Shingle Inserts And Method For Eliminating And Preventing Growth OF Algae, Moss, Or Lichens On A Roof

A shingle insert strip for the growths of algae, moss lichens, or fungus on roofs comprising:

• an elongated generally planar strip of a sheet of metal such as copper which releases ions into rainwater runoffs flowing thereto having a lengthwise extending raised formed feature formed therein extending along the length of the strip of copper sheet, defining an impoundment which intercepts and impounds rainwater flowing down the roof, said raised defining an underspace and providing a stiffening reinforcement tending to minimize any bending of the insert strip;
• said metal strip having openings allowing penetration through said strip of rainwater runoff from above into said strip and to thereafter flow out onto a roof surface below said strip;
• said shingle insert strip having an upper portion above said raised formed feature adapted to be inserted and nailed beneath a shingle course above other portions of said shingle insert strip to position remaining portions of said strip to be exposed to receive rainwater runoff.