42821017 Membrain Air Barrier Vapor Retarder Roll, 8 Ft. X 100 Ft.

The CertainTeed MemBrain Air Barrier and Smart Vapor Retarder Roll is an insulation product designed to enhance energy efficiency while protecting your home from moisture damage. This 8 foot wide by 100 foot long roll is ideal for use in attics and walls. By acting as both an air barrier and an intelligent vapor retarder, it helps block air leakage while allowing the wall assembly to breathe as conditions change.

MemBrain technology uses smart vapor control that adapts to changing humidity levels throughout the seasons. The membrane intelligently regulates vapor flow based on seasonal conditions, helping prevent moisture-related problems. This dynamic performance adapts to your home's conditions year-round, whether you are a professional contractor or a DIY enthusiast tackling an insulation project.

Features and Benefits

• Smart Vapor Retarder: Intelligently regulates moisture flow based on seasonal humidity changes, adapting to your home's conditions throughout the year.
• Air Barrier Performance: Blocks air leakage while allowing the wall assembly to breathe, maintaining building envelope performance.
• Formaldehyde Free: Manufactured without formaldehyde, making it a safer choice for indoor environments.
• Roll Format: The roll design makes handling and installation straightforward for building projects.
• Versatile Application: Suitable for use in both attics and walls across a variety of building applications.

Specifications

• Brand: CertainTeed
• Model: 42821017
• Width: 8 feet
• Length: 100 feet
• Formaldehyde Free: Yes
• Product Type: Air barrier and smart vapor retarder roll