1 lb density expanded polystyrene is used to make melt away ceiling
tiles. These EPS ceiling tiles are used in place of standard fiberboard
ceiling tiles when the sprinkler heads are above the ceiling. A typical
application would be when office space constructed inside an existing
warehouse with a sprinkler system. The tiles are called “melt away”
because they are designed to melt from the heat of the fire to allow the
heat to set off the sprinkler heads above. The EPS ceiling tiles which
are typically 3/4″ or 1″ thick fit into standard 2×2 or 2×4 ceiling
grid. This particular application was a tegular or “dropped” tile which
is notched to come down slightly below the grid.
