Lavenderfoam

In response to NKHAN's post about HCFC's everyone should know that in the United States the use of HFC blowing agents was banned by the Montreal protocol. All closed cell spray foams use a zero ozone depleting blowing agent 245fa by Honeywell. This blowing agents has no adverse effects on the ozone, unlike the water blown spray foams that use CO2 as the blowing agent. I would also like it to be known that the use of PBDE fire retardents is not used by any of the major manufacture's of spray foam today.

When a life cycle analyst was completed on polyurethan spray foam it was determine that the embodied energy of SPF was higher than traditional air permeable insulation (fiberglass, cellulose, recycled blue jeans just to name a few low quality insulations), but it the amount of energy it saved every year, buy approximately the 3rd year in use, the SPF had half as much total energy useage (embodied energy + energy needed to heat and cool a building) compared to traditional air permeable insulations.

The choice is simple, use a small abount of pertoleum based insulation now and safe enormous amounts of fossil fules later, or use a low quality insulation such as fiberglass today and burn unneeded amounts of natural gas or coal tomorrow and in 15 years people will have to rebuild the structure because of all the mold that is allowed to grow in the wet, ineffectively insulated walls.

Oh ya, I almost forget, can anyone name which car recieved the award for the smallest carbon foot print?

What about recycled polyols? Also I have heard the bio-based polyols require more petroleum to get the same amount finished product. This requires more barrels and more freight to transport the materials resulting in an increase in the total amount of petro used.