Join Date: Mar 2008
Location: Anacortes PNW
Thanked 125 Times in 113 Posts
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Nice project, looks good.
I did this for my last boat many years ago and learned a few things:
First I did 2 layers of acrylic, ostensibly for insulation like a double pained window. I quickly had to remove the inside layer as it became impossible to see through because of condensation. Drilling several holes in inside layer to let it "breathe" also didn't work. Perhaps if it had been better sealed and I stapled a package of silica gel between....
I also found that smoke plastic didn't deter viewers/voyeurs very much. If it's light below, they can see in. My solution was to put 4 one inch velcro tabs on it, (one per corner) and made up a piece of fabric to velcro in place as a curtain. The curtain could be made of layers of heavy polar fleece or wool for a modicum of insulation.
Why use expensive Lexan? Acrylic is much cheaper, plenty strong for your application, easier to work with (doesn't shatter as easily) and isn't as chemically sensitive as Lexan (Windex instantly ruins Lexan for example).
I loved my transparent hatch. It was amazing how much extra light it let through. Nice project!
I have a sauna on my boat, therefore I win.
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