Hello,

I am about to build an enclosed porch on the back of my house. I want to come out 20 feet with a flat slope roof. How do I make rafters this long? Do I double up wood for each rafter to extend it that long?

Also, Can I use 2 x 6 or do I need larger ones like 2 x 8 for the rafter boards?

Thanks for your help!

Warren

Porch Roof Question