First green house

Looking good, concerned about only a single vent on the side I can see ... 4 vents would be better in a greenhouse that size I think?

 

wow, that's awesome!

 

Lol thank you when I start something I like to get it finished

I have one window each side at the min I am looking at putting a window in the back at the bottom for flow but no need till spring it's mainly to over winter my bananas and bits at the min
Do you think one more will be enough

Thank you very much

 

One for you jenny

If you can make out the cat through the rain

 

Lucky lass ......
- what's her name ?
Jenny

 

Trouble, particularly with smaller greenhouses, is getting rid of heat in summer. Normal solution is to open the doors, but what that creates is a draught, and that stresses the plants (causing them to transpire). It is better to use convection for cooling (although in mid summer throw-open-the-door is still required!)

To shift the heat from the top of the greenhouse requires enough roof vents, and then some loewr-down louvres to let air in, and then rising heat will do the rest.

My aim would be to have one top vent per 3' length of greenhouse - so a 12' greenhouse would have 4 vents, 2 on each side (staggered, rather than opposite each other)

They can be opened one notch in winter to get some air movement, without allowing the outside cold wind to enter much, which helps with damp / moulds.