thanks agnut for your post . we have a small green house I have for some time been thinking about building a bigger one so we could sale vegs plants just so we could add to are silver and help us grow more food in colder parts of the year . now I need to look for some old windows I guess I will be doing some horse trading with someone in the next week are so for the glass to add on .... be safe one and all mick ... ps the world is not getting any safer nor do I see it being any safer in the years to come