200 FT Heat Roof Gutter De-Icing Ice Snow Melter Cable Tape On6±3? Off13±39milelake Heat Roof Gutter De-Icing Ice Snow Melter Cable Tape Kit (200FT). Snow de-icing cable prevents winter damage to roof, gutters, and downspouts. Provides uninterrupted path for melting water to flow off roof. Suitable for most roof and gutter configurations; available in.