For relentless PNW rain, choose algae-resistant asphalt shingles with SBS-modified asphalt, enhanced seal strips

https://easypdfshare.com/s/KLnv9TK0WxLuq-sXoGxwe

For relentless PNW rain, choose algae-resistant asphalt shingles with SBS-modified asphalt, enhanced seal strips, and high wind ratings. Pair with waterproof underlayment and metal flashing to keep edges and valleys leak-free.