Where Insulation Stops, Thermal Performance Drops
If your insulation ends short of the edge, so does your building’s thermal performance — and the results are visible.
As seen in the bright yellow-orange of the thermal scan in the header above — taken from a real-world project — traditional wood nailers disrupt insulation continuity, creating predictable hot spots where energy escapes.
Problem: The Hidden Gap of Wood Nailers
Typically positioned 6–8" inside the roof edge, traditional wood nailers occupy the space where insulation would otherwise continue — creating a consistent thermal gap that breaks continuity and lowers R-values, even in well-insulated systems. It’s a small detail with a significant potential impact on energy performance.
Confirmation: Thermal Modeling
Seen below on the left, thermal simulation reveals how a standard wood nailer interrupts perimeter insulation. The result? A wider temperature gradient at the edge — clear proof of energy loss and compromised R-values where insulation continuity falls short.
Solution: Continuous Insulation via Wood Nailer Alternative
In contrast, Eliminailer-T — a metal alternative to wood nailers — enables continuous insulation at the perimeter. This design preserves thermal continuity, limits energy loss, and supports higher R-values. Seen above on the right, modeling shows a tighter, more controlled gradient confirming that uninterrupted insulation maintains efficient performance.
Unlike traditional wood nailers, metal alternatives Eliminailer-T and EdgeBox RI are engineered to carry insulation fully to the perimeter — reducing thermal loss, supporting R-value targets, and enhancing envelope efficiency.
Built to last, these wood nailer alternatives are spec-ready with thorough industry testing and a Lifetime, 215 MPH Wind Warranty.
Learn How to Apply It
Understanding the problem is step one. Knowing how to specify the solution is step two.
Request your in-person or virtual session of “Wood Nailer Alternatives: Sustainable Solution to Enhance Roof Perimeter Security and Strength,” our continuing education seminar covering everything you need to know about nailers — both wood and metal.
