My lottie partner's and my OHs have been very busy restoring and revamping an old shed for our use on the lottie. There are no windows, and so the rotten roof has been replaced by a lovely mixture consisting of PVC corrugagted sheeting, two shower screens and a double glazed window, all of which means that we now have light! My question is,would there be enough light to use it as a cold greenhouse? There is a nice new long shelf about 2ft. away from our lovely see through roof, and I can just visualise lots of seed trays on there next spring, freeing up my window sills at home. Am I being sensible?