2020 XPS foam build

[Kbybee]

Year Built2020
Shaper
Manufacturer
Model Name
LocationOregon

Building my first board out of XPS pink foam. 2 questions so far:

1. The more I read I keep seeing XPS delaminates easier than EPS. Is this build a mistake or is there something I can do to help prevent the fiberglass from delam?

2. Since this is a closed cell foam, are vent plugs still necessary to install?

Thanks for the advice. Any other helpful tips are welcomed

[stoneburner]

Is this a bump?
Happy to respond if somebody actually needs current input.

[stoneburner]

Start here. If there is genuine interest, I will add more…

9' longboard out of XPS foam

UncleG, I shape the XPS with a surform and 60 grit.  I final sand to 100 grit.  I then vacuum foam dust off surface.  Then I use a modified TopFlite Woodpecker Tool (doubled the number of tynes).  I perforate the shaped foam with the WP tool.  I pre-seal with a thin layer of epoxy.  Then sand to 150 grit. I laminate using epoxy with opaque white pigment (to reflect solar heat).  I don’t use less than 1.55 pcf XPS.  Saving my higher density XPS for when I have my new designs well dialed in. Th…