A preferred example of a pre-assembled,
moisture, water, and gas impermeable fire-barrier
system for use in expansion-
joint spaces includes a fire-barrier having a first multi-layer of outermost protective cloth layer overlain by an insulation
blanket overlain by stainless steel foil, a second multi-layer, overlaying and fixedly attached to the first multi-layer, containing an insulation
blanket, overlain by a limited layer of
intumescent material, overlain by impermeable
silicon cloth to completely or partially surround the barrier, and a first attachment apparatus for attaching a first long edge of the fire-barrier to a
building unit and a second attachment apparatus for attaching the opposing second long edge to an opposing spaced
building unit, which attachment apparatus may be fixedly attached to the barrier, and where the barrier
system may be fitted with a drain aperture and a drainage hose emanating from the aperture, the hose protected from the heat of a fire.