What can be a consequence of improper flashing on decks?

Improper flashing on decks can lead to significant structural damage from water exposure. Flashing is a critical component designed to direct water away from areas that are more vulnerable to leaks, such as the seams, joints, and transitions between different building elements. When flashing is installed incorrectly or is insufficient, water can penetrate into the underlying materials, leading to degradation over time.

This water intrusion can cause numerous problems, including weakening of structural components such as beams and joists, growth of mold and mildew, and deterioration of insulation materials. Ultimately, these issues can compromise the integrity of the deck and possibly the entire structure if not addressed. Addressing flashing correctly is essential to ensure long-term durability and safety of deck constructions.