Performance Factor |
PolySteel |
Wood |
| 1. Wall
Construction |
solid concrete |
hollow cavities |
| 2. R-Value of
Insulation |
R-20 |
R-11 or R-19 |
| 3. Thermal Mass
(lbs/ft²) |
56 lbs/ft² |
2 lbs/ft² |
| 4. Typical Air Leakage |
0.1 ACH
(Air Changes per Hour) |
0.4 ACH |
5. Effective R-Value of
Wall
(Resulting from 1,2, & 3 above) |
R-30 to 50 |
R-10 to 17 |
6. Estimated Annual
Heating & Cooling Costs
(USA Average) |
less than $1,200 |
$2,400 |
| 7. Energy Warrantee |
30% savings
(Over 2x6 & R-19 Insulation) |
none |
8. Bearing Capacity (Top
of Wall)
(plf = pounds per linear foot) |
27,000 plf |
4,000 plf |
9. Wind Capacity
(Design Wind Pressure lbs/ft²) |
200 mph
(175 lbs/ft²) |
130 mph
(72 lbs/ft²) |
| 10. Fire Rating of Wall |
four hours |
not rated |
| 11. Food for Termites |
no |
yes |
| 12. Bullet Resistant |
yes |
no |
| 13. Building Code
Requirements |
exceeds codes |
meets codes |
| 14. Environmental
Advantages |
saves trees and energy |
none |
15. Outside Noise
Reduction
(STC= Sound Transmission Control) |
STC 48 |
STC 37 |
| 16. Reduces Pollen Inside
Home |
yes |
no |
| 17. Overall Inside
Comfort |
far superior |
ok |
| 18. Homeowner's Insurance
Rates |
10% - 25% lower rates
(with many companies) |
standard rates |
| 19. Cost of Average Home |
$103,000 - $104,000 |
$100,000 |
| 20. Qualifies for Larger
Mortgage |
yes |
no |
Score: |
PolySteel-19 |
wood-1 |
