Aug 7, 2017 · When a builder comes across an R20 + 5ci insulation requirement, it can be easy to think: R20 + 5ci? Why not just use R-25 in the cavity? Fewer steps, same performance, right?

Sep 5, 2017 · This article provides an analysis of three equivalent wall assemblies from a thermal performance perspective that have very different insulation R-value specifications: R-20 + 0ci, …

Jan 4, 2024 · R20 + 5ci,, R13+ 10ci, or 0+ 20ci. Based on the example of R20 +5ci, this would entail a 2×6 exterior wall with a min cavity insulation of R20 PLUS a min of R5 of continuous …

When a builder comes across an R20 + 5ci insulation requirement, it can be easy to think: R20 + 5ci? Why not just use R-25 in the cavity? This guide goes through the math comparing R20 + …

The R20+5ci wall is 15% more efficient than the R-25 wall. This is because the R-5ci creates a thermal break at the stud and header locations. According to the U-factor compliance table, …

The 2018 code required wall insulation to be R20 or R13+5ci. To meet this standard you need either. R20 insulation in your wall between your studs -OR-R13 between your studs with an R5 …

Continuous insulation (also known as CI) is defined by the energy code as: “Insulation that is uncompressed and continuous across all structural members without thermal bridges other …

Air control layer – primary air enclosure boundary, separates indoor conditioned air from outdoor and unconditioned air. Must be continuous, impermeable to airflow, durable over lifetime of …

CONCLUSION: An “R25” wall has an effective R-value of R-18.6 (U = 0.054). An “R20 + 5ci” wall has a much greater effective R-value of R-22.4 (U = 0.045) because the continuous insulation …

What is the difference between R20 and R20 + 5ci walls? As you can see, while both walls have the same cavity R-value, the R20 + 5ci wall has a higher R-value for the framing path, thanks …