I have used treated roofing slats and 75x20mm treated wood, availble cheap
from Wicks, to make simple benches. These can be taken out in the summer
what I want to grow tomatoes and cucumbers etc.


I used the same for the staging in Joan's greenhouse. I used the same
throughout, legs, bearers and slats. As I didn't fancy hammering in nails in
the vicinity of all the glass ;-) and as I didn't fancy drilling and
screwing all the shelf slats, I glued them down with an ordinary mastic :-))
3 years later, no problem :-))

Mike