Newbie in PA starting over with coop, and I need help!

[animalover]

I was only going to have 2 chickens, and since I have little construction experience and no one to help me, I bought a coop on ebay.
http://cgi.ebay.com/Chicken-Poultry...-Cage-002-/110549323314?pt=LH_DefaultDomain_0

I now have 3 full size hens, and 2 Silkies, and my coop is woefully inadequate. I am happy with the run - it is a 7' x 7' dog kennel fortified with hardware cloth and a galvanized fencing roof. I was trying to figure out if I could salvage the coop I have, but I think I will try to build a new one. I have spent hours and hours on here, and have a decent plan in mind for building a simple coop, with adequate ventilation and lighting. I need to start and finish in 7 days while my husband is out of town next week. (He would not be supportive). There is a Habitat Rehab in a city an hour away, and nothing on craigslist (I have been searching for weeks), so I may just end up at Lowe's or Home Depot. What kind of wood should I use - I know there is OSB, sheathing, luan. What thickness should I get? I have a power drill, and I guess I need to get some kind of electric saw. Any advice would be greatly appreciated! I plan to take pictures of my progress.

 

[elmo]

Did you know that Home Depot and Lowes will do rough cuts for you? It's free for a certain number (can't remember), but after that it's only a small amount per cut. I don't use a power saw, so I used this service when I built my winter coop. I still used a handsaw for cutting the framing boards, but it was very useful not to have to cut a sheet of plywood by hand!

I used something called T1-11 siding for the outside of the coop, then plain plywood for the inside wall. There's a picture on my BYC page.

 

[Gallo del Cielo]

Good for you animalover! elmo had a good suggestion, let the store cut the materials that come in 4' X 8' sheets, cut the rest at home. Look at my BYC page to see how to connect the framing pieces together. Use screws instead of nails and clamps to hold it together while your fastening it. If you have any problems along the way, post pics and questions and we'll help you out. Good luck!