/diy/ - Do It Yourself

>>107389
Heres a door framing. Double up your 2x4s with one under the header on each side. Use 2x8s for the header (double). For a window, just fill in the bottom part with 2x4s 16" oc like the rest of your walls. Buy your door and window first so you can make the openings the right size 1/4" bigger and use shims around the sides to square them.

You asked about fastening to the cement too. I got a cheap hammer drill for < $20 and it works great, less than renting a good one for a day. concrete anchors are the way to go.