Medway · England

Gillingham Remedial Sealant

Removing failed, mouldy or leaking sealant and putting it right for homes and businesses in Gillingham and across Medway. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.

  • Repeat leaks from the same joint
  • Over-sealed joints coming away
  • Black mould underneath the bead

Remedial sealant in Gillingham

Gillingham questions

Do you work for landlords with property near Gillingham (Kent) station?

Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.

Can you do remedial sealant in Gillingham?

Yes, Gillingham is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job.

What do you need from me for a quote?

Where the job is, what the problem is and roughly how big it is. Photos by email help too.

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.

Can you reseal a split movement joint?

Yes. Where mortar or filler has been used instead of sealant, it’s removed where it can be, then the joint is sealed properly.

What sealant do you use?

Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We’ll tell you what we’re using and why.

How long does the work take?

The number of joints and layers decides it. We will tell you before any work starts.

How much does remedial sealant cost in Gillingham?

The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote and we’ll talk you through it.

About our remedial sealant in Gillingham

Remedial jobs in Gillingham generally fall into a few patterns: sealant over sealant, mould under the bead, leaks that come back and movement joints that have split. Each is stripped back and done again properly. We work on shrunken worktop sealant, leaking tray & enclosure joints and mouldy bath & shower sealant, and people most often call us about worktop sealant that has shrunk and split and over-sealed joints coming away.

Lots of homes in Gillingham are rented, and bathrooms in rentals work hard. Fresh sealant and clean grout help a property present well between tenants and stop water getting where it shouldn’t.

A one-year guarantee comes with the work, just as it does everywhere we cover.

Where
Gillingham (ME8, ME7, ME4, ME5)
Wider area
Medway
Cover
One year on every job
Quotes
Quoted before any work starts
Call
0345 464 0079
Updated
26 October 2026
Fresh white silicone going into the corner where a shower screen meets the tiled wall

Looking after it afterwards

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

  • Report a tray that rocks or a worktop that lifts
  • Do not point over movement joints
  • Find out why the sealant failed first
  • Act on a lifting corner straight away

Do not let anyone seal over it later. New silicone does not bond to old.

If a joint has failed more than once, stop resealing it. Have someone find out why, or the next bead will go the same way.

Gillingham homes and their sealant

Gillingham is close to the coast. Coastal homes, holiday lets and guest houses can see heavy bathroom use in busy months, which wears sealant and grout out faster than in a quiet home. Most of the South East has hard water, which leaves limescale on sealant, grout and fittings.

If you let a flat or house near Gillingham (Kent) station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak. For an older house near a landmark such as Holy Trinity Church, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.

Gillingham is about 30 miles east of London, in Medway. Gillingham gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Gillingham is one of 68 places in Medway we cover. Chelmsford is on our list too, about 26 miles from Gillingham.

We cover every part of ME8, ME7, ME4 and ME5 for remedial sealant. Whether your property is on Leeds Square, London Road and Dorset Square or anywhere close by, our applicators can take on the job. Gillingham is on the A2 and A231, which makes it straightforward to reach with everything needed for remedial sealant. Nearby, we also carry out remedial sealant in Twydall (1 mile east), Lower Twydall (1 mile north-east), Grange (1 mile north), Darland (1 mile south-west) and Hale (1 mile south-west). We also work in nearby towns such as Rochester (4 miles west), Strood (4 miles west), Lordswood (3 miles south-west), Hoo St Werburgh (4 miles north), Rochester Riverside (3 miles north-west) and Walderslade (3 miles south-west). Being one of Medway’s larger places, Gillingham has every kind of property, from flats to offices.

What’s near Gillingham

Around Gillingham, our work takes us to homes and buildings near The Robert Napier School, The Robert Napier School and The Star pub and the streets around them. For rail, the closest station is Gillingham (Kent) station, roughly 1.5 miles north-west of the centre. Other landmarks nearby include Medway Maritime Hospital (1.6 miles west) and Six Poor Travellers House (3.3 miles west). Open spaces near Gillingham include Blue Bell Hill and Bishop Saltings.

Map of Gillingham © OpenStreetMap contributors

How we quote for remedial sealant

Some jobs are bigger than they look, and some smaller. What affects the quote:

  • The old material and how stubborn it is
  • The number and length of the joints
  • The number of rooms or windows
  • Which sealant suits the joint

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

What to tell us for a quote

A few details help us give you an accurate quote. When you get in contact, it helps to mention:

  • What’s wrong with the joints now
  • Roughly how big the job is
  • How we’d reach the joints
  • Where the job is, and your postcode

To get a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before we start.

DIY versus a professional finish

A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.

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.

Do you need remedial sealant in Gillingham?

All sealant wears out eventually. Over the years it shrinks, hardens and gets colonised by mould, especially in damp, poorly aired rooms. At that point it has to come out.

It’s worth asking for a quote if you see:

  • Thick, messy sealant smeared over tiles
  • Over-sealed joints coming away
  • Repeat leaks from the same joint
  • Caulk or the wrong sealant used in a wet area

Managing a site like Featherby Junior School? Then its toilets, changing areas and kitchens need their sealant renewed like any other building’s.

Before you book anyone

  • How the surfaces are prepared before sealing
  • What insurance they hold
  • Is the old sealant removed completely?
  • What product goes in the joint

Choosing a sealant specialist

What happens on the day

There’s no need to move everything out, only the area right around the joints. We protect the rest, and the work takes a few hours, depending on how many layers have to come out in most cases. Commercial jobs in Gillingham can be planned out of hours where a building cannot close, and homes are booked within our usual hours, Monday to Saturday.

  1. We start by checking the joint for movement, leaks and the reason it failed.
  2. All the old sealant comes out, including any layers underneath.
  3. The joint is cleaned, treated for mould and left to dry.
  4. Moving joints get backing and a flexible sealant to suit.
  5. Finally we finish the joint and talk you through what we found.

Before we arrive

  • On commercial sites, let us know about site rules
  • Move anything stored near the joints
  • Mention any tricky access

How to get a quote

We quote each job on its own, so the first step is telling us about yours. Simply call 0345 464 0079 or email us and describe the job, and pictures are welcome.

Ask for a quote

Related advice

Why it’s worth doing now in Gillingham

Stripping out botched sealant adds time to a reseal, but rarely a lot: the work takes a few hours, depending on how many layers have to come out. It’s far less disruption than resealing the same joint again and again. Busy buildings in Gillingham, from hotels to offices, cannot afford rooms out of use for leaks or mould, so it pays to replace failing joints before they get that far.

Doing several joints on one visit is normally more efficient than separate visits. You will get one clear quote for the whole job.

Why choose Mr Mastic in Gillingham

  • We agree the colour with you first
  • 20+ years of sealant experience
  • Quality sealants from Arbo and Everbuild
  • Colour picked to suit the job

Read what affects the cost or customer reviews.

Surface by surface

Windows & doors

Failed frame mastic is often hard, cracked and in several layers. We remove it all and clean back to sound surfaces before backing and resealing.

Over-sealed & botched joints

Botched joints sometimes have damaged edges from earlier scraping. We work carefully to avoid adding to it, and tell you about any damage we find.

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