HempWool R13 Hemp Insulation is a revolutionary, eco-friendly insulation material designed for eco-conscious builders. It blends 90% natural hemp fiber with 10% polymer fiber and, with 400 sq ft per pallet and all sizes available, delivers solid thermal performance with a lighter environmental footprint. It offers a standard R-value of 3.7 per inch and helps you build green without sacrificing comfort.

Key Features & Design

• Composition: 90% natural hemp fiber and 10% polymer fiber.
• Density: 2.81 lbs/ft³ (45 Kg/m³).
• Thermal Conductivity: 0.040 W/m.K.
• Thermal Resistance: R3.69/inch.
• Vapor Permeability: 0.647 Perms (37 ng/Pa.s.m²).
• Ignition Time: 6.67 seconds, treated with biobased, non-toxic fire retardants for increased safety.
• Heat & Smoke Release: Low, contributing to overall safety.
• Environmental Benefits: USDA Certified Biobased Material with 89.9% organic carbon content; free from VOCs and Red List Chemicals. An Environmental Product Declaration is forthcoming in 2023.
• Hygrothermal Behavior: Maintains efficiency despite moisture, offering a competitive advantage over inorganic fibers.
• Phase Shift Regulation: Provides up to 10 hours of heat retention for 7.5 inches of insulation.
• Dimensional Stability: High mechanical strength prevents sagging or settling post-installation.
• Applications: Ideal for exterior walls, floors, ceilings, and more, with improved air quality and acoustic comfort.
• Installation & Safety: Friction-fit between wooden or steel frames; safe to handle with no skin irritation. Dust masks and eye protection recommended during installation. Panels are shrink-wrapped with compostable plastic film for safe delivery and storage.
• Certifications & Standards: ASTM C209, E96, C518, E1354; Currently under evaluation for ICC-ES International Code Compliance (2023).

Designed to be as straightforward to install as it is to live with, HempWool fits between framing without drama and keeps your indoor air quality high while dialing down noise. If you’re chasing sustainability without compromising performance, HempWool R13 is built to deliver—with a responsibly sourced footprint and the kind of durability that keeps your walls from sagging under the pressure of time.