rruff wrote:IME PL300 isn't nearly as strong. I have no idea why the manufacturer advises against PLP for foam, since I've never heard of anyone having an issue with it.
KCStudly wrote:Either method troweled or spread on will likely run into curing issues due to creating and airtight seal around the perimeter before the center has cured. (I used kerf chimneys in my foam to combat this.)
KCStudly wrote:On my hatch and front radius, where I laminated two layers of 3/4 thk foam on to the inner plywood skin, not only did I kerf the tighter radii of the profile to about 9/16 deep (made saw cut reliefs to allow it to bend), I also kerfed 1/4 deep everywhere else so that that the troweled PL was fully ventilated.
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