Greater London · England

Commercial Sealant in Northfields

We cover Northfields for sealant work for offices, hotels, washrooms and commercial buildings. Old sealant removed completely, joints prepared properly and a 12-month guarantee.

  • Sealant failing again soon after quick repairs
  • Mouldy washroom sealant that staff and guests notice
  • Worktop sealant that has shrunk and stained

Trusted commercial sealant in Northfields

Signs you need commercial sealant in Northfields

Commercial buildings settle and move with temperature, and stud walls move more than solid ones. The sealant between walls, trays and fittings absorbs that strain and eventually tear.

The most common problems we see are:

  • Shower leaks reaching the floor below
  • Failed floor-level joints in accessible wet rooms
  • Washrooms that need sorting before an inspection
  • Failed joints in office kitchens and tea points

Managing a site like Mount Carmel Catholic Primary School? Then busy washrooms and kitchens can be resealed in phases so they stay open.

Before you book anyone

  • What happens if the job turns out different
  • What preparation is included
  • What insurance they hold
  • What the cure time is

How to choose a mastic man

Commercial sealant in Northfields

Wet areas get anti-fungal sanitary silicone, and kitchens get a food-safe product where it’s needed. We use sealants from Arbo and Everbuild, applied by ARBOMaster approved applicators. If you have silicone laid over old silicone by a previous contractor and mouldy washroom sealant that staff and guests notice, we can put it right, on rental portfolios, student & care accommodation and retail & leisure sites alike.

In London, a commercial job often starts with access: loading bays, building rules and lifts. For a building in Northfields, we agree timings and access before anything starts.

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

Where
Northfields (W5, W13, TW8)
Wider area
Greater London
Cover
One year on every job
Quotes
A clear quote up front
Call
0345 464 0079
Updated
26 October 2026
Eleven members of the Mr Mastic team standing in front of branded white vans

How the job changes by surface

Welfare facilities

Shower rooms in welfare blocks get heavy use and need sound joints. We reseal with anti-fungal sanitary silicone, including accessible wet rooms.

Hotel bathrooms

Hotel showers and baths get used and cleaned every day, so joints are finished smooth and sealed with anti-fungal sanitary silicone.

Why act early in Northfields

Refitting a washroom is a big, disruptive project. If the fittings are in good order, new sealant is often all it needs. We’ll tell you if we find anything that needs another trade. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler.

Leaving a failed joint usually makes the job bigger, not smaller. If you are unsure, phone 0345 464 0079 or drop us an email and we will give you an honest view and a quote.

Why book with us

  • Old sealant always removed completely
  • Rated 4.9 stars on Google
  • We agree the colour with you first
  • 20+ years of sealant experience

See what affects the cost or customer reviews.

Quotes for commercial sealant in Northfields

Your quote is based on your job. We look at:

  • How easy the joints are to reach
  • Whether old sealant or filler has to be cut out
  • When we can work, for business premises
  • The size of the job

Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.

Asking for a quote

What to tell us when you ask for a quote:

  • The address or postcode of the job
  • The rough size of the job
  • Any access issues, like height or stairs
  • If someone has resealed it before

There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, phone 0345 464 0079 or send us an email.

Commercial buildings in Northfields

Many London buildings have tight access and loading restrictions, so out-of-hours working can be arranged where needed. There are hotels and other places to stay in and around Northfields. For hotels, a room-by-room programme keeps most rooms in use while the work goes on.

As a London address, Northfields can be tricky for parking: let us know about parking bays, permits or a driveway. For landlords with property near Brentford station, sealant work can be quoted for a single flat or a whole portfolio.

Northfields is about 1 mile south of Ealing, in Greater London. Anywhere in W5, we can carry out commercial sealant at your property. 764 places in Greater London are on our list. There’s also a page for London, roughly 9 miles from Northfields.

Every address in W5, W13 and TW8 is covered for commercial sealant, from the main roads to the quietest streets. That includes homes and businesses on Burns Road, South Road and Elers Road. Being close to the A3002, Northfields is simple for us to get to. If you’re just outside Northfields, we cover Brentford (1 mile south-east), Gillette Corner (1 mile south-west), Brentford End (1 mile south), Osterley (2 miles south-west) and Spring Grove (2 miles south-west). Larger places within reach include London (9 miles east), City of Westminster (7 miles east), Marylebone (7 miles east), Kensington (5 miles east), St Pancras (9 miles east) and Shoreditch (10 miles east).

Landmarks near Northfields

Typical jobs here are in homes near Ealing Fields High School, Great Ealing School and Ealing Park Tavern. Also close by are Library for Iranian Studies (1.8 miles east) and Lammas Park (within half a mile north). Northfields’s nearest station is Brentford station, roughly 0.8 miles south of the centre. A little further out are Gunnersbury Park House - Large Mansion (1.2 miles east) and Treaty Centre (3 miles south-west). Open spaces near Northfields include Middle Lake and Long Wood.

Map of Northfields © OpenStreetMap contributors

Aftercare tips

After the cure time, these simple habits help:

  • Add sealant to your planned maintenance checks
  • Note the date each area was done
  • Leave squeegees in busy showers
  • Book larger programmes for quieter times of year

Daily cleaning with harsh chemicals shortens the life of any sealant. Ask cleaners to use mild products and soft cloths on the sealant.

Rooms out of use cost a hotel or landlord money. Catching faults early means they can be put right in a short window, instead of turning into a leak that closes the room.

How the visit works

At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for a single washroom, longer for a whole building, depending on the size of the job. For a job in Northfields, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.

  1. We agree a programme with you: which rooms, in what order, at what times.
  2. We go through your site’s paperwork needs, such as RAMS, before work begins.
  3. Old sealant is cut out room by room and joints cleaned and treated.
  4. Anti-fungal sanitary silicone goes into wet areas, with suitable sealant elsewhere.
  5. Each finished area is checked with you and given a cure time.

Getting ready for the visit

  • Move anything stored near the joints
  • Let us know about stairs, lifts or work at height
  • Mention any parking rules near the property

Ask for a quote

A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.

Get a quick quote

Read more

Should I try it myself first?

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.

Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.

Your questions about commercial sealant in Northfields

Can you help a landlord with a rental near Brentford station?

Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear price.

Do you take on hotel work around Northfields?

Yes, hotels and guest houses are among the places we work. A room-by-room programme keeps most rooms in use while the work goes on.

Do you come to Northfields?

Yes. We work in Northfields and the rest of Greater London. For a quote, call 0345 464 0079 or send us an email.

Do you hold any approvals?

Yes. Mr Mastic is an ARBOMaster approved applicator.

Is it worth trying it myself?

You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.

Is there any odour?

Possibly a little. It fades as the sealant cures.

Is out-of-hours working possible?

Often, yes. Tell us your opening hours and quiet times, and we’ll plan the work around them.

Do you offer different sealant colours?

Usually, yes. Sealants come in white, clear, grey and other colours, and we will agree it with you first.

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