Quote:
Originally Posted by babock
I was able to get the roof plan on mine. The spacing varies as they start at different intervals aroun AC and fan openings. Get a good stud detector and you will find them. Mine were pretty much on 16" centers.
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A good stud finder won't find the joists in a Rockwood roof, because there aren't any. Unless you mount them on either side of the AC, you're screwing it into plywood.
From correspondence with a Rockwood rep, "We do not place any joists on the roof other than to brace the AC. There is 3 ½” block foam all throughout the roof and that is what gives it its strength (fully walkable) while also keeping it lightweight."
That statement is corroborated by the image below, snipped from a
promotional video on the Forest River web site. You'll see aluminum crossbeams only where an AC unit could be mounted in the center. (The roof penetrations haven't been cut out yet, in the video.)
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TV: 2021 Ford F-150 4WD XLT Crew w/ 3.5L EB & HDPP, payload: 2,416#.
RV: 2020 Rockwood Mini-Lite 2507S, Propride 3P hitch w/ 1400# spring bars
Camping nights: 2021, 52; 2022, 99; 2023, 88; 2024, TBD (Est: 80+)
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