How much does resealing cost?

Resealing starts from £60 and depends on how many joints and how much old sealant has to come out. A bathroom reseal is normally a short visit; damp-proofing larger wall areas is quoted per area.

How do I know if it's the sealant or a real leak?

Failed sealant usually shows as blackened or cracked joints and dampness directly behind them. If water is tracking from elsewhere, or the damp keeps returning after a reseal, the cause is likely a waste, a pipe or external water — we'll investigate and tell you what we find.

How long does new silicone last?

Good-quality mould-resistant sanitary silicone typically lasts five years or more in a well-ventilated bathroom. Regular cleaning with non-abrasive products and keeping the room aired will extend it considerably.

Can you treat mould as well as resealing?

Yes — we remove the failed seal, treat the affected area, and use mould-resistant products when resealing. Where the mould is caused by condensation, we'll explain what's driving it so the problem doesn't simply come back.

Do the surfaces need to be dry before you can seal?

They do — silicone won't bond to a wet surface. We dry the area as far as possible before application, and if a substrate is saturated we'll tell you what needs to dry first rather than sealing it and charging for a job that won't hold.

Back to services

from £60

Service

Sealant & Waterproofing

Silicone resealing, window and door frame sealing, and damp-proofing treatments to stop leaks, draughts and moisture damage. We remove old sealant, prep surfaces and apply durable, mould-resistant seals.

Who it's for

Homeowners, landlords and tenants dealing with leaking seals, draughts, mould or damp patches.

What's included

Bathroom & kitchen silicone reseal
Window & door frame sealing
Mould-resistant sealant application
Old sealant removal & surface prep
Damp-proofing treatment

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Duration

1–4 hours

Frequency

One-off · Recurring maintenance

Best for

Resealing, waterproofing and damp-proofing to stop leaks and draughts

Job breakdown by area

Bathroom & Kitchen

Silicone reseal around baths & showers
Sink & worktop reseal
Mould-resistant sealant
Old sealant removal

Windows & Doors

Frame sealing
Draught-proofing
Weatherproofing
Gap filling

Damp Proofing

Damp survey & assessment
Tanking / waterproof coating
Mould treatment
Anti-condensation paint

External

Expansion joint sealing
Weatherproof sealant
Gap & crack sealing
Mastic application

How it works

Assess

We identify the source of leaks, draughts or damp.

Prepare

Old sealant removed and surfaces cleaned and dried.

Seal

Durable, mould-resistant sealant applied neatly.

Test & tidy

We check seals and clean up after.

Equipment & products

Sealant gun & nozzles
Scraper & removal tools
Mould-resistant silicone
Primer & tanking compound
Caulking tools

Add-on job options

Tanking / wet-room sealing
Expansion joint sealing
External weatherproofing
Mould treatment

In depth

Sealing, resealing and damp-proofing done neatly

Water always finds the weakest joint. A silicone bead that's cracked, shrunk or gone black behind a bath or shower tray will let water into the floor and the room below; failed window and door seals cause draughts, damp patches and rising heating bills; and untreated mould keeps coming back no matter how often it's cleaned. We remove the failed material, prep the surface properly and reseal it with durable, mould-resistant product applied straight and neat.

Our most common jobs are bathroom and kitchen reseals, window and door frame sealing, and damp-proofing treatments on walls showing patches, tide marks or condensation damage. Where a leak turns out to be something else — a failed waste, a leaking pipe or a problem outside the property — we'll tell you rather than sealing over it and hoping.

We reseal across Peterborough and Cambridgeshire for homeowners, tenants, landlords and letting agents, and a reseal is one of the cheapest ways to make a tired bathroom or kitchen look cared for. It's also a regular part of our rental turnarounds, where a fresh seal is often the difference between passing a checkout and being asked to return.

Why customers choose Gleamo for this

Old sealant fully removed and surfaces cleaned and dried before anything new goes on.
Durable, mould-resistant silicone applied neat and straight, with clean tooled joints.
Wet areas resealed around baths, trays, screens, basins and worktops as standard.
Window and door frames sealed against draughts, water and insect ingress.
Damp patches treated at source, with the cause identified rather than covered up.
Honest diagnosis when the problem is a pipe or waste rather than a seal.

What affects the price

Number of joints — a single bath reseal is a short visit; a whole bathroom plus a kitchen takes longer.
Removal work — hardened, blackened or deeply failed sealant takes time to strip back properly.
Access — areas behind a bath, below a shower tray or outside a first-floor window add time.
Product — standard sanitary silicone versus tanking compounds and damp-proof treatments.
Surface condition — damp or damaged plaster sometimes needs to dry or be made good first.
Damp treatment area — larger wall areas needing treatment are priced by the area covered.

Optional extras

Tanking / wet-room sealing
Expansion joint sealing
External weatherproofing
Mould treatment

Coverage