Hello,

Thank you for your prompt reply.

Would it be ok to insert a room within what I've already created? Please see GDocs link.
https://drive.google.com/file/d/0BznwZl ... sp=sharing

Originally, I asked the question because, as you can see from the images below, for a newbie, I'm trying to create something rather advanced. Have you any advice with this please? I've read the relevant PDF tutorial for sloping roofs and ceilings, dormers.

https://drive.google.com/file/d/0BznwZl ... sp=sharing

Cheers, Guy.