Regarding gutter and downspout deicing tapes, can your products be used with plastic downspouts?

Regarding gutter and downspout deicing tapes, can your products be used with plastic downspouts?

GutterMelt SR Cables are self regulating and do not over heat.  The heat output of these cables increase as the surrounding temperature decreases and output decreases as surrounding temperatures increase.  GutterMelt is perfectly fine to use with plastic downspouts due to these self regulating heating characteristics.