Need someones help on the proper steps of walling up the space after removing a sliding door. So I have a 5 foot sliding door in the back of my house that Im going to be removing and adding a wall. Removing the door is not the problem. I need to know the steps to build up the wall. I know that Im going to be to get the outer wall bricked up but Im going to wait until the spring to do that. I know that I remove the sliding door and continue the wall 16" center 2×4 across the opening. but what do I cover the outside of the 2×4s with ?? what size ply am I using?? weather proofing?? Insulation ?? Calking ?? If someone could help me out that would be great!