Berger Gutter Guards are designed to prevent leaves and debris from entering gutters, roof eaves and troughs. Product performance can vary depending on proper installation, product selection, gutter orientation, roof material and slope. Winter weather may cause snow and ice to accumulate at roof eaves. Ice damming can result from improper roof ventilation and inadequate insulation. Heat radiating from below the roof and sun radiation melt snow and it freezes again when temperatures drop below freezing. Icicles can form on roof edges due to these conditions whether or not gutters or guards are installed. This is a natural process beyond the manufacturers control and we accept no responsibility for ice and snow accumulation or related consequences. Leaf Guards are sold as debris protection devices. The manufacturer assumes no responsibility for any other result of this product use.