The exterior wall keel is kept from being damaged by the PIR or PUR Seamed Siding board's low weight and rigidity. It may be used for horizontal installation on the exterior wall, and the board seam can be altered. The effect of an aluminium plate curtain wall may be displayed using the four-sided tongue-and-groove method. PIR or PUR Seamed Siding Board has distinct compositions, but they share several characteristics, such as being lightweight with good heat conductivity and being recyclable.