Plastmo Ltd. Canada and Plastmo Inc. USA (Plastmo) were established in 1976. Both companies are descended from, but independent of, A/S Plastmontage in Denmark. The companies were established to market the vinyl rain gutter produced by Plastmontage since 1959. Plastmontage had succeeded in selling most of the vinyl rain gutter in Scandinavia by producing a leak-proof product so durable it would survive the extremes of the Scandinavian climate.