This Whonnock home in Maple Ridge shows why building envelope choices matter. We compared Tyvek, Blueskin, and traditional tar paper to explain when to use each — and how choosing the wrong one can trap moisture and rot your walls in BC’s wet climate.

This Maple Ridge home shows classic signs of a compromised building envelope — woodpecker damage and leaking gutters allowed moisture to penetrate behind the cedar siding, rotting the building paper and structural components beneath.