I priced underdeck ceilings at $12/sq ft installed. That is just way more than I am willing to pay, and I am just not that fussy, so I am going to do my own under deck ceiling using barn steel roofing panels.
I found several people doing this on youtube. Here is a sample of one: https://www.youtube.com/watch?v=-9WUiPOl9co
The existing deck is 12'x36' and I will be sloping the short side.
Right now, my intention is to:
- buy 3'x12' 26 gauge roofing panels from a big box store,
- Screw progressively thicker strips of wood to the joists (to provide slope),
- Screw the roofing panels to the strips of wood,
- Use a gutter to catch the water at the lower end.
My questions are:
- What is the ideal minimum slope? I am asking because I don't just want the minimum slope. I have plenty of headroom, so I can afford a couple of extra inches, but I don't want to slope more then what has a real advantage.
- How far apart should the strips of wood be such that the roofing panels will not sag over time?
- Do you have any other tips?