Shingle Shield should be installed in a straight line under the first row of shingles below the ridge. Leave a 1/8″ gap between each piece, or simply overlap the pieces – this provides for thermal expansion of zinc, which could be take place under the most severe high temperature conditions
Hammer. Quality Roofing Nails (Double hot-dipped galvanized ) for asphalt and fiberglass shingle roofs.
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Beginning from either end of the roof peak install a continuous single row under the first available course of shingles below the ridge line. Allow for thermal expansion by leaving 1/8″ (0.3 cm) pap between each section, or slightly overlap sections. Slide Shingle Shield up under the shingle until its built-in alignment guide butts against the edge of the shingle.
Shingle Shield is designed to be installed on a new or existing roof. Roof must be cleaned with shingle shield Roof & Deck Cleaner to remove any existing algae, fungus, and/ or moss prior to installation of Shingle Shield zinc strips. Shingle Shield will last the life of the roof, and may be reused. Will not rust.
IMPORTANT! Do not attempt to install this product in rain, when roof is wet, or if a lightning storm is imminent. Use care when raising shingles – in warm weather, they may be tacky and stick together where overlap occurs; in cold weather, they may be brittle and subject to cracking or breaking.