You mentioned EPS and polyisocyanurate insulated cores. What are the advantages and disadvantages of each?
Both EPS and polyisocyanurate (`poly’) have advantages and disadvantages. EPS is less expensive than `poly.’ It is easier to work with, both in our factory, and at your site. It can be scooped out with a `hot knife,’ like the photo shows, when you need to place inserts for doors and windows. `Poly’ has more insulating value per inch than EPS, so EPS panels will need to be a little thicker to achieve the same R-value. Both EPS and `poly’ panels are flammable (that’s why they’re usually covered with a drywall layer for a firebreak), but EPS is somewhat more flammable than `poly.’ We’ve found more than 95% of our clients choose EPS for its lower cost, and ease of installation.
