AccuBlock is designed for unventilated attic spaces, providing a seal between the top plate and roof sheathing where attic insulation is most vulnerable. It offers a quick and inexpensive solution for architects, builders, and renovators to ensure proper insulation performance for better energy efficiency and indoor air quality.

The AccuBlock system provides an efficient spray template at the top plate and is adaptable for any roof pitch or truss size. It installs quickly and easily with just a few staples and is manufactured from 100% recycled, flame-retardant PVC.

Unvented Applications

  • Specially designed for use with spray foam

  • Ideal substrate for new projects

  • Conforms to ENERGY STAR®, LEED®, & EPA Indoor airPLUS best practices

Learn More About AccuBlock

AccuBlock Roof Ventilation System


Accublock Insulation

Superior Insulation Performance

By seamlessly connecting the top plate to the roof sheathing for a clean, tight soffit edge, AccuBlock eliminates the need to create a time-consuming “soft wall” and ensures insulation effectiveness.

Eaves Ventilation

Quick & Easy Installation

AccuBlock is the preferred choice for insulation contractors looking to improve installation speed and efficiency. Since it is unaffected by the chemical and thermal properties of spray foam, it provides an ideal spray template at the top plate.

Flexible Accublock

Design Flexibility

AccuBlock resists moisture and wind, allowing it to be utilized in both traditional and cathedral ceiling applications.

Fire Retardant Accublock

Self-Extinguishing Material

Made from rigid PVC, AccuBlock has been designed with safety in mind as the material is flame retardant and self-extinguishing.



Articles & Literature

Request Information