Bus. & Prof. Code, § 19020 · Article 1. General Provisions

Bus. & Prof. Code, § 19020

Verbatim from the official edition

Text — As published in the Legislative Counsel's database, tables dated October 18, 2026 (pubinfo_2025.zip)

“R-value” means a measure of thermal resistance of material or composite materials. “R-value” is equal to the reciprocal of the conductance of a given material, or

R-value = 1

conductance of the material

where the conductance of the material is: Btu (hour × square foot × Fahrenheit degree average temperature difference between two surfaces).

Notes and commentary — not statutory text

History

Added by Stats. 1984, Ch. 1456, Sec. 3.

Source of truth

Edition: As published in the Legislative Counsel's database, tables dated October 18, 2026 (pubinfo_2025.zip)
Official file: https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=BPC&sectionNum=19020.
Text hash: sha256 24bdb4a2dfe75160b39ace1a075a64def61bd303b1c9c9b4327bc063741c1575
Composed by: compose_ca.py 2026-10-22: the Legislative Counsel's CAML content files read by a tokenizer (caml_readers.reader_a); an independent xml.etree reading (caml_readers.reader_b) agrees on every section

Procedural information only. Not legal advice and not a substitute for the advice of an attorney. Confirm the current text with the official publisher before relying on it.