Ì know the feeling. The last week I have doing small hings on the obsy on and off during the evenings dry spells. But I could also do with some dry days, especially since I need do to some painting of my metal bits and after that test fitting the mount and scope to see how much clearance I have left in the back wall, so I can design and construct this. The balcony roofing is soaking wet each day I have been working up there, so I have to mind my steps in order to avoid wet feet. I will put in a water barrier in the floor to prevent moisture from the balcony roofing to come up into the observatory structure. God luck with your build.