Cutaway of ventilated nail base insulation panel with wood spacers

Ventilated ThermaCal® non-structural nail base insulation installed over heavy timber, plywood, and metal decking in accordance with asphalt shingle manufacturers’ warranties. Insulation screws and fasteners are available.

Nail Base Insulation Characteristics

  • Economical and efficient
  • Rabbeted edges or tongue-and-groove foam
  • Various thicknesses for R-values up to 32
  • Economical, two-layer applications available
  • Wood block spacers for many directions of air flow
  • Non-ventilated ThermaCal® available for other roofing material

Planning a project?

We’ll work with your plans to provide roof and floor system preliminary designs and budget estimates.

Contact Us