Hempitecture
HempWool R20 Hemp Insulation (256 Sq Ft/Pallet) - All Sizes
HempWool R20 Hemp Insulation (256 Sq Ft/Pallet) - All Sizes
SKU:516-HWR2016FP
Est Delivery between 6th Feb and
12th Feb.
The option you have selected may be in short supply. To make an enquiry please call us on 786-224-0029 or email us at sales@4us-group.com.
How much will I need?
We recommend adding 10% of additional product to the calculation to account for errors, damages, and obstacles in your project


Product Information
HempWool R20 Hemp Insulation is a revolutionary, eco-friendly insulation material, boasting an exceptional blend of 90% natural hemp fiber and 10% polymer fiber. With a standard R-value of 3.7 per inch, it competes with traditional insulation products in thermal resistance, while offering unique environmental benefits.
Key Features:
- Density: 2.81 lbs/ft³ (45Kg/m³)
- Thermal Conductivity: 0.040W/m.K
- Thermal Resistance: R3.69/inch, providing excellent thermal efficiency
- Vapor Permeability: 0.647 Perms (37ng/Pa.s.m²), ensuring superior humidity management
- Ignition Time: 6.67 sec, treated with biobased, non-toxic fire retardants for increased safety
- Heat and Smoke Release Rates: Low, contributing to overall safety
- Environmental Benefits: USDA Certified Biobased Material with 89.9% organic carbon content. It contributes to the reduction of greenhouse gases and is 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, enhancing thermal efficiency.
- Dimensional Stability: High mechanical strength prevents sagging or settling post-installation.
Applications:
HempWool is ideal for exterior walls, floors, ceilings, and more, offering improved air quality and acoustic comfort. It's particularly suited for eco-conscious construction projects seeking sustainable, high-performance materials.
Installation and Safety:
HempWool is designed for easy friction fit between wooden or steel frames. It's safe to handle, causing no skin irritation, though dust masks and eye protection are recommended during installation. Panels are shrink-wrapped with compostable plastic film for safe delivery and storage.
Certifications and Standards:
- ASTM C209, E96, C518, E1354
- Currently under evaluation for ICC-ES International Code Compliance (2023)
Pros & Cons
Pros
- Eco-Friendly: Made of 90% natural hemp, reducing environmental impact.
- High Thermal Resistance: R-value of 3.7 per inch, comparable to traditional insulations.
- Improved Humidity Management: Vapor permeability of 0.647 Perms ensures efficient humidity control.
- Fire Safety: Treated with non-toxic fire retardants, resulting in a 6.67-second ignition time.
- Low Heat and Smoke Release: Enhances safety in case of fire.
- Organic Carbon Content: USDA Certified Biobased Material with 89.9% organic carbon, reducing greenhouse gases.
- Moisture Resistance: Maintains efficiency despite moisture, an advantage over inorganic fibers.
- Installation Knowledge: Requires specific knowledge for proper installation.
- Certification: Under evaluation for ICC-ES International Code Compliance as of 2023.
Frequently Asked Questions
HempWool Insulation is composed of 90% natural hemp fiber and 10% polymer fiber, offering an eco-friendly alternative to traditional insulation materials.
HempWool has a standard R-value of 3.7 per inch, making it competitive with traditional insulation products in terms of thermal resistance.
Yes, HempWool is an environmentally friendly product. It is USDA Certified as a Biobased Material, contains 89.9% organic carbon, and helps reduce greenhouse gases. It's free from VOCs and Red List Chemicals.
HempWool is versatile and suitable for exterior walls, floors, ceilings, and more, making it ideal for various parts of a building, especially in eco-conscious construction projects.
Yes, HempWool is safe to handle and causes no skin irritation. However, it's recommended to use dust masks and eye protection during installation.
HempWool is treated with biobased, non-toxic fire retardants, resulting in a 6.67-second ignition time and low heat and smoke release rates, contributing to its safety in fire scenarios.
HempWool has a vapor permeability of 0.647 Perms, ensuring superior humidity management within buildings.
HempWool insulation adheres to ASTM standards like C209, E96, C518, E1354 and is currently under evaluation for ICC-ES International Code Compliance as of 2023.
HempWool provides up to 10 hours of heat retention for 7.5 inches of insulation, enhancing its thermal efficiency.
HempWool offers high mechanical strength, preventing sagging or settling post-installation, but its long-term performance compared to traditional materials is still being established.
Technical Specifications
Average heat release rate | 5.74 (BTU/s/ft2) |
Brand | Hempitecture |
Density of insulation | 2.81 lbs/ft3 / 45Kg/m3 |
Heat release maximum rate | 10.98 (BTU/s/ft2) |
Ignition time | 6.67 sec. |
Length | 48" |
Thermal conductivity | 0.040W/m.K |
Thermal resistance | R3.69/in |
Thickness | 5.5" |
Total heat release | 642.8 (BTU/s/ft2) |
Total smoke release by surface unit | 217.26 (ft2/lb) |
Vapor permeability | 0.647 Perms / 37ng/Pa.s.m2 |
Datasheets
Delivery Information
Est Delivery between 6th Feb and
12th Feb.
Delivery will always take place on a weekday (Mon - Fri excl. public holidays).
An exact shipping charge will be calculated at checkout based on your order and location.
For more information on shipping view our delivery info page.
Frequently asked questions
Can you help me pick the right insulation for my project?
Yes, of course!
Our team is ready to assist you with any questions and queries you may have.
Just reach out to us via any of the following methods:
Call us: 786-224-0029
Email us: sales@4us-group.com
or click the Livechat tab at the bottom of your screen.
How do I track my order?
As soon as your order is dispatched, you'll receive a dispatch email with delivery dates and details for your order.
If you require an update on your order, you can email deliveries@4us-group.com with your order number for assistance.
Can I order now and pay later?
Yes, we offer a variety of flexible payment options to all our customers.
When checking out online, you'll be able to avail of multiple buy now, pay later options with ShopPay, Klarna or PayPal.
The flexible payment options available to you at checkout will be based on the total value of your order.
For B2B customers, you can apply for a 30-day trade credit account, and you'll also unlock:
- Dedicated trade pricing
- Loyalty points and rewards
- A dedicated account manager
I have a large-scale project, can I get a quote?
Yes, if you are carrying out a construction project that requires a large quantity of materials, email sales@4us-group.com with the following information and we will get back to you with your very own bespoke price quote:
- Delivery postcode and address
- Mobile number
- Company name
- A list of required materials and their quantities
Can I open a pro contractor account?
Yes! Pro contractors can open a B2B account to unlock bespoke pricing, B2B discounts, trade credit, loyalty points, and a dedicated personal account manager.
You can learn more here: Open a pro contractor account
Can I cancel or amend my order after placing it?
Yes, if your order has not yet been processed for dispatch, cancellation/ amendments should be possible.
Our team works quickly to get your order delivered as soon as possible so it is likely that your order will be processed for dispatch within 2-3 hours of purchase.
Contact us immediately via sales@4us-group.com or call 786-224-0029 during opening hours.
If you wish to amend your order after it has been processed by our team, it will be treated as a return or a separate new order.
Read more: Returns