Year: 2026

Does polyiso lose R-value in heat, cold, or both?

Polyisocyanurate, commonly called polyiso, is one of the most widely used rigid foam insulation products for commercial roofing because it provides a high R-value per inch while helping reduce heat…

How should contract disputes be escalated during a project?

Commercial roofing projects involve many moving parts, including design requirements, materials, schedules, payments, inspections, warranties, and unexpected site conditions. Even with a well-written contract, disagreements may occur between property owners…

What is thermal drift in polyiso insulation?

Thermal drift in polyiso insulation refers to a gradual change in the insulation’s thermal resistance, or R-value, over time. Polyisocyanurate (polyiso) is widely used in commercial roofing because it provides…

When does the warranty start date begin?

A commercial roofing warranty provides important protection for property owners by covering certain defects in materials, workmanship, or roofing system performance. However, one of the most common questions after a…

What is LTTR and how is polyiso R-value officially rated?

When choosing insulation for a commercial roofing system, R-value is one of the most important performance measurements to understand. It indicates how effectively an insulation material resists heat flow—the higher…