Quote:
Originally Posted by Shane826
Keep in mind the hole in the ceiling isn’t 14”x14”. It’s a lot bigger so the control unit is recessed up into the A/C riser.
That said, if you did one behind the bag seal the rear of the A/C cutout is like 6”-8” forward of that so it might be a bit redundant at that point.
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The number and placements of the arch or arches would depend solely on the particular roof. All I'm proposing is a theory for a possible solution.
One thing that should be considered is that a roof that has collapsed probably ha delamination between the foam and the sheet metal.
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