i splashed out and bought an expensive 24' x 12' cedar greenhouse on a brick base and i've had nothing but problems with it. i have gaping holes in the automatic roof vents and around the doors which i'm told by the manufacturer they can do nothing about. it also produces a huge amount of condensation which i'm sure will rot the cedar in time and i'm told this also is normal. my main problem though is heating - the heater provided had to be fixed by an electrician initially as wasn't working at all and it now only blows out cold air. it also sits under the roof vent so even if it produced heat, the heat would just go out of the roof. i've had to disconnect the clips so that the roof vent doesn't open should it decide to produce any heat! i wonder if anybody else has had similar problems, what can be done about the gaps and, mainly, can anybody suggest an efficient form of heating. i've lost so many plants already that even having spent a lot of money, i'm still bringing my plants into the house to protect them!
