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✨ Refresh your outdoors with HG – because first impressions last! 🌿
HG Algae and Mould Remover is a potent 1L biocide liquid designed to eradicate algae, mould, mildew, and lichen from a wide range of outdoor surfaces. Covering up to 200m² per application, it penetrates deeply to deliver visible results within 36 hours while being safe for plants when diluted. Ideal for patios, roofs, walls, and more, it not only cleans but also slows regrowth, ensuring your exterior spaces stay fresh and slip-free longer.
| ASIN | B000IU3VTE |
| ASIN | B000IU3VTE |
| Active Ingredients | green algae |
| Best Sellers Rank | 4,143 in Grocery ( See Top 100 in Grocery ) 30 in Moss Control 1,564 in Home Care & Cleaning |
| Brand Name | HG |
| Coverage | Broad-spectrum coverage for moss, algae, and mould |
| Customer Reviews | 4.2 4.2 out of 5 stars (378) |
| Customer reviews | 4.2 4.2 out of 5 stars (378) |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Global Trade Identification Number | 08711577002916 |
| Included Components | HG Algae and Mould Remove |
| Is discontinued by manufacturer | No |
| Item Form | Liquid |
| Item Weight | 1.87 Pounds |
| Item model number | 181100106 |
| Liquid Volume | 1000 Millilitres |
| Manufacturer | HG Hagesan (UK) Ltd |
| Manufacturer | HG Hagesan (UK) Ltd |
| Model Number | 181100106 |
| Part Number | 181100106 |
| Product Dimensions | 8.3 x 8.3 x 26.1 cm; 848.22 g |
| Unit Count | 1000.0 millilitre |
M**K
Algae remover from masonry and paths
This really does work, I diluted it so it will last a good while. I had green patches on a wall and sprayed it and two days later it looked fine
J**M
Does a good job of removing algae, but not a dedicated "cleaner"
Decent product, our patio gets so slippery with algae and surface dirt it's a real hazard. This product makes the surface safe again. I wouldn't say it's the best cleaner as the patio still looks a bit stained, but I will find something else for that. Priority was to get rid of the slipperiness.
C**N
Works great.
I used this to clean up my gran's headstone as my mum and aunt were going to buy a new one and I thought I'd give this a go first. After scrubbing with a brush the headstone looks like it's brand new and has saved my mum and aunt the hassle of getting a whole new headstone.
C**S
Works wel
Why did you choose this product over others?: Works well, better if you do it on a dry spell so it has longer to burn into the algae.
C**9
Great product.
I haven't tried this yet but is was recommended to me by a friend and they told me how good it is so I am looking forward to using it on my patio.
P**N
Green algae on patio York stone slabs
I applied the algae remover diluted to manufacturers suggestion via my watering can sprinkler. It was quite dark green in parts. After 2-3 days it was lighter but still green. So I repeated the process. Have to be sure get 3 dry days in a row. Again better but definitely not gone. Am on 3rd application to date. Also tried it on front path which was lightly affected by moss & algae. Made no difference. Used whole bottle. Will buy something else in the hope it works better. Maybe this stuff is for light areas of algae? Didn’t work for me.
A**H
Mould removal
Good product took some time to arrive
A**N
Better than expected
Reading the other reviews you wouldn't think this would work well however i used it on my stone flags with good results. Definitely cleaner and has killed the algae . First i treated with ratio as described so 1:20, then i think i used 1:10 for flags with excessive algae. I know i'll have to retreat in 6 months or so but will do nicely for now. also used on a fence but probs needs another spray as it hasnt all cleared..
Trustpilot
1 day ago
3 weeks ago