I finally got round to trying to explore the way my ice box is made. I removed the Corrian counter top and began sawing into the top of the icebox
, to try to inspect the insulation
As any owner of a Down East boat will tell you, these vessels were made like Sherman Tanks
, which probably accounts for the company going bust after only eight years.
After hacking through an inch and a half of glassfibre and ply, (this is the galley
counter top we’re talking about, not the side of the hull!!), and still not reaching any insulation
, I realized there was no way I could remove the whole top. So I drilled some ½” holes through the rest of the top and finally stuck foam. Picture A shows the mess.
The drawings show the amount of space between the internal box and the enclosure sides. As you can see it ain’t much!
I therefore think the only way to increase the thickness is by padding the inside of the box and maybe also the outside of the enclosure on the three sides I can get to. Paul L mentions this method and I wonder if it would work for me?
Therefore please forgive the naive questions, from someone who has never done anything like this before.
1. Can I buy 1” thick sheets
of high quality insulation material and bond it to the inside of the box, then clad it with plastic or glass fibre sheet and seal the joints, to make a watertight false inner box?
2. Will it be worth doing the same on the three outer sides or the enclosure, which I can get to easily? The outer enclosure is ¾” ply and ¼” glass fibre.
This would increase the thickness by 2” on all four sides.
The box is 30” deep, much too deep for us to reach the bottom. So I would also propose to fill the bottom with 13” of insulation up to the lip, then seal it to the new sides.
In addition I could drill holes in the sides and top of the existing enclosure and squirt some expanding foam into any open crevices in the cavity.
We would loose about 1.5 cu ft doing all this, but it still leaves about 2.5 cu ft, which my wife reckons she can live with as a pure freezer
I can’t think of any other way to increase the insulation thickness, and would very much welcome constructive comments as to it’s validity.
Also, where could I get 1” insulation, and what is be the best type to buy for this application?