U-Value & R-Value Builder — Architectural Project Tools

Assembly basis

Assembly title

Element

Thickness / R display

User-entered ΔU correction (W/m²K)

Method / data-source note

U-value & R-value result

Add valid paths and layers to calculate.

—U-value · W/m²K

—U-factor · BTU/h·ft²·°F

—R-value · m²K/W (RSI)

—R-value · h·ft²·°F/BTU

—ΔU correction

Path	Fraction	R	U

Scope: plane-element estimate only. Confirm surface resistances, material design values, cavities, repeating paths, fasteners and correction methods. Ground/contact cases and 2D/3D junctions require their applicable methods.

Calculation method View formula, inputs and sources

Select an application type and calculate a result.

Method

—

Inputs used

Calculation trace

Assumptions and exclusions

Save / load

Name

Project

Saved data