[newdawn47]

Hello,
I have been reading the post by Spider with interest. We cant afford a greenhouse so we intend to build one, by putting down a base of concrete and building maybe four blocks high. We have loads of glass and timber. My question is what should we use on the roof, glass or clear corrugate. I would like to raise seeds for summer flowers, etc. Will I be successful with this kind of structure?

[Geranimojess]

Corrugate will suffice if you seal the Ridges with expanding Foam .you can also use Glass but that entails having to construct Frames,both will do the same job.good luck in whatever you choose.
Dont forget a few Photos when its done.