Greater London · England

Mastic man in N5

We cover every part of the N5 postcode district, which takes in Highbury, Lower Holloway and Newington Green. Every joint is properly prepared, with a one-year guarantee.

Mastic and sealant across N5

How bathroom resealing works in N5

A reseal only lasts if the joint is properly prepared. Every bit of old silicone comes out, down to the thin film left on the tiles, then the joint is cleaned, degreased and treated for mould. New silicone goes on only when the joint is fully dry. We work on basins & vanity units, shower trays & enclosures and baths, and common reasons people get in touch are black mould in the silicone that won’t clean off and lumpy, uneven sealant from a DIY attempt.

We keep the work tidy and contained to the area we’re working on. Expect the work to take half a day or less for one room, longer when the kitchen is included, and we tell you how long to leave it before we go.

  1. We look at every joint first and check for movement or leaks.
  2. The old silicone is cut out completely, along with the film it leaves on the tiles.
  3. The joint is cleaned, degreased and treated for mould.
  4. When the joint is dry, and a bath has been filled with water, the new silicone goes on.
  5. We tool the bead to a neat finish and give you the cure time, normally around 24 hours.

How we quote

Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.

Why book with us

  • Approved under the ARBOMaster scheme
  • A sealant colour to suit the surroundings
  • A 12-month guarantee on all work
  • 20+ years of sealant experience

How to get a quote

Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job, and we’ll come back to you with a quote.

Near you in Highbury

In Highbury, that means homes and buildings near Christ Church, Highbury Fields and City of London Academy Highbury Grove and the streets around them. Other local landmarks include Musical Theatre Academy (0.5 miles south-west), The Snooty Fox pub (under half a mile south-east) and Highbury Quadrant Primary School (under half a mile north-east). Highbury has its own railway station: Canonbury station. Nearby you will also find Arsenal Football Club Museum (0.6 miles north-west) and Montfichet's Tower (2.7 miles south). Not far away are Gillespie Park and Dartmouth Park Hill.

Bathrooms and kitchens across N5

Across N5, from Highbury, Lower Holloway and Newington Green outwards, we see bathrooms and kitchens of every age. Family bathrooms, rented flats and hotel en suites all need their sealant and grout renewing in time.

London and the South East are among the drier parts of the UK, though outside sealant still needs a dry, clean joint, so work across N5 is planned around the weather.

Highbury: In the older streets around Christ Church, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant. Rented homes near Canonbury station change hands often, and mouldy sealant is one of the first things a new tenant notices, so it’s worth renewing between lets.

Aftercare tips

Looking after new joints is easy, and it makes a real difference:

  • Avoid abrasive pads on the sealant
  • Don’t leave water standing on kitchen joints
  • Keep bottles off the sealant line
  • Keep an eye on the corners, where splits start

Good ventilation does more than any cleaner. Run the extractor fan during and after a shower, so the bead dries out between uses.

A split bead lets water through every time the bath or shower is used. Over time that water reaches floors, walls and ceilings. Early resealing closes the gap before damage is done.

Why act early?

You do not need a new bathroom because the sealant looks bad. Replacing the joint is normally all it takes. If something else is wrong, we will tell you.

Questions to ask before booking

  • What guarantee comes with the work
  • What product goes in the joint
  • How the colour is chosen
  • How long to leave it before use

What sealant work cannot fix

A few problems are outside what sealant work can do:

  • A leaking waste, trap or valve
  • Cracked or missing grout between tiles (that’s regrouting)
  • Damage behind the tiles that needs a tiler

Common problems we fix in N5

Older sealant shrinks and hardens. In kitchens it often shrinks away from the back edge, opening a hairline gap that lets water and crumbs in. Heat from the hob and strong sprays speed it along.

These are the problems we’re asked about most:

  • Leaking joints on a shower screen
  • Black spots spreading through the bead
  • Cracked, shrunken or lifting silicone
  • Water getting behind the bath panel

How we quote for bathroom resealing

We quote each job individually. These are the things that affect it:

  • The size of the job
  • Any mould that needs treating
  • The old material and how stubborn it is
  • How many rooms, windows or areas are involved

What you pay reflects the work, not a rough estimate. That’s why we ask about the job first and agree the price before starting.

Helping us quote

What to tell us when you ask for a quote:

  • The problem you’ve noticed
  • Access, such as stairs, a lift or height
  • Whether it’s a home or a business
  • Where the property is

For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we will explain what’s involved before giving you a price.

N5: your questions answered

Do you work for landlords and businesses?

Yes, we do. We work in homes, commercial premises and hotels, and we are fully insured.

Do I have to be there?

We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.

Can you get rid of the black mould in my sealant?

Yes, we can. The old sealant comes out, the mould is treated, and we reseal with anti-fungal sanitary silicone.

How do I get a quote for bathroom resealing in N5?

Size, access and the old material all affect the cost. Call for a quick quote.

Can I add another job to the visit?

Of course. Combining jobs makes good use of the visit.

Do you work in N5?

Yes. We are based in Crawley and work across South East England, London and Scotland, and that includes N5.

Can you reseal around my kitchen sink and worktop?

Yes. The old sealant is cut out and the joint degreased, because cooking grease stops silicone sticking, then a colour-matched bead is laid.

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