Building Codes
San Francisco Building Code: New Home Insulation Requirements & Best Options
Summarizes San Francisco/Title 24 insulation requirements for new homes: ceiling R-30 to R-38 (R-49 in colder climates), maximum wall…
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11 articles
Building Codes
Air Sealing & Insulation to Pass Title 24 in 2025–2026 – A Practical Guide
Practical guide to passing California Title 24 Part 6 in 2025-2026 through air sealing and insulation: mandatory vs prescriptive vs…
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Building Codes
San Francisco Green Building Code Requirements: Best Insulation Options
Summarizes San Francisco Green Building Code (SFGBC) insulation requirements (R-38 ceilings, R-21 wood-frame walls, R-30 floors, R-19…
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Building Codes
San Jose Building Code: New Home Insulation Requirements & Best Options
Explains San Jose's Title 24 insulation requirements for new homes (R-38 ceilings, R-13 exterior walls as examples, varying by climate…
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Building Codes
Oakland Building Code: New Home Insulation Requirements & Best Options
Explains how Oakland's new-home insulation rules follow California Title 24, with minimum R-values of R-38 attics, R-15 walls and R-19…
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Building Codes
Santa Rosa Building Code: New Home Insulation Requirements & Best Options
Outlines Santa Rosa's new-home insulation code: R-38 ceilings, R-13 walls, floors varying by design. Compares spray foam ($2.00-$9.00/sq…
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Building Codes
Santa Rosa Green Building Code Requirements: Best Insulation Options
Reviews four insulation materials (fiberglass, cellulose, spray foam, mineral wool) for Santa Rosa's warm summers and damp winters, framed…
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Building Codes
Oakland Green Building Code Requirements: Best Insulation Options
Overview of Oakland's Green Building Ordinance insulation and energy-efficiency requirements, followed by four eco-friendly insulation…
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Building Codes
California Recycling Center Construction Laws Explained
Walks through what it takes to build a recycling center in California: building permits (site plans, elevations, perspectives, materials…
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Building Codes
Berkeley Green Building Code Requirements: Best Insulation Options
Frames Berkeley's Climate Action Plan goal (80% emissions cut below 2000 levels by 2050) and surveys five insulation types with…
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Building Codes
Berkeley Building Code: New Home Insulation Requirements & Best Options
Summarizes Title 24 insulation minimums as applied in Berkeley (R-13 for 2x4 walls, R-20 for 2x6 walls, R-22 attics, plus R-4 continuous…
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