Foam
Type
Previous
amount
of
HCFC
(
mmlb)
HCFC
Transitional
Status
SNAP
End­
Use
Application
141b
22
142b
Current
Status
Leading
Alternative(
s)
Remaining
Obstacles
Rigid
Polyurethane
and
Polyisocyanurate
Laminated
Boardstock
Roof
and
wall
insulation
71.5
Transition
completed
Hydrocarbons
None
Rigid
Polyurethane
Appliance
Refrigerators
and
freezers
23.5
3.0
0.25
Transition
completed
HFC­
245fa
None
Spray
 
Roofing
13.8
No
technical
barriers
Partial
transition
completed
HFC­
245fa/
CO2(
water)
Completion
of
remaining
field
trials
Spray
 
Wall
insulation
2.0
No
significant
remaining
technical
barriers
HFC­
245fa/
CO2(
water)
Completion
of
field
trials
&
testing
Spray
 
Cold
Storage
0.4
No
reported
technical
barriers
HFC­
245fa/
CO2(
water)
Completion
of
field
trials
&
testing
Spray
 
Tanks
&
Pipes
4.0
No
reported
technical
barriers
HFC­
245fa/
CO2(
water)
Completion
of
field
trials
&
testing
Spray
­
Marine
0.5
No
reported
technical
barriers
HFC­
245fa/
CO2(
water)
Completion
of
field
trials
&
testing
Spray
 
Transportation
0.1
No
reported
technical
barriers
HFC­
245fa/
CO2(
water)
Completion
of
field
trials
&
testing
Commercial
Refrigeration
1.25
1.5
0.25
No
technical
barriers
Partial
transition
completed
for
HCFC­

141b
HFC­
245fa/
CO2(
water)
None,
although
cost
will
probably
encourage
on­
going
HCFC­
22
and
­
142b
use
One
Component
Foams
­
0.25
0.25
N
o
significant
phaseout
progress
as
yet
HFC­
134a
&
Hydrocarbons
Flammability
issues
Can
sizes
and
output
HFC
emissions
Rigid
Polyurethane
Spray
and
Commercial
Refrigeration
and
Sandwich
Panels
Sandwich
panels:

discontinuous
0.6
0.25
No
reported
technical
barriers.
Transition
broadly
completed
for
HCFC­
141b
HFC­
245fa/
CO2(
water)
Processing
differences
with
lower­
boiling
HFC
Sandwich
panels:

continuous
1.25
0.25
No
reported
technical
barriers.
Transition
broadly
completed
for
HCFC­
141b
HFC­
245fa/
CO2
(
water)
None,
although
cost
will
probably
encourage
on­
going
HCFC­
142b
use
Rigid
Polyurethane
Slabstock
and
Others
Pipe
insulation
etc.
3.0
No
remaining
technical
barriers.
Transition
broadly
completed
for
HCFC­
141b
Hydrocarbon
&

HFC­
245fa/
CO2
(
water)
Plant
investment
required
in
isolated
cases
Extruded
Polystyrene
Roof
and
wall
insulation
2.0
24.8
No
transition
yet
achieved
HFC­
134a,
HFC­
152a
CO2
and
CO2/
ethanol
Solubility
of
alternates
Building
codes
Process
constraints
Polyethylene
Foam
Block
&
Pipe
insulation
1.0
No
remaining
HCFC
use
Hydrocarbons
Product
flammability
&
process
safety
require
management
TOTAL
121.9
(
55.4ktons)
5.25
(
1.36ktons)
27.05
(
12.3ktons)
