add a room
I am not quite sure what you mean by an add-a-room that is angled out. That being said, I think that I can still give you some feedback about customizing an add-a-room that might help you. I live in Alberta but I think the same would apply in the US. I had my add-a-room custom made by an upholsterer. My upholsterer does work on home furniture, vinyl tops for convertibles, boats, etc. and all kinds of things for RVs (internal and external). I brought in a page from the Camper's World catalogue showing their off-the-shelf add-a-room to my upholsterer as the template but I requested it be customized to include an attached floor and also a skirt that was attached from the bottom of the motorhome to the vinyl floor where it was attached. My goal was to have a totally contained room so that my cats could go out into the room and I would not lose them. I have been extremely pleased with the results and had many, many people, when I was in the US this winter, ask about it once they saw it. I think that it is great and it has perfectly fit the purpose. It took awhile to get the hang of putting it up but it is well worth it. I find that I also stay out later in the evening because I have the screen room. My cats absolutely love it and were very disappointed when conditions were such that I didn't put it up. I did not have the privacy panels made for mine due to both weight and cost. I think that when privacy panels are used to form a complete room rather than simply a screen room, the perils about carbon dioxide become more of a real issue. Both my furnace and my hot water vents were on the screen room side but the air ventilation was sufficient to prevent carbon dioxide issues.
I hope that this information is helpful to you.
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