Thanks to everyone who helped! Including our lawyer neighbor who gave us the safety glass for FREE (one of his clients paid him for his services in safety glass...lucky us).Greenhouse as seen from my mum-in-law's back garden.
Since these photos were taken we've almost finished the wood trim and have harvested a ton of spaghetti squash and zuchs from the roof top garden. And even now we're still harvesting; the roof has been surprisingly immune to frost. Even tomatoes are ripening up there. Yay for microclimates!