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Insulation or mass for a cold frame?

 
pollinator
Posts: 1559
Location: Denver, CO
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I am building a cold frame out of brick. Would it be better to insulate the inside of the frame, or leave the insulation off to gain the thermal mass advantage?
 
Posts: 171
Location: Deutschland (germany)
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well I'm about to build a cold frame too. My plan was to insulate the outside of the northern wall.
I found this article about building solar greenhouses very inspiring. My coldframe will be a miniature version of this greenhouse, but probably without the underground heat exchange system.
 
Posts: 554
Location: Asheville NC
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I think it would perform best if detailed like a passive solar home design. Include some thermal mass but put insulation to the outside of it.
 
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And plan for a little extra room and stash some water in there, like 2 liter bottles, or gallon milk jugs. Stores more heat than masonary per pound and per volume (I think...).

troy
 
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