Insulating Concrete Forms Performance Characteristics
|
ICF
Performance Characteristics |
|||
|
|
Conventional Wood
|
ICF
Construction |
Comparison |
|
Building
Life Expectancy |
80-85
years |
200+
years |
2-3x
longer |
|
Insulation
type |
Fiberglass
R-19 |
Expanded
Polystyrene |
higher
efficiency |
|
R-Value
of wall assembly |
R-17 |
R-20
- R-25 |
30%
higher |
|
Air
leakage |
high |
near-zero |
virtually
leakproof |
|
Air
changes due to leakage |
8
times per day |
2
times per day |
4x
better |
|
Mass
of 8 ft wall without coverings |
32
lbs/ft |
440
lbs/ft |
14x
more |
|
Heat
reservoir |
9.2
BTU/hr/deg F |
93.0
BTU/hr/deg F |
10x
greater |
|
Heating/cooling
cost |
$820/year |
$240/year |
3x
better |
|
Sum
of toxicity factors in fire |
50 |
less
than 10 |
5x
safer |
|
Smoke
generated |
high |
less
than 170 |
superior |
|
Sound
insulating qualities |
STC
32 |
STC
48 |
virtually
soundproof |
|
Environmental
friendliness |
poor |
excellent |
superior |
|
Reference: adapted
from Building Technology |
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Canadian Portland Cement
Association (CPCA)
60 Queen Street, Ste. 1500
Ottawa, ON K1P 5Y7, Canada
613-236-9471 Fax 613-563-4498