An 8' x 8' x 10' Low-Cost Cooler
These plans are a great example of how to use fiberglass in a cooler. UK did a great job drawing up and breaking down this cooler into detailed instructions. For any that are going to use these instructions we recommend using at least another 3/4 inches of rigid foam insulation for a total of at least 1 1/2 inches. This can be added to the outside or inside, whichever way you go make sure that you seal the seams completely to stop the moisture from getting into that fiberglass.
**See article about vapor barrier under "Fiberglass" in "Insulation"