Hobby electrician
· E
· 15 421 posts
If the trusses are set at 120 cc, there will be a bit too much space between the screws for the ceiling, plus you get room for electricity and other things.
Another advantage is that you can attach the plastic to the frame and then either install a 45 (for more insulation) or spacing (28-70). In both cases, you have the opportunity to run electricity and water in that space, thus avoiding the need to make holes everywhere in the plastic.!!
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