Photo Source: Summerhill

Photo Source: Summerhill

Implications of improper installation or failure of the system:

If a water control layer is not installed properly or fails it can cause serious repercussions for the building materials within the building envelope. When water enters a building envelope, it can have a dramatic impact on insulation materials within the cavities as the thermal effectiveness of the materials can be greatly reduced if they become damp or wet. Other issues that may arise within the envelope are rotting wood, mould and mildew, and structural damage from deteriorating materials.

The Simple Truth: The water control layer protects your wall cavity from OUTSIDE elements.