front porch

I built the front porch on my house 5 almost 6 years ago when I built it I used paneling for the inside walls. After the 1st. winter it all warped and pulled away from the studs looked  terrible. This is the new walls I built all parts are made of 2x4's resawn and planed down to 3/8 in thickness and trimmed to 3" in width.. I  sanded each peice and painted both sides with 2 coats . I caulked both top and bottom and any gaps that where visible Each peice has 5 screws holding it to the wall I really don't think this is coming down anytime soon..............................Rick