Greater London · England

Herne Hill Commercial Sealant

Sealant work for offices, hotels, washrooms and commercial buildings for Herne Hill, backed by a one-year guarantee. Call for a quick quote.

  • Leaks from showers into rooms or ceilings below
  • Leaking joints in shower rooms and changing areas
  • Silicone laid over old silicone by a previous contractor

Need commercial sealant in Herne Hill?

When it is not the sealant

A few problems are outside what sealant work can do:

  • Leaking pipework, valves or wastes (a plumber’s job)
  • Certifying fire stopping or building compliance
  • Damaged sanitaryware that needs replacing

Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly before you book.

What we seal

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

Commercial sealant in Herne Hill, done properly

Office kitchens, staff washrooms and welfare facilities need to be usable every working day. Early starts and out-of-hours work can be arranged so the working day is disturbed as little as possible. You are told when each area can be used again. We work on rental portfolios, retail & leisure sites and office washrooms & kitchens, and common reasons people get in touch are split sealant around staff kitchen worktops and sinks and black, stained silicone in guest bathrooms.

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 Herne Hill, that can mean fire-rated sealant around service openings as well as resealing in shared washrooms and kitchens.

All our work is covered by our one-year guarantee.

Where
Herne Hill (SE22, SW2, SE24)
Wider area
Greater London
Guarantee
12 months on all our work
Quote
A clear price before any work starts
Call
0345 464 0079
Last updated
26 October 2026
Mr Mastic applicator sealing the vertical joint between a glass shower screen and tiled wall

DIY sealant or a professional job?

If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.

Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.

Leave it or put it right?

Refitting a washroom is a big, disruptive project. If the fittings are in good order, new sealant is often all it needs. If something else is wrong, we will say so. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Herne Hill, the repair is bigger than a sealant job.

What it costs depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before we start, so you know where you stand.

Why us?

  • Approved under the ARBOMaster scheme
  • Colour picked to suit the job
  • 180+ five-star Google reviews
  • A choice of colours where the product allows

See what affects the cost and our reviews.

Herne Hill: your questions answered

Can parking be tricky for a visit in Herne Hill?

Parking in Herne Hill, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.

Do you work for landlords with property near North Dulwich station?

Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.

Can you seal over the old sealant?

No, and we never do. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.

How soon can a room be used after resealing?

Most areas can be used after around 24 hours. We give a cure time for each area.

Can you work around guests in a hotel?

Yes. The order and timing are agreed with your team, and you’ll know when each room can be used.

Do you guarantee commercial jobs?

Yes, with our 12-month guarantee. Mild cleaning and good ventilation help it last.

How long does the job take?

As a guide, most jobs take a few hours per area, with larger sites planned over several visits. Bigger jobs take longer, and we will say how long yours will take.

How much does commercial sealant cost in Herne Hill?

We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before work begins.

Looking after it afterwards

Once the sealant has cured, a few habits help it last:

  • Keep a record of which rooms were resealed and when
  • Add sealant to your planned maintenance checks
  • Tell cleaning staff when each room can be used
  • Schedule work around occupancy

Add sealant checks to your planned maintenance. Checking joints alongside other room checks catches failures before they leak.

Watch for the warning signs: mould, splits, peeling corners or water marks downstairs. Any of these means the joints need attention.

How it works

Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. It normally takes a few hours for a single washroom, longer for a whole building. In a London area like Herne Hill, 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.

  1. The first visit is a look round the site to agree the scope.
  2. We agree when we will work, with early or out-of-hours slots where they can be arranged.
  3. Each area is protected and stripped of old sealant.
  4. Once dry, every joint is resealed and tooled.
  5. We let your team know the cure time for every area.

Getting ready for the visit

  • Mention any sign-in or site rules at work premises
  • Tell us if parking is tricky
  • Let us know about earlier repairs to the joints

How to get a quote

Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.

Get a price

Advice

What affects the cost of commercial sealant

The price is agreed before any work begins. It takes into account:

  • Mould in or behind the old joints
  • Whether old sealant or filler has to be cut out
  • The number of rooms or windows
  • Any working-time requirements on site

What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first.

Helping us quote

A few details help us give you an accurate quote. When you ask for a quote, tell us:

  • The address or postcode of the job
  • Access, such as stairs, a lift or height
  • Photos by email, if that is easy
  • What the problem is, such as mould, gaps, leaks or cracking

Every job is quoted individually, so the first step is telling us about yours. Simply ring 0345 464 0079 or email us and describe the job.

What commercial sealant looks like in Herne Hill

There are hotels and other places to stay in and around Herne Hill. Hotel work can be planned room by room, with out-of-hours working where needed. Many London buildings have tight access and loading restrictions, so out-of-hours working can be arranged where needed.

Schools such as Judith Kerr Primary School are buildings too, and washroom and kitchen sealant can be programmed around term times or opening hours. Letting a property close to North Dulwich station? Then several rental properties can be resealed on one programme. For buildings such as Saint Faith's, halls and community kitchens see heavy use, and their sealant shows it.

Herne Hill is about 3 miles south of London, in Greater London. Jobs in Herne Hill get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Across Greater London, we cover 764 places, Herne Hill among them.

All of SE22, SW2 and SE24 is within our area for commercial sealant, from the main roads to the quietest streets. You’ll find streets such as Jelf Road, Dewey Lane and Talma Road. Being close to the A204 and A2214, Herne Hill is easy for our applicators to reach for commercial sealant. If you are just outside Herne Hill, we cover Dulwich Village (1 mile south-east), East Dulwich (1 mile north-east), Dulwich (1 mile south-east), Denmark Hill (1 mile north) and Camberwell (1 mile north). Further out, we also cover London (3 miles north), City of Westminster (5 miles north-west), Marylebone (5 miles north-west), Kensington (6 miles north-west), St Pancras (5 miles north) and Shoreditch (5 miles north).

Near you in Herne Hill

In Herne Hill, that means homes and buildings near The Charter School, Half Moon pub and Belair Park, among other places. Herne Hill has its own railway station: North Dulwich station. A little further out are Surrey Quays Shopping Centre (3.5 miles north-east) and House of Dreams Museum (0.7 miles north-east). Open spaces near Herne Hill include Battersea Park Lake and Knight's Hill.

Map of Herne Hill © OpenStreetMap contributors

Landlord and commercial work in Herne Hill

Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.

From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.

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