HydroBlok expands HB One Backer CI for direct-to-stud wall installs

By AI, Created 9:46 PM UTC, May 28, 2026, /AGP/ – HydroBlok says its HB One Backer CI panel has passed testing for direct-to-stud installation in non-shear wall sections, a change aimed at simplifying wall assemblies while preserving continuous insulation. The move could reduce layers, labor and complexity for builders facing tighter energy-code requirements.

Why it matters: - HydroBlok says the new direct-to-stud capability removes another layer from wall assemblies while keeping continuous insulation in place. - The change is aimed at builders dealing with tighter energy codes, labor shortages and more complex wall designs. - The update is designed to make code-compliant, high-performance walls easier to build in residential and commercial projects.

What happened: - HydroBlok announced that HB One Backer CI passed testing for direct-to-stud installation in non-shear wall applications. - The capability applies to designated non-shear wall sections and covers about 80% of the wall surface, according to HydroBlok. - Structural sheathing remains required in shear walls, braced-wall lines and other areas where engineering, code or project conditions require it. - The company said the wall sequencing remains familiar, with the water-resistive barrier installed first and HB One Backer CI applied over framing in approved sections.

The details: - HB One Backer CI is positioned as a panel that combines continuous insulation with wall assembly functions. - For stucco applications, the panel integrates a secondary water-resistive barrier, continuous insulation, lath and scratch coat into one product. - HydroBlok says the direct-to-stud capability adds the panel as the non-shear substrate in approved assemblies, creating a 5-in-1 panel for stucco walls. - For mechanically fastened cladding such as fiber cement and vinyl siding, HB One Backer CI is compatible with siding manufacturers’ prescriptive continuous insulation installation methods. - The company says builders can get continuous insulation and a secondary water-resistive barrier in a single layer while keeping a familiar cladding installation process. - HB One Backer CI is recognized for code compliance through ICC, with full evaluation documentation for direct-to-stud application still forthcoming. - Builders, architects, engineers and code officials are directed to use applicable ICC documentation, local code requirements and project-specific design conditions when evaluating assemblies. - HydroBlok also says the product supports continuous insulation requirements tied to the 2024 International Energy Conservation Code for wood- and steel-framed walls.

Between the lines: - The announcement reflects a broader shift in wall design toward fewer layers and more integrated functions. - HydroBlok is trying to keep the install sequence familiar, which could lower the barrier to adoption for crews and designers. - The direct-to-stud change appears aimed at expanding where the panel can be used without changing the structural rules that govern the rest of the wall assembly.

What’s next: - HydroBlok said full evaluation documentation for the direct-to-stud application is forthcoming. - Builders and design teams will need to confirm use through ICC documentation and local code requirements before specifying assemblies. - HydroBlok is directing interested readers to more information on its website.

The bottom line: - HydroBlok is betting that combining insulation, water management and stucco functions into fewer layers will make compliant wall construction faster and simpler.