I seem to recall a product for de-icing gutters. It was a tape/cable
that ran underneath the gutters, was held by adhesve, and did not
enter the roof line. The idea of the product was to allow a free flow
of water through the gutters by heating from the bottom, giving a
channel. If memory serves, it could also be wrpped around or run down
the back of the downspouts to keep them free from ice as well.
All I see available now are the cables that zig-zag across the bottom
foot or so of the roof, and apparently into the gutter as well. I
assume that these are probably better for the purpose of preventing
ice dams, which is my objective, but I don't want to attach anything
to my roof, even with adhesive.
So, my questions: Are the under gutter tapes available (or were they
perhaps a figment of my imagination)?
If they are available, are they effective in preventing ice dams? Are
the zig-zag tapes better? Is there a way to attach the zig-zag tapes
to the roof without adhesives, tacks or nails? I saw clips
advertised, but I wonder about their effectiveness.