Medway · England

Lower Upnor Remedial Sealant

We cover Lower Upnor for removing failed, mouldy or leaking sealant and putting it right. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.

  • Floor or wall movement joints that have failed
  • Dark patches showing through the sealant
  • Thick, messy sealant smeared over tiles

Remedial sealant for Lower Upnor homes and businesses

Remedial sealant in Lower Upnor, done properly

If a joint has been resealed and is leaking again, it’s worth a proper look. It helps to have pictures when you call 0345 464 0079 or send us an email, and say how long ago it was last done. We work on mouldy bath & shower sealant, shrunken worktop sealant and failed movement joints, and people most often call us about caulk or the wrong sealant used in a wet area and over-sealed joints coming away.

Homes around Lower Upnor are mostly houses and cottages rather than flats. The work is the same as anywhere: everything old comes out before the new sealant or grout goes in.

All of our work is guaranteed for twelve months.

Where
Lower Upnor (ME2)
Wider area
Medway
Cover
A year, on every job
Quote
A clear quote up front
Phone
0345 464 0079
Last updated
26 October 2026
Mr Mastic applicator smiling as he applies silicone to the corner of a bath

Signs you need remedial sealant in Lower Upnor

Using the wrong product is a common cause: caulk where it gets wet, rigid sealant where things move, or an acetoxy silicone on a surface it can mark. Each fails in its own way.

Any of these means the joints need attention:

  • Wide, uneven beads that look worse than the old ones
  • Beads that never stuck properly
  • Caulk or the wrong sealant used in a wet area
  • Mould trapped under a layer of silicone

Letting a property close to Strood station? Then a joint that keeps failing is best fixed properly while the property is empty.

Comparing quotes

  • How the surfaces are prepared before sealing
  • Is VAT in the price?
  • How the colour is chosen
  • Which sealant they’ll use, and why

How to choose a mastic man

Quotes for remedial sealant in Lower Upnor

The price is agreed before any work begins. It’s based on:

  • The number of rooms or windows
  • Access and height
  • How much old sealant there is and how hard it is to remove
  • The product the joint needs

A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, call 0345 464 0079 or email us for an honest opinion and a quote.

What to tell us for a quote

To help us quote quickly, let us know:

  • Access, such as stairs, a lift or height
  • The rough size of the job
  • If someone has resealed it before
  • The address or postcode of the job

We quote each job on its own, so start by telling us what you need. Just call 0345 464 0079 or drop us an email with the details.

How it works

You do not need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the job takes a few hours for most joints, depending on how much old sealant has to come out in most cases. For a village or hamlet like Lower Upnor, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.

  1. The failure is looked at first, so we know whether it’s sealant, movement or water from elsewhere.
  2. Each layer is cut out and the residue cleaned off.
  3. Mould is treated and the joint dried.
  4. We reseal with a product suited to the joint, backed where needed.
  5. We finish neatly and point out anything that needs another trade.

Before we arrive

  • Let us know about earlier repairs to the joints
  • Clear the area around the work
  • Tell us about access, such as stairs, a lift or high-level joints

How to get a quote

The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.

Ask for a quote

Related advice

Remedial sealant in Lower Upnor: local notes

Lower Upnor is close to the coast. Near the coast, holiday lets and guest houses can see bathrooms used by one guest after another, and sealant and grout that work that hard wear out sooner. Most of the South East has hard water, which leaves limescale on sealant, grout and fittings.

Homes close to St Philip & St James include some older properties, and older homes can move a little, which is hard on rigid grout and tired sealant. If you look after a building such as Chattenden Primary School, we reseal washrooms and kitchens in schools and businesses as well as homes.

Lower Upnor is about 2 miles north-east of Rochester, in Medway. Anywhere in ME2, we can carry out remedial sealant at your property. Across Medway, we cover 68 places, Lower Upnor among them. You can also see our page for Chelmsford, about 23 miles away.

Our applicators cover all of the ME2 postcode area for remedial sealant and the streets around it. Local streets include Galleon Way, Cutter Close and Schooner Walk, all of which we cover. If you’re just outside Lower Upnor, we cover Upper Upnor (1 mile south-west), Chattenden (1 mile north), Wainscott (1 mile west), Hoo St Werburgh (2 miles north-east) and Cooling Street (2 miles north). Further out, we also cover Gillingham (3 miles south-east), Chatham (4 miles south), Rainham (5 miles south-east), Strood (3 miles south-west), Luton (3 miles south) and Park Wood (5 miles south-east).

Around Lower Upnor

In Lower Upnor, that means homes and buildings near Former Ordnance Store At Chatham Gun Wharf, The Hundred of Hoo Academy and Waterfront University Technical College. Nearby too are Lower Lines Park (1.3 miles south-east) and The Ship pub (less than half a mile east). Lower Upnor’s nearest station is Strood station, about 1.6 miles south-west. Other landmarks nearby include Upnor Castle (less than half a mile south) and Pentagon Shopping Centre (1.9 miles south). The countryside around Lower Upnor includes Rede Common and Gad's Hill.

Map of Lower Upnor © OpenStreetMap contributors

Common questions in Lower Upnor

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

Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or email us with the details for a clear quote.

Is Lower Upnor within the area you cover?

Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.

Do you take out the old sealant first?

Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.

Can I choose the sealant colour?

Most of the time, yes. We’ll tell you which colours the right product comes in and agree one before we start.

Can you quote for more than one area?

Yes. Just list everything you need and we will quote it together.

What if resealing will not fix my leak?

Then we explain what we have found. You may need a plumber or bathroom fitter before any new sealant goes on.

Where are you based?

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

What information do you need?

A short description and the location. We will ask anything else we need to know.

Looking after it afterwards

Good habits help new joints last longer. Our tips:

  • Do not add new sealant on top of old
  • Use a soft cloth, not a scourer, on silicone
  • Report a tray that rocks or a worktop that lifts
  • Find out why the sealant failed first

Ventilation keeps mould away from the new bead: use the extractor or open a window after showering.

A failing joint rarely gets better on its own. Each use pushes more water behind the bead, into whatever is behind or below. Early action keeps it to a sealant job.

What the job involves on each surface

Movement & expansion joints

Movement joints in floors, walls and façades need a flexible sealant set to the right depth. We remove the failed sealant, fit backing and reseal.

Windows & doors

A frame that keeps leaking may not be the mastic. If the frame joint isn’t the cause, we’ll say so.

Honest limits

To be straight with you, there are a few things sealant won’t fix:

  • Movement from fittings that aren’t supported
  • Sealant in an older building that needs testing for asbestos first
  • Cracks in the fitting rather than the joint

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

What we seal

  • Expansion joints
  • Botched or over-sealed joints
  • Mouldy bath & shower sealant
  • Shrunken worktop sealant
  • Failed movement joints
  • Leaking tray & enclosure joints

Work for landlords, hotels and businesses

We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.

If you manage several properties in or around Lower Upnor, several properties can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.

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