Spray Foam Vs. Fiberglass Insulation: Which Is Better For New San Francisco Homes

Spray Foam Vs. Fiberglass Insulation: Which Is Better For New San Francisco Homes, updated 2/27/25, 2:40 AM

Have you been wanting to build a custom home? Make sure you familiarize yourself with San Francisco’s latest insulation requirements before you start. Read USA Spray Me’s guide at https://usasprayme.com/blog/san-francisco-building-code-new-home-insulation-requirements-best-options.html to learn all about them!

USA Spray Me City: San Francisco Address: 800 Avenue H Website: https://usasprayme.com/

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Spray Foam Vs. Fiberglass Insulation: Which Is
Better For New San Francisco Homes
According to USA Spray Me’s guide, San Francisco’s
buildings must have a minimum external R-value of 3.5
or a combined R-value of at least 16 for external and
internal insulation.
Additionally, you’ll have to
consider U-factors for walls;
these measure the rate of heat
transfer through a building
element, with lower values
indicating better performance.
USA Spray Me’s guide says that two materials that satisfy these requirements include
fiberglass insulation and spray foam insulation.
Fiberglass is a relatively inexpensive, widely
available material that is recommended for
property owners looking for more cost-effective
options.
Conversely, while spray foam insulation has higher
upfront costs, USA Spray Me notes that it is a superior
sealant, reducing air leakage and preventing moisture
buildup indoors.
Although spray foam requires specialized equipment to install, property owners can hire USA Spray Me
for any insulation projects.

https://usasprayme.com/blog/san-francisco-building-code-new-home-insulation-requirements-best-options.html

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code-new-home-insulation-requirements-best-options.html