Did you know that between 4% and 27% of homes in England are affected by damp and mould? That’s roughly 962,000 to 6.5 million households.
If you are one of those affected, you know how frustrating it can be. Black mould spreads quickly on walls, bathroom seals, and window frames. It can damage your home and even affect your health. That’s why it’s important to deal with it at the first sign.
But where do you start? Most informed UK homeowners turn to HG mould removers. Why? Because HG offers a range of products that don’t just mask the problem; they target the mould at the source, remove it effectively, and help prevent it from coming back.
In this guide, we review the top 10 best HG mould removers for UK homes. You’ll learn which product works on which surfaces, how to use it safely, and which options give the longest-lasting results, so you can finally stop mould from taking over your home.
Top 10 Best HG Mould Removers for UK Homes Compared
1. HG Mould Remover Foam Spray – 500 ml (Pack of 2)
Finding black spots creeping along your bathroom tiles or window frames is a total nightmare. It feels like your home is under attack, and scrubbing rarely seems to finish the job. This HG foam spray changes the whole approach to cleaning those damp corners.
Instead of a watery liquid that just slides down the wall, this comes out as a thick lather that actually grips the surface. It sits right on the mould for thirty minutes, doing the hard work while you do something else. This two-bottle bundle is a smart choice if you have a damp en-suite and a conservatory that both need refreshing.
Key Features
- Vertical Grip: The thick foam consistency keeps the treatment from sliding off walls or dripping from ceilings.
- Thirty-Minute Action: It works quickly to dissolve black stains, fungus, and algae without needing a brush.
- Linen Scent: A lower-odour formula makes the cleaning process much less overwhelming than traditional bleach sprays.
- Targeted Application: The foam nozzle reduces splashing, which helps protect your clothes and skin during use.
- Outdoor Capability: Beyond the bathroom, it is strong enough for sheds, garages, and even swimming pool areas.
Pros
- Zero scrubbing required—just spray it on and wash it off later.
- The foam stays active on the mould longer than liquid sprays do.
- Great value bundle for treating multiple rooms or larger damp areas.
- Much easier to control in tight corners or along silicone seals.
Cons
- The bleaching agents might cause brown marks on ancient tiles or specific sealants.
- It is restricted to certain surfaces; you can’t use it on wood or metal.
Why we recommend HG Mould Remover Foam Spray – 500 ml (Pack of 2)
It stops the constant scrubbing. If you want those bathroom seals looking white again without the elbow grease, this is a very reliable shortcut.
Check prices on Amazon: HG Mould Remover Foam Spray – 500 ml (Pack of 2)
2. HG Mould Remover Foam Spray – 500ml (Single Pack)
This single 500ml bottle is the same high-performance formula as the twin pack we just discussed. It offers the same thick foam that clings to surfaces, making it a great starting point if you have a smaller bathroom or just a few patches of grout to fix.
While the previous option was better for bulk jobs in the garage or shed, this version is perfect for keeping under the sink for quick touch-ups. It kills algae and fungus just as fast, usually in under 30 minutes.
Key Features
- Clinging Foam: Just like the larger pack, this foam stays on vertical tiles much longer than standard liquid sprays.
- Rapid Action: Effectively targets and eliminates black mould stains and mildew in about half an hour.
- Versatile Use: Safe for bathroom seals, plastered walls, and even outdoor furniture or swimming pool areas.
- Less Splatter: The foam delivery system keeps the bleach on the wall and away from your clothes or carpets.
- Re-growth Prevention: This formula helps keep surfaces clear for longer by actively preventing the return of fungus.
Pros
- Requires zero scrubbing; the chemical action does all the heavy lifting for you.
- The 500ml size is easy to store and handle for precise application in tight corners.
- Milder linen scent makes it less overwhelming than typical supermarket bleach cleaners.
- Excellent for overhead grout lines where a runny liquid would simply drip off.
Cons
- Not suitable for sensitive materials like wood, metal, or decorative plaster.
- The bleaching agents are strong, so you’ll need to wear gloves and ensure good airflow.
Why we recommend HG Mould Remover Foam Spray – 500ml
It provides the same professional-grade results as the double pack. If you want white grout without the effort, this single bottle is the perfect tool.
Check prices on Amazon: HG Mould Remover Foam Spray – 500ml
3. HG Mould Spray, Effective Black Mould & Mildew Cleaner – 500ml
This is the liquid sibling to the foam versions we just looked at. While the foam stays put on walls, this classic spray is often the go-to for deep cleaning flat surfaces like bathroom floors, sinks, or bathtubs. It is a bit more aggressive and targets the roots and spores directly.
If you found the foam version useful for vertical tiles, you’ll appreciate how this liquid penetrates deep into porous grout to clear those stubborn stains. It’s a straightforward, highly effective choice that has earned its spot as a household staple.
Key Features
- Deep Penetration: The liquid formula gets right into the pores of grout and seals to kill mould at the source.
- Rapid Action: Just like the foam, it works in 30 minutes to make dark, dingy marks vanish.
- Spore Killer: It doesn’t just clean the surface; it destroys the roots to stop mould from returning quickly.
- Versatile Application: Great for everything from shower cubicles and saunas to outdoor garden furniture and sheds.
- Targeted Nozzle: Features a locking safety spray head that helps you aim the product exactly where the mildew is hiding.
Pros
- Usually more cost-effective than the foam version for covering larger flat areas.
- Extremely powerful on stubborn, long-term stains that haven’t shifted with standard cleaners.
- Zero scrubbing needed; the chemical reaction handles the grime while you wait.
- Works brilliantly on both indoor damp spots and outdoor green algae deposits.
Cons
- The liquid consistency is more prone to running and splashing compared to the foam.
- Has a stronger chemical scent, so keeping the window wide open is absolutely essential.
Why we recommend HG Mould Spray
It is the ultimate “reset button” for a dirty bathroom. This spray is faster and more powerful for those heavy-duty deep cleaning sessions.
Check prices on Amazon: HG Mould Spray, Effective Black Mould & Mildew Cleaner – 500ml
4. 3 X Mould Remover Foam Spray (500ml each)
If you liked the convenience of the single bottle or the twin pack we looked at, this three-pack is the ultimate stash for a big spring clean. It’s the same reliable foam formula that stays exactly where you spray it.
This is a lifesaver when you’re tackling more than just a small patch of grout. With three bottles, you can comfortably move from the bathroom to the cellar or even out to the garage without worrying about running out. It handles those stubborn black spots just as effectively as the smaller sets.
Key Features
- Bulk Value: This triple pack provides 1500ml of cleaner, perfect for large-scale mould remediation projects.
- Vertical Cling: The unique foam formula sticks to walls and seals better than the liquid spray version.
- Low Odour: Designed to be less pungent, making it a bit more manageable during longer cleaning sessions.
- Precision Spray: The nozzle allows you to target specific black spots, which drastically reduces accidental splashing.
- Multi-Location Use: Works on everything from kitchen tiles and saunas to outdoor garden statues and balconies.
Pros
- Having three bottles on hand ensures you won’t run out midway through a big job.
- The foam stays in contact with the mould for longer, increasing its cleaning power.
- Remarkably effective on natural stone and marble, which can be tricky to clean safely.
- Requires no scrubbing; the foam does the heavy lifting on its own in 30 minutes.
Cons
- Not recommended for use on artexed ceilings or laminated materials.
- Still contains strong chemicals, so you’ll need to keep the area very well-ventilated.
Why we recommend 3 X Mould Remover Foam Spray (500ml each)
It offers the best value for a total home refresh. If you have multiple rooms or outdoor areas to treat, this triple pack is the way to go.
Check prices on Amazon: 3 X Mould Remover Foam Spray – The Most Effective Black Mould Remover
5. HG Mould Preventor Spray, Bathroom Cleaner Protector – 500ml
While the foam and liquid sprays we just looked at are brilliant for killing existing mould, this Preventor Spray is the logical second step. It’s designed to stop those black spots from coming back in the first place.
Once you’ve used the HG Mould Remover to get your grout and tiles looking white again, applying this clear guard seals everything off. It’s a liquid formula that creates a barrier against moisture and air, which basically starves any potential mould before it can start.
Key Features
- Protective Barrier: Effectively seals non-porous surfaces like silicone and tiles so mould can’t take hold.
- Natural Ingredients: The formula is made with 99% naturally sourced ingredients, making it a bit gentler for regular home use.
- Invisible Finish: Works on both glossy and matte surfaces without leaving a sticky or slippery residue.
- Long-Lasting Guard: One application provides a solid layer of protection for up to two months.
- Wide Coverage: A single 500ml bottle is enough to treat roughly 10 to 12 square metres of bathroom space.
Pros
- Drastically reduces the amount of scrubbing you’ll need to do in the future.
- Easy to apply to shower screens, plastic trims, and shower trays.
- Helps maintain the clean look achieved by the HG foam and liquid removers.
- Makes general bathroom wiping much easier as grime doesn’t stick as easily to the treated surface.
Cons
- You must remove all existing mould first, or you’re just sealing the problem in.
- Requires re-application every eight weeks to stay fully effective.
Why we recommend HG Mould Preventor Spray
It’s the best way to break the cycle of cleaning. Use this after the remover sprays to keep your bathroom looking fresh for much longer.
Check prices on Amazon: HG Mould Preventor Spray – 500ml
6. 1 x HG 500ml Mould Remover Foam Spray (ZINNIAUK)
While this is the same trusted HG formula we have explored in the twin and triple packs, this specific listing is managed by ZINNIAUK. It’s the identical linen-scented foam that clings so well to vertical surfaces.
If you’ve already used the HG Preventor to safeguard your bathroom and just need a single bottle for a quick touch-up in the conservatory or sauna, this is a handy option. It delivers that same heavy-duty punch against black deposits without the mess of a runny liquid.
Key Features
- Vertical Cling: The thick foam action ensures the cleaner stays on the wall or grout rather than dripping onto the floor.
- Milder Scent: Features a low-odour formula, making it much more pleasant to use in enclosed shower cubicles or small saunas.
- Deep Cleaning: Effectively targets black mould, mildew, and stubborn algae deposits in about 30 minutes.
- Versatile Use: Safe for a variety of damp-prone areas, including swimming pools, window frames, and bathroom seals.
- Controlled Application: The foam spray nozzle helps you aim precisely, which means less waste and fewer splashes on your clothes.
Pros
- No scrubbing is needed; the foam does the heavy lifting while you wait for it to work.
- Perfect for overhead grout lines where standard liquid sprays would simply fall away.
- A single bottle is ideal for small households or focused cleaning tasks in one room.
- Restores the original look of tiles and seals while helping to delay the return of fungus.
Cons
- The price per litre is higher on this single pack compared to the bundle deals we looked at earlier.
- Must be used in well-ventilated spaces due to the chlorine-based bleaching agents.
Why we recommend 1 x HG 500ml Mould Remover Foam Spray (ZINNIAUK)
It offers the same reliable “spray and wait” convenience as the larger packs. This single bottle is perfect if you only have one specific problem area to fix.
Check prices on Amazon: 1 x HG 500ml Mould Remover Foam Spray (ZINNIAUK)
7. HG Mould Remover Foam Liquid – 500ml (Pack of 3)
While we previously looked at a 3-pack of the spray, this bundle is specifically listed as a liquid form. This consistency actually gives you a bit of an edge for certain jobs because it can soak deep into porous grout and seals where mould roots often hide.
If you have already used the foam bottles for your bathroom walls, this liquid-based triple pack is a solid follow-up for floor tiles or kitchen surfaces. It delivers the same heavy-duty performance, making those filthy black stains vanish in under 30 minutes without needing any effort on your part.
Key Features
- Deep-Soak Action: The liquid formula is designed to penetrate into the pores of grout and silicone seals better than thicker alternatives.
- Bulk Volume: Three 500ml bottles provide a total of 1500ml, perfect for whole-house deep cleaning.
- Fast Acting: Targets and eliminates black mould and fungus marks in less than 30 minutes.
- Versatile Use: Suitable for plastered walls, bathroom seals, swimming pools, and even UPVC window frames.
- Bleaching Effect: A powerful formula that restores white surfaces to their original look by lifting deep stains.
Pros
- No scrubbing is required; the chemical action does the hard work while you wait.
- More cost-effective for treating large areas or multiple rooms compared to single bottles.
- Excellent for flat surfaces where the liquid can settle into the fungus.
- Great for outdoor maintenance on garden furniture, sheds, and conservatory cladding.
Cons
- The liquid consistency is more likely to run on vertical surfaces than the foam version.
- Strong chemicals mean you must wear gloves and keep the windows wide open during use.
Why we recommend HG Mould Remover Foam Liquid – 500ml (Pack of 3)
It offers the best value for a complete home refresh. If you need a large supply that penetrates deep into grout, this triple pack is the most practical choice.
Check prices on Amazon: HG Mould Remover Foam Liquid – 500ml (Pack of 3)
8. HG Mould Destroyer Foaming Spray 500 ml
While we have looked at the standard foam and liquid options, this “Destroyer” version is the heavy-duty choice for those truly stubborn black spots. It is specifically formulated to act longer than other sprays in the range.
If you found the previous 0.5L foam spray useful for general maintenance, you’ll find this one even more effective for deep-seated stains in the shower. It clings to silicone joints and tiles with a specialized grip, ensuring the active ingredients stay exactly where they are needed most.
Key Features
- Enhanced Adhesion: The unique foam composition sticks to surfaces longer than standard sprays for a deeper clean.
- Stubborn Stain Targeting: Specifically engineered to tackle the most persistent black mould that other cleaners might miss.
- Precise Application: The foaming action allows you to hit small silicone joints without the product running or wasting.
- Splatter-Free: Since it isn’t a thin liquid, you don’t have to worry about it splashing back onto your clothes or the floor.
- Discreet Fragrance: Unlike some of the harsher chemical scents we’ve discussed, this leaves a much more pleasant and mild aroma.
Pros
- It removes both the stain and the mould in one single step, saving you time.
- Excellent for vertical surfaces where you need the product to sit and work for the full 30 minutes.
- Provides a hygienic result that makes your bathroom feel genuinely deep-cleaned.
- No scrubbing is necessary; simply rinse away the foam with a sponge after it has acted.
Cons
- Like the previous HG products, it is very powerful and requires careful handling with gloves.
- You need to ensure the room is well-ventilated while the “destroyer” formula is at work.
Why we recommend HG Mould Destroyer Foaming Spray
It is the most powerful option for those nightmare mould patches. If the standard sprays haven’t quite done the trick, this destroyer formula is the final answer.
Check prices on Amazon: HG Mould Destroyer Foaming Spray 500 ml
9. HG Mould Spray & Remover (6 Sprays)
This six-pack is the ultimate bulk solution compared to the three-packs we’ve previously discussed. While those smaller sets are perfect for a quick bathroom refresh, this bundle doubles your supply of the classic spray. It is the smartest choice for a larger property or for tackling several damp-prone spots like a cellar, garage, and conservatory all at once.
This spray format is designed to mist over surfaces and get right into the grit of the grout. If you liked the efficiency of the three-pack but found yourself running low too quickly, this bulk option ensures you can finish the whole house without stopping.
Key Features
- Double the Volume: Provides twice the coverage of the three-pack, giving you six 500ml spray bottles for massive projects.
- Misting Spray Action: The spray format is ideal for covering large surface areas and soaking into the pores of seals and joints.
- Fast Results: Just like the smaller sets, it eliminates black mould and mildew stains in under 30 minutes.
- Multi-Room Utility: Ideal for kitchens, bathrooms, saunas, and even outdoor areas like swimming pools.
- Scrub-Free Cleaning: The chemical action removes the need for physical scrubbing on most surfaces.
Pros
- Offers the best overall value for money when compared to buying single bottles or triple packs.
- The spray format is much easier to distribute over wide floor tiles or large outdoor surfaces than the thicker foam.
- Perfect for landlords or those dealing with recurring issues across multiple rooms.
- Targets the roots of the fungus to help prevent it from returning as quickly.
Cons
- As a spray, it can mist more easily in the air, making ventilation even more critical than with the foam.
- Takes up more storage space than the single or triple packs.
Why we recommend HG Mould Spray & Remover (6 Sprays)
It is the ultimate value choice for big projects. When a three-pack isn’t enough to cover your entire home and outdoor areas, this is the most practical way to stock up on the original spray formula.
Check prices on Amazon: HG Mould Spray & Remover for Kitchen / Bathroom Tiles, Grout & Sealer 500ml (6 Sprays)
10. Dryzone Mould Remover (5L) Scrub-Free Formula
If the HG six-pack still isn’t enough for your needs, this 5-litre container from Dryzone is the ultimate professional-grade solution. While we’ve previously focused on the convenience of smaller spray bottles, this bulk liquid is designed for “whole house” treatments or major industrial projects.
It uses a high-strength, bleach-based formula that offers astonishing results in less than three minutes—significantly faster than the 30-minute wait time for the HG sprays. It is specifically built for large-scale applications on walls, ceilings, and floors, where a standard spray bottle would simply run out too fast.
Key Features
- Industrial Bulk Size: A massive 5-litre volume that is far more economical for treating entire rooms or commercial spaces.
- Ultra-Fast Results: Visual mould elimination begins in under 3 minutes, making it one of the fastest formulas on the market.
- Liquid Consistency: The low-viscosity liquid is perfect for pouring into a pressure sprayer to cover massive areas quickly.
- Two-Part System Potential: This is the “Eliminator” (Part 1). It is designed to be followed by the Dryzone Sanitiser to sterilize the area and prevent regrowth.+1
- Scrub-Free Power: Engineered to break down mould and mildew pigments on contact, requiring little to no physical agitation.
Pros
- Offers the absolute best value per litre compared to any of the HG packs we’ve discussed.
- Ideal for heavy infestations on painted walls and ceilings where standard cleaners might struggle.
- The liquid format penetrates deeply into porous surfaces to tackle embedded mould structures.
- Perfect for preparing surfaces before applying mould-resistant paint or specialist coatings.
Cons
- Requires a separate pump-action pressure sprayer for the best application over large areas.
- Very powerful chemical formula—full PPE (gloves, goggles, and a mask) is highly recommended.
- Not a foam, so it will run on vertical surfaces; you’ll need to manage drips with a microfibre cloth.
Why we recommend Dryzone Mould Remover (5L)
It is the only choice for massive jobs. If you have moved beyond “patch cleaning” and need to treat a whole basement or a severely affected ceiling, this 5L professional formula is significantly faster and more cost-effective than using multiple individual sprays.
Check prices on Amazon: Dryzone Mould Remover (5L) Scrub-Free Formula
Buyer’s Guide: Choosing the Right HG Mould Remover
When deciding between the various HG products we’ve explored—from the liquid triple packs to the heavy-duty Destroyer—the right choice depends entirely on where the mould is and how stubborn it has become.
1. Liquid Spray vs. Foam Spray
While both are effective, they behave very differently once they hit the surface:
- The Original Spray (Liquid): This is the “widespread” specialist. Because it is a thinner liquid, it is better at soaking deep into the microscopic pores of grout and the “grit” of older tiles. It’s the best choice for large flat areas like bathroom floors or kitchen worktops.
- The Foam Spray: This is the “vertical” specialist. The thick foam is designed to cling to walls, shower screens, and overhead joints. Because it doesn’t run down the wall as fast as the liquid, it stays in contact with the mould for longer, making it more effective for upright surfaces. It also has a milder scent and less splash-back.
2. When to Step Up to the “Destroyer.”
If you have already tried a standard cleaner and the black spots haven’t budged, the HG Mould Destroyer is the next logical step. It is essentially an “enhanced” version of the foam spray. It has a specialized grip formula that allows it to stay active for longer periods on the most stubborn infestations. If you are dealing with years of neglect or very deep-set black mould on silicone seals, the Destroyer is the one to reach for.
3. Cleaning vs. Prevention
It is important to remember the order of operations:
- Removers (Foam/Liquid/Destroyer): These are for reactive cleaning. They use bleaching agents to kill existing spores and lift stains.
- Preventor Spray: This is a proactive shield. It contains 99% natural ingredients and creates a clear barrier that keeps moisture out. Use this only after the area is completely clean and dry to stop the cycle of regrowth.
4. Bulk Buying: 3-Packs and 6-Packs
Choosing the pack size is about more than just a discount:
- The 3-Pack: Perfect for a standard deep clean of a single large bathroom and a kitchen. It ensures you have enough for a “double treatment” on stubborn spots.
- The 6-Pack: Best for landlords or homeowners tackling a whole house, including outdoor sheds, conservatories, and damp cellars.
HG Mould Removal Products – Quick Comparison
| # | Product | Best For | Consistency | Scent Strength |
|---|---|---|---|---|
| 1 | HG Mould Spray | Floors, grout “grit”, wide areas | Liquid | High |
| 2 | HG Foam Spray | Walls, shower seals, vertical tiles | Thick Foam | Moderate |
| 3 | HG Destroyer | Extreme / old black mould stains | Targeted Foam | Moderate |
| 4 | HG Preventor | Maintenance (post-clean) | Clear Liquid | Low / Natural |
Conclusion
Selecting the best HG mould remover comes down to matching the right format to your specific surface. While the classic liquid sprays are unbeatable for soaking deep into the grit of floor grout and flat seals, the foam and “Destroyer” options provide the essential cling required for vertical tiles and shower joints.
If you are handling a single bathroom, the three-packs are ideal, but the six-pack offers the ultimate value for whole-home restoration. By pairing these cleaners with the HG Preventor, you move from just cleaning to long-term protection.
Ready to reclaim your surfaces? Compare the above HG Mould Removers on Amazon and buy the best to make those black stains a thing of the past!
HG Mould Removers: Your Common Question Answered
Does an HG mould remover work?
Yes. It is one of the most effective cleaners on the market, using a powerful bleach-based formula to chemically break down and vanish black mould stains without the need for scrubbing.
What is the difference between HG Mould Spray and HG Mould Remover?
It usually comes down to consistency. The Mould Spray is a liquid that penetrates deep into the “grit” of porous grout, while the Mould Remover Foam is a thicker formula that clings to vertical walls and seals to prevent dripping.
Can I sleep in a room after using HG mould spray?
Only if the room has been thoroughly ventilated. The fumes are very strong; you should leave windows wide open and wait until the bleach scent has completely dissipated before sleeping there.
What surfaces can HG mould remover be used on?
It is ideal for tiles, silicone seals, plaster, and grout. It also works on outdoor surfaces like stone ornaments or cladding. Avoid using it on wood, metal, or coloured surfaces as it has a strong bleaching effect.
How long does HG mould remover take to work?
You will see visual results almost immediately, but it typically takes about 30 minutes to fully eliminate the spores and lift the deep black staining.
How long to leave HG mould spray?
Leave it to act for exactly 30 minutes. If you are using the Dryzone 5L we discussed earlier, that formula works even faster—often in under 3 minutes—but for HG, 30 minutes is the standard.
Does HG Mould Spray prevent mould regrowth?
No, the sprays are designed to kill and remove existing mould. To stop it from coming back, you should apply the HG Mould Preventor once the surface is clean and dry to create a protective barrier.
