a large growing fungus serpula lacrymans on the walls and floor of a residential building it is the most destructive fungus

aggressive attack board brown closeup construction contamination damage damaged damaging damp decay detail dirty dryrot endospore environment floor flora fungal fungus growth house humidity lacrymans macro mildew mold mould mycelium prevention protection renovation rot serpula spawn structure surface textured timber tree treedestroying wall weathered wet wooden woodworking