When insulating & managing moisture is a top priority, we've got you covered.
Halfback H20 features built-in drainage grooves to keep the wall dry.
Halfback H20 does more than manage moisture.
Moisture Management
Halfback H20 is made with StayDry Technology®, a proprietary manufacturing process that makes the insulation 3x more breathable than comparable products. With a perm rating of up to 4.6, it helps protect the home from potential moisture damage, letting water vapor generated inside the home escape.
Proven Energy Efficiency
Continuous Insulation powered by GPS (Graphite Polystyrene) Foam. Holds its R-Value: After extreme environmental testing, held its R-value in conditions that involved both constant thermal gradient and cycling between large temperature and humidity variations.

Termite Resistant
Protected from insect degradation with a specially formulated insect inhibitor that’s safe for humans and pets.

Stability and Durability
Halfback H20 is adaptable in size, thickness, shape and density, providing maximum flexibility and durability.
Fire Performance
Halfback H20 is formulated with specially modified materials that are manufactured with a flame retardant (ASTM E84/UL 723).
Interested in Even MORE Energy Savings?
Take energy savings to the next level with GPS
Halfback H2O siding insulation is available in both white expanded polystyrene (EPS) and graphite polystyrene (GPS). GPS provides up to 20% more insulating value than standard EPS, allowing for more energy savings with the same amount of material.
Specifications & Downloads
Specifications
| Dimensions = 4'x4' and 4'x8' |
| EPS Thicknesses = 3/4" (R-2.3) and 1" (R-3.3) |
| GPS Thicknesses = 3/4" (R-3.0), 1" (R-4.0) and 1-1/4" (R-5.0) |
| Density = Minimum .90 lb./ft3 |
| Water Vapor Permeance = Up to 5.0 |
| Compressive Strength = Minimum 10 PSI |
| Flexural Strength = Minimum 25 PSI |
Downloads
HalfbackH20 Original Brochure (short) (pdf 0.91 MB)
HalfbackH2O Original Brochure (full) (pdf 1.76 MB)
HalfbackH20 Original Data Sheet (pdf 0.1 MB)
HalfbackH20 Premium Brochure (short) (pdf 1.16 MB)
HalfbackH20 Premium Brochure (full) (pdf 1.95 MB)
HalfbackH20 Premium Data Sheet (pdf 0.12 MB)
HalfbackH2O Original Brochure (short) (pdf 0.91 MB)
Stories About HalfbackH20
HalfbackH20 is a general siding insulation product that not only insulates your home, but also provides an extreme level of?protection against bulk water that may accumulate on the sheathing surface. How It WorksHalfbackH20 is a closed cell, rigid siding insulation with drainage grooves for enhanced moisture management. The grooves are built into the back […]
HalfbackH20 Premium Siding Insulation Installed Under Fiber Cement During Mold Remediation Remodel ?We believe that HalfbackH20 Premium is the perfect product for us to add insulation to these remodeled homes while resting easy knowing it will help effectively manage moisture from day one.” -Joe Yurick, General Manager Atlantic Remediation and Restoration Contractors (ARRC) in Pennsylvania […]

Moisture Management
