What you gain
- Flatter look on imperfect walls
- Slightly better dent resistance feel
- Minor continuous foam layer behind the panel
What you should not expect
Dramatic heating bill cuts — most heat loss is still attic, windows, and air leaks.
A pass on proper housewrap and flashing.
When we recommend it
When rigidity and finish matter and budget allows. Standard vinyl remains a strong path for many New Hampshire homes.