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.



  • Specially designed for use with spray foam
  • Ideal substrate for new projects
  • Conforms to ENERGY STAR®, LEED®, & EPA Indoor airPLUS best practices