Specifications: 

Perm Rating: 

• 0.02 to 0.03 perms: It has a very low vapor permeability, making it an effective moisture retarder.

Composition:

• Polypropylene Scrim Reinforced Kraft (PSK): WMP-10 comprises multiple layers, including polypropylene, scrim (a reinforcing fabric), and kraft paper, which provides durability and resistance to tears.

Reflectivity:

• Reflective Surface: The facing often has a reflective surface that can help with thermal insulation by reflecting radiant heat.

Tensile Strength: 

• The scrim reinforcement provides high tensile strength, making the insulation more durable during installation and service.

Fire Rating:

• Class A/Class 1 Fire Rating: Meets fire safety standards, meaning it has been tested to provide a high level of fire resistance.

Thickness:

• Typically 0.035 inches (approx.): This thickness includes the multiple layers of the vapor retarder.

WMP 10 is chosen over VRR+ fiberglass insulation due to its superior moisture control, enhanced durability, and more straightforward installation process. It provides better vapor barrier properties and integrates well with various construction materials, ensuring long-term efficiency and structural integrity.  

 When considering insulation options, it's essential to understand the difference between WMP-10 and reflective insulation. While reflective insulation is effective in specific applications, it should be viewed as an additional or complementary insulation, not a stand-alone solution. In contrast, WMP-10 is a comprehensive insulation solution that excels in high-moisture environments. Its superior water resistance and vapor barrier properties make it the wiser choice, particularly in areas like basements or crawl spaces where reflective insulation might not provide adequate protection.