VALICALC · TECHNICAL REFERENCE

Insulation R-Value Chart

Compare selected Climate Pro attic R-values, RSI and installed thickness. Use a named product target in the Blown-In Insulation calculation.

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Search within the verified subset. Numeric sizes match complete designations; a nearby size is a candidate, not an exact match.

SELECTED REFERENCE

Climate Pro attic R38

Thermal resistance
6.692 m²·K/W
Minimum installed thickness
350.52 mm
R-value US
38 h·ft²·°F/BTU
All fields & cell provenance
Material-only inverse RSI
0.149 W/(m²·K)

v1.2.0 · verified 2026-10-06

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Climate Pro attic R386.692 m²·K/WBack to answer ↑

Explore the verified data

5 matching rows · 5 in this subset

Insulation R-Value Chart, metric display
Product / attic targetThermal resistanceMinimum installed thicknessR-value USActions
Climate Pro attic R111.937 m²·K/W109.22 mm11 h·ft²·°F/BTU
Climate Pro attic R193.346 m²·K/W182.88 mm19 h·ft²·°F/BTU
Climate Pro attic R305.283 m²·K/W281.94 mm30 h·ft²·°F/BTU
Climate Pro attic R386.692 m²·K/W350.52 mm38 h·ft²·°F/BTU
Climate Pro attic R498.629 m²·K/W439.42 mm49 h·ft²·°F/BTU

Climate Pro attic R11

Thermal resistance
1.937 m²·K/W
Minimum installed thickness
109.22 mm
R-value US
11 h·ft²·°F/BTU
More dimensions
Material-only inverse RSI
0.516 W/(m²·K)

Climate Pro attic R19

Thermal resistance
3.346 m²·K/W
Minimum installed thickness
182.88 mm
R-value US
19 h·ft²·°F/BTU
More dimensions
Material-only inverse RSI
0.299 W/(m²·K)

Climate Pro attic R30

Thermal resistance
5.283 m²·K/W
Minimum installed thickness
281.94 mm
R-value US
30 h·ft²·°F/BTU
More dimensions
Material-only inverse RSI
0.189 W/(m²·K)

Climate Pro attic R38

Thermal resistance
6.692 m²·K/W
Minimum installed thickness
350.52 mm
R-value US
38 h·ft²·°F/BTU
More dimensions
Material-only inverse RSI
0.149 W/(m²·K)

Climate Pro attic R49

Thermal resistance
8.629 m²·K/W
Minimum installed thickness
439.42 mm
R-value US
49 h·ft²·°F/BTU
More dimensions
Material-only inverse RSI
0.116 W/(m²·K)

How to use this data

RSI=RUS×0.1761101838. Thickness remains a product fact, not linear interpolation. Use the target in Blown-In with zero existing R to reproduce this named archived product point; enter the actual existing insulation separately.

    CHECK THE METHOD

    Worked example

    Archived attic R38 pairs with 13.8 in minimum installed thickness; RSI≈6.69219 m²·K/W. That RSI alone does not describe a complete ceiling assembly.

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    CalculatorBlown-In Insulation CalculatorCalculatorHeat Loss Calculator

    Continue the reference workflow

    ReferenceDuct Velocity ReferenceReferenceRound Duct CFM Chart

    Common lookup questions

    Can I use these values as a universal specification?

    Use the current exact product bag label before ordering. Material R-value is not whole-assembly R/U; framing, films, bridges and installation affect building heat loss.

    TRACEABLE DATA

    Sources, scope & verification

    Dataset v1.2.0
    Last verified:

    Five selected archived Climate Pro loose-fill attic product points, not a universal material table or climate-zone/code recommendation.

    Values are curated product facts or generated scenarios. Paid standards, complete catalogs and source diagrams are not reproduced. A verification date applies to this documented subset.

    Climate Pro attic thermal-resistance product facts ↗

    Type C · Johns Manville · BID-0018, July 2017; archived attic subset

    Selected product/model facts only; no copied catalog text, drawings or paid-standard tables.

    Full provenance & artifact record
    Source checked
    2026-10-06
    Use basis
    bounded-product-facts
    Artifact SHA-256
    No retained source artifact hash; see the stated source and verification record.