Insulation Thickness and R-Value: Use the Schedule, Not Memory
Read the insulation schedule for the duct service, location, temperature, and exposure, then confirm the installed product provides the specified thickness and thermal value.
Stop if What insulation type and thickness does the schedule require for this duct service and location? Watch out Do not copy the thickness from a nearby system, compress insulation to fit, or assume equal thickness means equal R-value. Check Identify duct service and location Read the current insulation schedule and notes Match product type, thickness, density, and facing Check compression at supports and tight clearances Verify transitions between indoor, outdoor, and unconditioned areas Steps Identify duct service and location Read the current insulation schedule and notes Match product type, thickness, density, and facing Check compression at supports and tight clearances Verify transitions between indoor, outdoor, and unconditioned areas Say this to your foreman What insulation type and thickness does the schedule require for this duct service and location?
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