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Greenhouse (yes, another one...)

AstraeusAstraeus Posts: 332
edited May 2021 in Tools and techniques
I am choosing options for our Elite Kensington 4x8 and have a couple of questions if I may.

The greenhouse comes with one roof vent and one louvre as standard. It is 8' long so there are four panes. Is it worth adding a second louvre and second roof vent or would that be overkill for this size? Or is it a case of 'the more ventilation, the better'?




  • AnniDAnniD Posts: 11,429
    I would definitely go for as much ventilation as you can  :)
  • steephillsteephill Posts: 2,680
    From a web search:-
    Roof and side vents on conventional greenhouses need to be large enough to get good air movement. The American Society of Agricultural Engineers recommends that the combined sidewall vent area should equal the combined ridge vent area and each should be 15 to 20% of the floor area.
    So an 8x4=32 sq ft, 15%=4.8sq ft 20%=6.4sq ft From memory windows are 2x2ft so one window vent is slightly below minimum requirement.
  • PosyPosy Posts: 3,601
    I would have as many vents as you can. My greenhouse has two in the roof and it gets incredibly hot.
  • fidgetbonesfidgetbones Posts: 16,695
    Get the autovents fitted if you can. Mine open up quite early in the summer. I also open the door and the louvre at the back to give further airflow through the day.
  • AstraeusAstraeus Posts: 332
    Thanks folks.

    Can anyone point me in the direction of a supplier of Rhino greenhouses that impressed them? Several websites don't offer the correct or complete customisation options and other retailers simply aren't getting back to me.
  • AnniDAnniD Posts: 11,429
    edited May 2021
    I think @Pete.8 has a Rhino greenhouse, he may be able to help. 
  • Pete.8Pete.8 Posts: 10,294
    As far as I know, they're only sold by Greenhouses Direct which is where I got mine - this is the model and colour I got-
    and I'm very happy with it
    I have 2 levels of aluminium staging on one side which are really robust.

    I also bought an aluminium framed potting bench with wooden slats - which is absolutely hopeless. The wooden slats are not held in place by anything, so they move around and drop out.

    Aside from that, it's an excellent greenhouse
    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
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