Best Mould Remover UK: Fast & Effective Solutions

Black mould on tiles, grout and shower seals is a familiar problem in British bathrooms. The best mould remover UK formula should cling to vertical surfaces, lift stains and help slow regrowth. GLEAN makes a thick gel spray in the UK for showers, windowsills and kitchen splashbacks.

Different surfaces often require different mould treatments. The best mould remover spray can suit larger or more accessible areas, while the best bathroom mould remover is typically formulated for damp spaces such as showers, tiles and seals. For other surfaces, the best mould remover for walls depends on the wall finish and level of staining, particularly in cases involving black mould on bathroom walls.

Discover our Best Mould Remover UK in 2026 - GLEAN

How a Fast Mould Remover Works on Tiles, Grout and Silicone

A thin liquid often runs down the wall before it can sit on the stain. That is why many UK shoppers now look for a gel or foam that stays put on grout lines, shower seals and window frames.

The best mould remover UK product does three jobs. It breaks down the visible black or brown mark. It reaches into the tiny pits in grout and the folds of silicone. With regular use, some formulas also help slow new growth in the same damp spot.

Contact time matters more than heavy scrubbing. Leave the product on the surface for the time on the label, then wipe with a damp cloth. Light mould can fade the same day. Deep staining in old sealant may need a second pass, or the sealant itself may need replacing with a silicone sealant remover gel if the mould sits inside the bead.

Good airflow still counts. Open a window, run the extractor, and wear gloves. Avoid fabrics, as some active ingredients can bleach cloth.

Why UK Homes See Mould in Bathrooms and on Outdoor Stone

British weather keeps indoor air wet for much of the year. Hot showers, cooking and indoor drying all add moisture. When that moisture hits a cold tile, window or outside wall, water sits on the surface. Mould uses that film as a home.

Government housing guidance is clear on the health side. Damp and mould can affect the airways, lungs, eyes and skin. Cleaning the stain is only part of the job. The moisture source still needs attention, or the mark can return.

Indoor spots to watch:

• Shower corners and silicone beads

• Tile grout that has lost its seal

• Window frames and sills

• Kitchen splashbacks and sink edges

• Ceiling corners in poorly aired rooms

Outdoor growth looks different. Green and black staining on patios, roofs and decking is often a mix of mould, algae, lichen and moss. A bathroom gel is the wrong tool there. An outdoor treatment from the outdoor cleaners range is made for rain-washed stone, concrete and timber.

Best Mould Remover UK: Fast & Effective Solutions

1. GLEAN - Best Mould Remover UK

The standout indoor option is the GLEAN Mould Remover Gel Spray, a 500ml thick, non-drip gel made in the UK for tiles, walls, grout and silicone seals. Go Glean Ltd is based in Biggleswade, Bedfordshire, and the formula is built for the damp rooms you actually live in: bathrooms, kitchens and other humid corners.

Unlike runny supermarket sprays, the gel clings to vertical tiles and shower seals so the cleaner can sit in the stain. Shake, spray, leave it to work, then wipe. Light marks can start to lift in a short window. Deep black mould can be left for many hours, even overnight, before you wipe the residue with a damp cloth. A smart trigger with an on/off nozzle keeps the spray controlled, so you treat the grout line rather than soaking the whole wall.

Facts and information

• Thick gel stays on upright tiles, grout and seals

• Made in the UK for bathrooms, kitchens and windowsills

• Targets black mould and mildew stains

• Regular use helps maintain a cleaner, drier-looking surface

• No heavy scrubbing needed on many everyday marks

• Free next day shipping on GLEAN orders

Mould Remover Gel Spray | 500ml | GLEAN

Mould Remover Gel Spray | 500ml | GLEAN

Description

• TARGETS BLACK MOULD FAST: Cuts through black mould and mildew on tiles, grout, walls and silicone seals.

• CLINGING NON-DRIP GEL: Stays put on vertical and awkward surfaces so the formula can work deeper for longer.

• CONTROLLED TRIGGER SPRAY: Easy-squeeze bottle with on/off nozzle for precise, mess-free application.

• BUILT FOR DAMP ROOMS: Ideal for bathrooms, kitchens, showers and other high-humidity spots.

• HELPS STOP REGROWTH: Regular use keeps treated areas cleaner and reduces mould coming back.

• UK-MADE FORMULA: Quality British formulation designed to be effective and straightforward to use.

GLEAN Green Clean | Algae, Lichen, Moss & Black Spot Remover | 1 Litre & 5 Litre

GLEAN Green Clean | Algae, Lichen, Moss & Black Spot Remover | 1 Litre & 5 Litre

Description

• CONCENTRATED FORMULA: Easy to use - dilute as directed, then spray the target area with a standard garden sprayer and allow it to work. Mix 1 part GREEN CLEAN with 5 parts water before applying.

• WET IT - FORGET IT - WON'T REGRET IT: No rinse step. Coat the full surface and let GREEN CLEAN work in its own time. Once down, the treatment stays active and helps stop growth returning.

• FOR USE ON ALGAE: Timing can vary, but most green growth begins to fade within a few days of treatment.

• FOR USE ON MOSS: Soak the area so the solution reaches the surface the moss is clinging to. Within a few days the moss browns, curls and lifts away.

• FOR USE ON LICHEN: Treat twice, leaving 15 minutes between coats so the formula can penetrate the inner layer.

• NOT ONLY DOES GREEN CLEAN: Restore a growth-free finish - it also remains active to help delay early recontamination.

• SUITABLE FOR USE ON: Timber, natural and manufactured stone, roofs, tarmac, concrete, block paving and any other outdoor surface that receives rainfall.

• NO: Scrubbing, brushing, rinsing or pressure washing needed.

• COVERAGE: 100–300 m² per 5 litres

• MADE IN BRITAIN

Miracle Outdoor Cleaner | GLEAN

Miracle Outdoor Cleaner | GLEAN

Introducing our standout formula for restoring the fresh look of outdoor areas. The high-performance Brick Cleaner for Exterior use and Driveway Oil Stain Remover. Built for a wide range of surfaces, this path cleaner refreshes patios, drives and brickwork with less effort, so outdoor spaces stay clean and welcoming.

Our eco-friendly patio cleaner is a practical household staple that targets typical outdoor marks and growth. Use it as a patio cleaner for pressure washers or as a spray-and-leave treatment; it works on patios, driveways and brick exteriors.

Description

• POWERFUL OUTDOOR CLEANER: Cuts through and helps control green and black staining from mould, lichen and algae.

• MULTI-SURFACE USE: Works on concrete, brick, wood, UPVC, tarmac, natural stone and similar outdoor materials.

• FAST-ACTING FORMULA: Short dwell time and little heavy scrubbing for quicker outdoor cleaning.

• ALL-WEATHER APPLICATION: Outdoor stain remover you can apply in varied weather conditions.

• GENEROUS COVERAGE: One bottle treats up to 25 sqm, good value for patios, driveways and garden surfaces.

Tile & Grout Sealer Aerosol 400ml | Clear Waterproof Grout Protector

Tile & Grout Sealer Aerosol 400ml | Clear Waterproof Grout Protector

GLEAN Tile & Grout Sealer Aerosol 400ml creates an invisible, water-repellent shield that guards tiles and grout joints against moisture, oil, dirt, grease, mould, and limescale. Suited to kitchens, bathrooms, showers, and other damp spaces, it helps tiled surfaces stay cleaner and look newer for longer.

Description

• WATERPROOF PROTECTION: This clear aerosol tile and grout sealer spray forms a moisture-blocking barrier that reduces water absorption and helps stop stains, grease, mould, and limescale from taking hold.

• VERSATILE USE: Made for kitchen and bathroom tiles, this grout protector spray covers showers, splashbacks, wet rooms, and tiled floors in high-humidity areas.

• STAIN PREVENTION: A transparent waterproof film helps keep oil, dirt, and grease from soaking into tiles and grout so surfaces stay fresher and easier to wipe clean.

• MOULD AND LIMESCALE RESISTANT: Helps limit mould and limescale build-up for more hygienic tiled areas that need less intensive upkeep.

• EASY APPLICATION & LONG LASTING: Quick-to-use aerosol tile and grout sealant applies fast and dries clear. The durable invisible coating supports longer-lasting protection for tiles and grout.

WHY GOGLEAN?

Go Glean Ltd is a UK specialist in high-performance hard-surface cleaners and treatments. We focus on reliable, well-made formulas for everyday household use around the home.

Discover our Best Mould Remover in the UK - GLEAN

2. Astonish Mould and Mildew Remover

Astonish is a Bradford household name and this spray is the bottle many UK families already have under the sink. It is a thin liquid rather than a cling gel, so you mist the tiles, grout and shower curtain, wait a short while, then wipe. On fresh mildew around taps and window frames the mark often fades without a long wait, which is why it turns up in everyday bathroom routines.

The formula is bleach-free, so the room does not fill with the sharp chlorine note you get from some supermarket sprays. That makes it easier to use in a small ensuite if you open a window. The flip side is hold. On upright silicone the liquid can run toward the tray before it has sat in the stain. Deep black growth inside an old bead may only lighten, not vanish, and you can be left wiping the same corner again after the next hot shower.

It suits light, regular clean-ups more than a neglected shower that has been staining for months. Pair it with better airflow and a dry wipe of the seals if you want the result to last. For tight grout lines a brush-on gel still gives more control than a wide mist.

• Key features: trigger spray, bleach-free liquid, use on tiles, grout, curtains and frames

• Facts and information: made by a long-running UK brand in Bradford, easy to find in grocery aisles, apple-scented versions sit in the same cupboard range, strongest on new surface growth rather than stained-through sealant

3. Dettol Mould and Mildew Remover

Dettol is the hygiene brand most people in Britain recognise from first-aid shelves, and the mould spray follows that same bathroom brief. Reckitt is based in Slough. The bottle is a bleach-based trigger aimed at tiles, grout, basins, toilets and shower surrounds. Dark film on ceramic often pales after a short dwell, which is the main reason shoppers reach for it during a weekend clean.

Because it is a thin spray, it covers a wall of tiles quickly. That same thin body is weaker on vertical silicone. Product can slide off the bead before it soaks in. You need gloves and a window open. The smell is familiar and quite strong in a closed room. Bleach can lighten grout, yet it will not restore worn joint colour on its own, and it will not fix steam that sits on cold tiles every morning.

Use it when you want a fast visual lift on hard bathroom fittings. Keep it off fabrics and test chrome if you are unsure. After the stain has gone, drying the enclosure matters more than a second blast of spray. If the same corner returns, look at the extractor and the condition of the seal before you buy another bottle of the same type.

• Key features: bleach bathroom spray, wide trigger pattern, labelled for ceramic, acrylic and similar fittings

• Facts and information: household UK brand with a long grocery presence, built for visible bathroom marks, ventilation needed during use, better on flat tiles than on porous paint or tired silicone

4. Cillit Bang Black Mould Remover

Cillit Bang became a fixture in British cupboards after its mid-2000s launch, and the black mould spray is the version people buy for grout that has turned dark. It is a liquid bleach cleaner for tiles, baths, sinks and shower screens. Many users like how quickly the stain on a grout line fades after a brief wait and a wipe.

Speed is the point of the product. Cling is not. On a vertical seal the liquid can run before it reaches mould that sits inside the rubbery bead. The scent is sharp while it works. Some surfaces look brighter almost at once, which feels satisfying in a grimy shower, but the same patch can return if condensation is still heavy.

It is a fair choice for a one-off attack on tiled walls you can rinse easily. It is a weaker match for painted plaster, fabrics or outdoor stone. If the silicone is cracked or stained through, spraying again will not rebuild the joint. Clean what you can, then decide whether the bead needs cutting out. For everyday upkeep, a thicker gel that stays on the line often needs fewer repeat passes.

• Key features: trigger spray aimed at black mould, short contact time on many packs, bathroom and kitchen tiles

• Facts and information: long UK high-street presence, often picked for grout staining, stronger visual change on hard tiles than on porous walls, harsh fumes unless the room is aired

5. Kilrock Blast Away Mould Brush On Gel

Kilrock is a British cleaning brand and Blast Away is built for neat work rather than a wide mist. A brush sits under the cap, so you paint gel onto grout lines and silicone joins. That is useful when you want the product on the joint and not running down a glass screen.

The gel body helps it stay where you put it, which is closer to how a specialist bathroom treatment should behave. You can treat a stained corner of the bath without soaking the whole enclosure. Bottle size is smaller than a big trigger spray, so a fully tiled wet room takes patience. Some people find a wide spray faster on large walls and then switch to the brush for the bead.

Results depend on how long you leave the gel in place. A quick wipe after a few minutes may only lift the top film. Giving it proper contact time, then wiping with a damp cloth, is the better habit. As with any mould product, split or hollow sealant can still hide growth you cannot reach. The brush is a tool for the surface of the joint, not a repair for a failed seal.

• Key features: brush-on gel, applicator under the lid, aimed at grout and silicone

• Facts and information: UK brand sold through DIY and grocery sites, good control on narrow joints, slower coverage on full walls, closer in feel to a cling gel than to a runny bleach mist

6. Dryzone Mould Remover and Prevention Kit

Dryzone comes from Safeguard Europe, a UK firm that specialises in damp problems rather than general grocery cleaning. The kit is a two-step idea: one spray to treat the visible mark, then a follow-up to help slow new growth on the same wall or ceiling. That suits rented flats and older houses where condensation keeps coming back each winter.

You clean first, let the surface dry, then apply the prevention coat. It is more of a small system than a single grab-and-go bottle. For a tiny spot on a shower screen that can feel like extra steps. For a bedroom wall that stains behind a wardrobe every year, the second product is the part many people actually need.

The sprays are still surface treatments. They do not mend a leaking gutter, a cold bridge or a blocked trickle vent. Government housing guidance says you should treat the mould and the moisture source together. Use the kit as the clean-and-protect layer, then keep air moving and furniture off the wall. If plaster is blown or paint is flaking, you may need decorating prep as well as a spray.

• Key features: dual-action kit, remover plus prevention spray, indoor walls and ceilings

• Facts and information: UK damp specialist brand, sold as a longer plan rather than a one-spray wipe, useful where the same patch returns each season, not a patio or fabric product

7. Polycell 3-in-1 Mould Killer Spray

Polycell sits on UK decorating aisles next to fillers and paints, and the 3-in-1 spray is aimed at walls you are about to redo. It is sold as a killer, cleaner and protector for stained plaster and paintwork. That is a different job from a daily shower gel.

If a bedroom ceiling or a bathroom wall has speckled growth and you plan to redecorate, this type of product fits the sequence: treat, let it dry, then paint with a suitable finish. The smell can be sharp. Open windows and keep off skin. It is not designed as a cling treatment for silicone around the bath, and it is the wrong bottle for paving or decking.

People sometimes expect one decorating spray to replace a bathroom gel. It will not. Grout lines and shower beads still need a formula that sits in the joint. Use Polycell on the large painted surface, then keep a dedicated gel for tiles. If the wall stays cold and wet after painting, the mark can return through the new coat, so airflow still comes first.

• Key features: fungicidal spray for walls, marketed for pre-paint prep, indoor plaster and paint

• Facts and information: familiar UK decorating brand, better as wall prep than as a grout gel, ventilation required, poor match for outdoor stone and for fabric

8. Ecozone Bleach-Free Mould Remover

Ecozone is a UK brand that leans toward bleach-free formulas for people who dislike chlorine in a small bathroom. The mould remover is a liquid spray for tiles and similar hard surfaces. You mist, wait, and wipe, much like other grocery cleaners, but without the bleach “flash” that some sprays use to whiten grout on the spot.

That milder profile is the reason some households choose it, especially if strong fumes set off a cough. The trade-off is pace and depth. Stubborn black staining inside old sealant may need more than one pass, and grout may not jump back to bright white after a single short wait. Patience and repeat wiping matter more than with a heavy bleach mist.

It is a sensible bottle for light, regular care when you already ventilate well. It is less convincing as the only product in a shower that has been neglected for a long time. Test a small area on coloured grout or natural stone. Keep it as the everyday option and use a thicker gel when a corner has gone dark and stays dark after a normal clean.

• Key features: bleach-free liquid, eco-positioned UK brand, bathroom hard surfaces

• Facts and information: chosen by shoppers avoiding chlorine, gentler scent than many bleach sprays, may need extra passes on deep stains, not intended as an outdoor patio wash

9. Everbuild Mould Remover and Fungicidal Wash

Everbuild started in Leeds and remains a common name on UK trade counters, even after joining a larger building-chemicals group. The fungicidal wash is a contractor-style liquid for walls, masonry and pre-paint work as much as for a family bathroom. Tins are aimed at coverage, not at painting a thin line of silicone with a brush.

That makes it useful when a whole elevation of painted wall or an area of masonry needs treating before you decorate. It is less handy for a five-minute wipe around the taps. The wash can smell strong. Gloves, eye care and fresh air are part of the job, as with other biocidal products. Always try a hidden patch on delicate finishes.

Do not treat it as a shower gel. Do not tip it onto fabrics or onto a polished worktop unless the label says so. After the wash has done its work, the wall still needs to dry. If rising damp or a leak is feeding the stain, the growth can return through fresh paint. Use this when the task looks like a decorating or masonry job, and keep a cling gel for grout and seals.

• Key features: ready-to-use fungicidal wash, trade and DIY sizes, walls and masonry

• Facts and information: common in UK builders’ merchants, better for large wall jobs than for silicone beads, often used before decorating, needs the same care as other biocidal washes

10. Furniture Clinic Mould Remover Spray

Furniture Clinic is a British firm known for leather and fabric care. Its mould spray is for soft furnishings, mattresses and similar indoor items, which is a gap most bathroom gels do not cover well. Hard-tile formulas and bleach mists can mark dyes, so a product aimed at furniture is the safer starting point for a sofa, curtain or fabric headboard.

You spray the affected area, allow contact time, then lift the residue as the instructions say. Always test a hidden patch. Some fabrics hold moisture deep in the filling, and a surface spray will not dry a damp mattress on its own. Take the item into dry air if you can. Mould on fabric often means the room itself is wet, so wiping the cloth without airing the space only delays the next mark.

This is not the bottle for shower grout, patio slabs or painted masonry. Keep roles separate: fabric spray for textiles, gel for tiles and seals, outdoor cleaner for stone. If leather or suede is involved, follow the brand’s care notes for that material rather than assuming a bathroom product is close enough.

• Key features: spray aimed at furniture and fabrics, UK specialist brand, indoor soft surfaces

• Facts and information: useful where bathroom bleach would be too harsh, not a grout or patio product, hidden-patch testing is wise, works best when the room is dried at the same time

11. Mould Magic Gel

Mould Magic is the tube gel sold through UK direct retailers for sealant and grout lines. It is a paste you squeeze onto the stained bead rather than a wide room mist. That format is the whole point. The gel sits on silicone, which is where thin supermarket sprays often fail because they run off the shiny surface.

You apply a line, leave it for a long contact time, then wipe. On mould that lives on and just in the face of the seal, many users see the black film lift. Residue can be sticky, so a thorough wipe with a damp cloth matters. It is slower than a 30-second bleach spray and less convenient to buy on a normal grocery run, because it is not always on the same shelf as the big trigger brands.

Coverage is modest. A full tiled wall is the wrong use. Think of it as a sealant specialist. If the bead is split, hollow or stained right through, the gel can only treat what it can touch. Cutting out failed silicone and resealing still wins in those cases. Use this when the problem is a narrow joint, not when the whole ceiling is speckled.

• Key features: squeeze-on gel, aimed at silicone and grout, long dwell time

• Facts and information: sold mainly through specialist UK retailers rather than every supermarket, strong on sealant faces, fiddly to rinse if left too thick, poor choice as a whole-room wall spray

12. Ronseal Mould Killer

Ronseal is the Sheffield decorating brand most people know from woodcare tins, and the mould killer sits in that same DIY aisle. It is aimed at indoor walls and related surfaces you might treat before you paint, rather than at a daily shower wipe. The idea is to deal with growth on plaster and paint so you are not decorating over an active stain.

As a wall treatment it covers more ground than a tiny sealant tube. As a bathroom grout product it is less precise. Thin sprays in this category do not cling like a dedicated gel, and the scent can be strong while you work. Open the windows. Keep it off furnishings unless the label allows that use.

Match the bottle to the surface. Painted bedroom walls and pre-paint prep are the natural fit. Shower silicone and outdoor paving are not. After treatment, let the wall dry fully before new paint. If the room still runs with condensation, the speckling can return through the fresh coat. Keep a separate indoor gel for tiles and an outdoor cleaner for patios, rather than asking one decorating spray to do every job in the house.

• Key features: DIY mould killer spray, indoor walls, used in decorating prep

• Facts and information: well-known UK decorating brand, better on plaster and paint than on shower beads, ventilation needed, not a leave-on patio treatment or a fabric cleaner

How to Keep Mould from Coming Back After You Clean

Cleaning the stain is the visible win. Keeping the surface dry is what lasts.

UK homes produce a lot of steam. A short burst of air after a shower does more than another bottle under the sink. Run the extractor until the mirror clears. Crack a window. Wipe the silicone bead when you see water sitting on it.

Simple habits that help:

• Dry washing outside or in a closed room with a window open

• Leave a gap behind wardrobes so walls can breathe

• Keep trickle vents clear

• Use lids on pans and the cooker hood when you boil food

• Reseal shower joints when the bead splits or stays stained inside

After the grout looks clean, a clear tile and grout sealer adds a water-shedding film that makes the next wipe easier. In the shower, a shower glass cleaner and descaler keeps glass clear so you can see new spots early.

If mould keeps returning in the same patch, look for a leak, cold bridge or blocked vent. Surface products cannot fix a failed flashing or a dripping shower tray.

Indoor Gel Versus Outdoor Mould Treatment

Indoor black mould on grout is not the same as green-black growth on York stone. Mixing the two products wastes time.

Indoor gel sprays are thick on purpose. They cling to shower walls and window reveals. You wipe them off after a set time. They belong in the indoor range with other bathroom and kitchen cleaners.

Outdoor treatments are thinner or concentrated for a garden sprayer. They stay active in the rain and work across large areas of paving, roof tiles and fencing. Green Clean is the leave-on style: wet the surface and walk away. Miracle Outdoor Cleaner is the spot treatment for marked paths and steps.

Patio joints collect dirt and hold water, which feeds growth along the edges of slabs. Once the surface is clean, sound jointing from the tile and grout range helps water drain instead of sitting in open gaps. That is maintenance, not a substitute for a mould gel in the shower.

When Silicone Needs Replacing, Not Just Spraying

Mould on the surface of silicone often wipes away. Mould inside a cracked or poorly stuck bead does not. The fungus sits in the body of the sealant. No spray can rebuild that joint.

Signs the bead should come out:

• The stain stays grey or black after a full dwell time

• The silicone has pulled away from the tile

• Water seeps behind the bath panel or tray

• The joint feels slimy even after cleaning

A silicone sealant remover softens the old bead so you can lift it cleanly. Dry the joint fully before you apply new sanitary silicone. If water is still leaking, fix that first.

Blocked shower traps also keep the room wet. A drain unblocker helps water leave the tray instead of sitting in the enclosure.

Frequently Asked Questions

What is the best mould remover for bathroom grout in the UK?

A thick gel that stays on the joint works better on bathroom grout than a thin liquid that runs to the floor. GLEAN Mould Remover Gel Spray is made for tiles, grout lines and silicone seals in damp UK bathrooms and kitchens. The gel clings to upright joints so the cleaner can sit in the stain, then you wipe the residue with a damp cloth. If the grout still looks faded once the black mark has gone, a grout reviver and sealer kit brings the colour back and helps the joint shed water.

How long should I leave mould remover on tiles?

Contact time matters more than hard scrubbing. Light mould on tiles can start to lift the same day. Deep black mould on grout or shower seals often needs many hours, and a cling gel can sit overnight before you wipe it away. Keep the room aired, wear gloves, and do not let the product dry into a crust you cannot lift. Repeat on the same spot if the stain is old, rather than rushing a second coat too soon.

Does bleach remove black mould for good?

Bleach can lighten a stain on hard tiles and make grout look brighter for a while. It does not always reach growth sitting inside porous grout or inside a cracked silicone bead, and it does nothing about steam from the next shower. Treat the mark, dry the room, and seal clean grout with a tile and grout sealer so moisture is slower to soak back in. If the same patch returns, the joint or the ventilation is still the problem.

Can I use a bathroom mould spray on my patio?

A bathroom gel is made for indoor tiles, walls and seals, not for rain-washed paving. Outdoor staining on stone, concrete and timber is often a mix of mould, algae, lichen and moss, so it needs an outdoor treatment. GLEAN Green Clean and Miracle Outdoor Cleaner sit in the outdoor cleaners range for that job. Once the surface is clear, sound joints from the tile and grout range help water drain instead of sitting in open gaps.

How do I stop mould coming back on shower seals and windowsills?

Cleaning the stain is only half the work. Steam from showers, cooking and indoor drying feeds new growth if water sits on cold tiles, silicone and glass. Run the extractor until the room dries, wipe standing water off seals, and leave a little air around windowsills. When mould is stained through a split bead, a silicone sealant remover lets you lift the old joint and fit a new sanitary seal. A blocked tray also keeps the enclosure wet, which is where a drain unblocker helps water leave the shower instead of sitting on the silicone.

Read Also:

• Best grout for patio slabs

• Patio jointing compound: complete guide to brush in patio grout

• How long does brush in patio grout last?

• Best paving grout for patios and driveways

• What is jointing compound and how to use it on patios

Discover our Best Mould Remover in UK - GLEAN