Greenhouse: Bubble Wrap the Greenhouse for Insulation - PART 2, 1 by joannabanana

joannabanana wrote:
Hi Amos,

My GH is a Easy Grow 8'X12' from Costco

I use 2 heaters. One Little Buddy Mr. Heater (propane) http://www.mrheater.com/product.aspx?catid=41&id=24 and one Caframo True North http://www.caframo.com/hearth/hearth_products_acspaceheaters... electric heat. I have a 30 lbs propane tank outside the GH with a hose running to the heater. I need the combination for our climate. Last year we had several days with high temps of -25ºC (-13ºF) and night lows of -30ºC (-22ºF). I also have a small fan up high for heat/air circulation It is difficult to control the heatloss with those temperatures. On extreme cold nights I cover the GH with bedspreads. Your panel materials, & outside "low temperatures are vital in determining the size (BTU) of heater that you will require.

This is the best resource to figure out the BTU heater you would need for your area. http://www.littlegreenhouse.com/heat-calc.shtml

Bubblewrap: I called a few shipping supply wholesalers and bought a 250' roll of 1" bubbles for $44. I cut it to fit the panels and used shipping tape to attach it to the GH. Bubbles facing the panels. I reused the BW from last year.

This message was edited Feb 24, 2010 12:32 PM