Roof observatory
Hi Gary I looked into doing this when I did my renovations and I encountered too many problems. Apart from the vibrations ( the pier woold have to go all the way to the ground) ,there was the issue of the weight. I needed a whole new truss design to hold the weight. Secondly the water proofing was going to be difficult. The cover on the roof had to be of certain specification to be able to withstand strong winds as well as heavy rain this would make it heavy an a little impractical. The heat was also a factor. I'm summer you get the heat from thereof cavity and in winter from the heating. It can be done but for me it was am issue of money. I ended up building an observatory in the back yard for a fraction of the price.
Regards Cristian
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