Definition
House wrap is breathable weather barrier installed over wall sheathing to prevent water intrusion while allowing vapor transmission. It's essential for wood-frame homes to prevent moisture damage and rot. Installation requires seam sealing and opening sealing.
Not sure where this fits?
Answer a few questions and we’ll open the path that fits, at the right step.
Find my pathAbout this term
House wrap is a synthetic material (typically polypropylene) that sheds bulk water while allowing vapor transmission. Installation over all sheathed areas creates a water barrier before siding or other exterior coverings. House wrap is critical in wood-frame homes to prevent moisture damage and rot. Products vary in vapor permeability; selection depends on climate. Proper sealing of seams and openings is essential for effectiveness.
Pro Tip
House wrap is essential for durability. Ensure seams are taped and openings sealed properly to prevent water damage and mold.
Example
Wall sheathing is covered with house wrap, with seams sealed with compatible tape, creating a barrier that sheds rain while allowing walls to dry.