Sorry to ask more dumb questions, but...
We've ripped out the old
freezer and reefer boxes, and now we have a big empty hole lined with
marine plywood (see below).
Now, one idea I had been toying with was to build the new box and wrap it in
insulation then place it in the hole. Not possible.
New plan is to lay down layers of
insulation (Polyisocianate), working our way in from the sides till we have the right shape of the box, then assemble in place
panels of FRP (thinking of getting 3/8" FRP
panels from rParts for this purpose) and
epoxy them together.
I have 2 or 3 questions -
1) what do I start with as a vapor barrier against the
wood before I lay down the first layer of insulation? I'll be using polyIso (pink board) since the Aerogel idea fell through when I found out the cost. So I need some layer of plastic of some kind of foil between the
wood and the first layer of insulation. What should that be made of (tyvek maybe?)?
2) what do I use to glue each layer together? I know I have to use something to glue each layer of insulation to the next - I've read something people use 3M 77
adhesive spray, someone else said they use contact cement, which seems very messy. What is the best way to do this?
3) do I need to seal the ends of each sheet of insulation? For example, by wrapping the edges with foil tape, to prevent moisture from entering? I think I read this somewhere, but I am not sure. Is this needed?
Thank you in advance!
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