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insulation under RMH bench

 
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does anyone have any advise for insulating under an outdoor RMH bench. how thick and what materials are best?
 
Posts: 65
Location: NE PA zone 6
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Hi Ronald,



The whole video is great but around the 2:55 mark will give you a better idea of good insulating materials and relative thicknesses.

"Best material" is often related to the circumstance and application.

 
pollinator
Posts: 345
Location: south-central ME, USA - zone 5a/4b
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I can't tell you what worked for me since I didn't insulate at all, but I can tell you that you definitely should insulate

What I'm planning for my rebuild this summer is a layer of aluminum foil and some perlite under the burn tunnel, then foil and bubblewrap under the actual bench (min 4" cob between bubblewrap and duct). No idea how the bubblewrap will do though.
 
gardener
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Location: latitude 47 N.W. montana zone 6A
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Hi Ronald; I used a 4" layer of cob heavy with straw on the ground before putting my duct work down. This seems to have worked well for me in the greenhouse, i imagine that you could put rigid foam insulation down first if you wanted to.
 
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