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Greenhouse algae and mould hard to remove.

Purchase my first used greenhouse from 1970s bought from my friend. It is in a good condition but the glass I am very afraid to break it when to cleaning the moulds and green algae is on the glass it is not easy to remove as what I thought. Is there any removal chemical on Amazon make easy to remove without crack or breaking?



  • nutcutletnutcutlet PeterboroughPosts: 26,374
    I find the kitchen sponges and the washing up liquid work well
  • nutcutlet said:
    I find the kitchen sponges and the washing up liquid work well
    I will try that with fairy liquid. Thanks
  • Pete.8Pete.8 Billericay, EssexPosts: 8,528
    I agree with nut - also the side of an old credit card works really well for the stubborn bits
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  • LynLyn DevonPosts: 19,895
    Cleaning on a rainy day helps or when you’ve had rain, algae is softer then.  I use pressure washer. 
    Gardening on the wild, windy west side of Dartmoor. 

  • BenCottoBenCotto RutlandPosts: 3,607
    We had a bit of mould in the bathroom and the supermarket brands of mould remover were pretty useless. However HG Mould remover worked fantastically. You might want to try in the greenhouse if you’re determined to remove all traces of mould.
  • cornellycornelly Posts: 962
    I use Armillatox to clean algae, banned for on the garden use but for cleaning glasshouse,s and paths patios etc I find very good.
  • KiliKili Posts: 858
    Cheap supermarket bleach washed on and left overnight will kill the mould- then hose off. :)

    'The power of accurate observation .... is commonly called cynicism by those that have not got it.

    George Bernard Shaw'

  • ValleysgirlValleysgirl Wales Posts: 223
    All good recommendations from fellow gardeners above but can I suggest an Old Toothbrush for in between the panes of glass works a treat to get out all the yucky green algae along with just Water/washing up liquid solution, works a treat flyingpostman.
  • wild edgeswild edges The north west of south east WalesPosts: 7,514
    I bought a sponge from the car parts place that is basically a huge version of a kitchen sponge with a nice rough side to it. Makes short work of any green stuff on glass so I hate to think what it would do to car paintwork. The best part is that it's got a deep slot cut into the soft side so you can wrap it around a rake or brush head and use it to clean the roof glass from the ground.

    Given the choice though I'd use the pressure washer as the lazy (and much messier) option.
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  • K67K67 Leicestershire Posts: 2,507
    My son in law cleaned ours with his window cleaning  brush and pole and pure water with good results
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