observatory shed

[longinthetooth]

Hi folks. I've not been on here or along to meetings for some time - something I hope to remedy this coming year!
I want to build or buy a roll on roll off roof shed. I have seen Alexanders and Taylors ready mades on the web and apart from being expensive the delivery charges are (excuse the pun) "astronomical"! Does anyone have experience in building a modified shed that I could tap into? My main issues are understanding how the roof rolls and how the building can be made weatherproof despite having what is basically a detachable roof!
I have seen many amateur builds on the web but these details are still hazy in my mind.
Any help appreciated!
John B

[Cosmic]

HI John
you're welcome to see mine, roll on roll off and waterproof.
Geoff

[longinthetooth]

Thanks for the offer Cosmic. I'd be happy to take you up on it!
Cheers
JohnB