A. All insulation shall be in compliance with Illinois energy conservation code that is in effect at time of installation.
B. Walls:
1. Residential: All exterior and plumbing walls shall be carefully insulated with insulation having a minimum insulation value of R-13 and R-5 insulated sheathing. The insulation shall not be so compressed during installation as to reduce its effectiveness.
C. Ceilings/Roof:
1. Commercial: Shall comply with the Illinois 2018 (current energy conservation code) ANSI/ASHRAE 90.1-2016.
2. Residential: All ceilings shall be carefully insulated with an insulation having a minimum insulation value of R-49.
3. All sloped areas will be insulated with batts only. Blown in material is prohibited.
4. All ceilings that will be insulated are required to have a batt/blanket for the first layer.
D. Underfloor And Crawl Spaces:
1. Insulation with a minimum insulation value of R-15/19 is required on the crawl space walls thirty inches (30") vertically below the box sill. All box sills shall be insulated value of R-13.
E. Insulation/firestop inspection is required before covering any insulation system. (Ord. 2014-46, 6-3-2014; amd. Ord. 2020-56, 6-16-2020)