A fire retardant barrier panel (16) comprising a first protective layer
(18) of a first material and a fire resistant phenolic-based resin layer
(19) bonded to the protective layer. The first material may be selected
from the group consisting of gypsum, ceramic fiber, phenolic foam,
basalt, fiberglass, carbon fiber, mineral wool and intumescent materials.
The resin may be a phenol or phenolic resin. The fire retardant barrier
panel may further comprise a second protective layer (20) bonded to the
resin layer (19) such that the resin layer is between the first and
second protective layers. The second protective layer (20) may be
selected from the group consisting of gypsum, ceramic fiber, phenolic
foam, basalt, fiberglass, carbon fiber, mineral wool and intumescent
materials.