Prefabricated durable building material

摘要

A building material (10) comprising: a fiber cement substrate (12) having a first side and a second side; at least one resin impregnated paper (16) over at least one of said first and second sides; and an elastomeric film (14) between said fiber cement substrate (12) and said at least one resin impregnated paper (16), said elastomeric film (14) acting as a stress relaxer between said fiber cement substrate (12) and said at least one resin impregnated paper (16).