| I was trying to find something to answer that properly, but was unable at this time. I personally would go with no less than 1" thick, especially in the garage area. Make sure to but all lengths together and tape them with proper tape. The best way to insulate the fittings is with insulation fitting covers stuffed with loose insulation, but I am sure a more economical way that will not look as pretty can be designed.
This is why your boiler short cycles. Steam cools of quite quickly when open to the elements, ie: no insulation. __________________
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Mark |