Across the hills from Santa Rosa
Spray Foam Insulation in Napa, CA
Hot summers, a flood-prone river and a lot of remodeling since 2014.
- Free on-site estimates
- Itemized written quote: material, thickness or depth, and R-value per area
- Air leaks, wiring and moisture checked before anything gets covered
Heat, River and Remodels
Spray Foam Insulation in Napa deals with hot summers and a history of floods, quakes and fire. Wikipedia records that Napa hit 114°F on September 6, 2022, and dropped to 14°F on December 22, 1990. Heat waves above 100°F happen, and nights occasionally freeze. The rainy season runs from October to April.
The river
In 2005 the Napa River flooded the entire downtown area and destroyed 1,000 homes across the county; the Napa River Flood Project has been underway since the late 1990s. For homes in low areas we check crawl spaces for moisture before insulating floors.
Quake repairs
In 2014 a magnitude 6.1 earthquake struck the Napa area. Many homes were repaired or remodeled afterward. When walls are opened for repairs or remodels, that is the time for spray foam.
Fire
In October 2017 the Atlas and Partrick fires burned parts of Napa County, and in 2020 the Glass Fire destroyed 107 Napa County homes by early count. Rebuilds are insulated to plans; surviving attics can be checked for smoke.
Zone and housing
OpenEI lists Napa County in climate zone 3C. The 2020 census counted 31,071 housing units in the city, 5.5% vacant.
Older neighborhoods
Napa was incorporated in 1872, and the neighborhoods closest to downtown hold its oldest houses. Older homes like these often need attic sealing, floor insulation where there is a crawl space, and wall dense-pack. Mid-20th-century subdivisions such as Alta Heights and Westwood have their own patterns; homes of that age commonly have thin attics.
Ducts and heat
On days over 100°F, attics with ducts get very hot. Sealing ducts and burying them in blown-in, or foaming the roof deck, keeps cooling where it belongs.
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What to Know in Napa
- Temperature extremes. Napa's record high is 114°F (September 6, 2022) and its record low 14°F (December 22, 1990).
- 2005 flood. In 2005 the Napa River flooded the entire downtown area and destroyed 1,000 homes across the county.
- 2014 earthquake. In 2014 a magnitude 6.1 earthquake struck the Napa area, centered 3.7 miles northwest of American Canyon.
- Housing. The 2020 census counted 31,071 housing units in Napa, 94.5% occupied.
Napa Questions
Do you work in Napa?
Yes, we come over the hills to Napa regularly.
My walls are open after quake repairs. Can you foam them?
Yes. Open walls are the best time for spray foam.
What about homes near the river?
We check crawl space moisture first and choose materials that handle damp conditions.
Can you insulate a Victorian in downtown Napa?
Yes, working from the attic and crawl space and dense-packing walls with care for plaster and trim.
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