Leaks from showers into rooms or ceilings below
  • Failed floor-level joints in accessible wet rooms
  • Worktop sealant that has shrunk and stained

Book commercial sealant in Selsdon

Why deal with it now?

First impressions are often made in the washroom. Mouldy silicone looks unhygienic, however hard housekeeping work, and cleaning rarely puts it right. New sealant does. Converted houses in London often have a bathroom above someone else’s living room, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler for homes in Selsdon.

The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and give you a clear price before we start.

Why Selsdon clients choose us

  • Sanitary silicone with an anti-fungal additive in wet areas
  • Full insurance on every job
  • 12-month guarantee on every job
  • Rated 4.9 stars on Google

See our cost guide or our reviews.

About our commercial sealant in Selsdon

Landlords and agents with several properties can have bathrooms and kitchens resealed between tenancies. Several addresses can go on one quote. If you are dealing with sealant failing again soon after quick repairs and whole floors of tired en suites, we can help, on student & care accommodation, office washrooms & kitchens and welfare facilities alike. Some people call us the mastic man, others the silicone man or the sealant specialist; in Selsdon, the job is the same: old material out, joints prepared and the right product used.

In London, a commercial job often starts with access: loading bays, building rules and lifts. For a building in Selsdon, we agree timings and access before anything starts, and room-by-room programmes can be planned where needed.

The work is covered for a year after we finish. If anything is not right with it, phone 07833 053749 or email us.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Where
Selsdon (CR2, CR0)
Region
Greater London
Cover
One year on every job
Price
Quoted before any work starts
Call
07833 053749
Last updated
26 October 2026

Commercial sealant in Selsdon: 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. Commercial buildings in London often have strict access rules and limited loading, and out-of-hours working is possible to arrange.

As a London address, Selsdon can be tricky for parking: let us know about parking bays, permits or a driveway. For site and facilities teams at buildings such as Selsdon Primary and Nursery School, sealant in washrooms, kitchens and changing areas can be renewed around term times or opening hours.

Selsdon is about 2 miles south-east of Croydon, in Greater London. Whether you are in the middle of Selsdon or further out, commercial sealant is available for homes and businesses alike, from flats and houses to offices and hotels. Our Greater London coverage runs to 786 places, Selsdon among them.

Our applicators cover all of CR2 and CR0 for commercial sealant and the streets around it. Whether your property is on York Road, Byron Road and Abbey Road or a nearby road, our applicators can take on the job. Other places close to Selsdon include Forestdale (1 mile east), Addington (1 mile north-east), Sanderstead (1 mile south-west), Coombe (1 mile north-west) and Farleigh (2 miles south-east). Within a short drive, we also cover London (11 miles north), City of Westminster (12 miles north), Marylebone (13 miles north), Kensington (12 miles north-west), St Pancras (13 miles north) and Shoreditch (13 miles north).

Around Selsdon

Locally, jobs take us to homes and businesses close to Royal Russell School, The Sir Julian Huxley pub and The Quest Academy and the streets around them. The nearest railway station is Sanderstead station, about 1.7 miles west. A little further out are St George's Walk (2.7 miles north-west) and Croydon Airport Visitor Centre (2.9 miles west). For a walk, there’s Duppas Hill and Bramley Bank.

Map of Selsdon © OpenStreetMap contributors

What we can’t put right

In fairness, some problems need a different trade:

  • Water damage behind the tiles that needs a tiler or builder
  • Cracked trays or baths rather than failed joints
  • Fire risk assessments or certification

If in doubt, call 07833 053749 or email us and we’ll say what we think before you book.

Joints and surfaces we work on

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

Aftercare tips

To keep the joints looking good and working properly:

  • Plan resealing around quiet periods
  • Put a squeegee in each shower
  • Report broken fans quickly
  • Act on lifting sealant before it leaks

Extract fans need to work. In internal bathrooms, a weak or broken fan lets moisture linger, and mould comes back faster without it.

A room that cannot be let or used is lost income. Small sealant faults caught early can be fixed between bookings or tenancies, instead of turning into a leak that closes the room.

How it works

On the day, we start by going over the job with you, so you know exactly what we’re doing. Surfaces next to the work are protected before any work starts. Most jobs take a morning for a small washroom, and a planned programme for bigger sites. In a London area like Selsdon, the main things to plan are parking and access: let us know about parking, the floor we’ll be working on and any lift or shared entrance.

  1. We walk the site with you and agree the rooms, the order and the hours.
  2. Each area is protected and the old sealant cut out completely.
  3. We clean the joints, treat any mould and let them dry.
  4. New sealant suited to each area is applied and tooled.
  5. We check every room and give its cure time for housekeeping.

Getting ready for the visit

  • Mention if the joints have been sealed before
  • Let us know about parking restrictions
  • Keep children and pets away from the work area

Ask for a quote

Every job is quoted individually, so the first step is telling us about yours. Just ring 07833 053749 or drop us an email with the details, and photos are welcome.

Get a quick quote

Related advice

Your questions about commercial sealant in Selsdon

Is Selsdon in your area for commercial sealant?

Yes, Selsdon is within the area we cover. Our work covers London and the South East. Just call 07833 053749 or email us with a few details of the job.

I let a flat near Sanderstead station. Can you help?

Yes. We work for landlords and agents as well as homeowners. You can ring 07833 053749 or send us an email with the details for a clear quote.

Where are you based?

Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.

How long do rooms need to be out of use?

Around 24 hours is typical for sanitary silicone. We tell your team the cure time for every area.

Can you take on a whole building?

Yes. After a site walk, we agree the scope and sequence, and you get one clear quote.

Is it worth trying it myself?

It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.

Do you provide RAMS?

We’re fully insured, and we will go through your site’s requirements with you. We’ll confirm what we can supply when we quote.

Will it make a mess?

Not at all. The area is protected while we work and cleaned up afterwards.

DIY versus a professional finish

Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.

Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.

Signs you need commercial sealant in Selsdon

Wet rooms and accessible showers are designed for the whole floor to get wet, so the joints at floor level are under water often. Any split there can let water through quickly.

The most common problems we see are:

  • Worktop sealant that has shrunk and stained
  • Leaking joints in shower rooms and changing areas
  • Repeated reseals that do not last
  • Tired sealant in let properties

Community buildings like St Francis are part of the picture too: any kitchen and washrooms need the same sealant care as any other building.

Comparing quotes

  • What the quote includes, VAT included or not
  • Whether they’re fully insured
  • What the cure time is
  • Is the old sealant removed completely?

Choosing a sealant specialist

Work for landlords, hotels and businesses

If you manage several properties in or around Selsdon, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.

Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job
WhatsApp us