R.M. White Company
insulation
Serving Sioux City, IA
From Google Business Profile
4.8
4 Google reviews
Google categories: Insulation contractor
View on Google Maps →Last checked October 4, 2026.
More from Google Business Profile
Listed features
- Accessibility
- Wheelchair accessible parking lot
Photos on Google: 2
Recent Google reviews (excerpts)
Written by Google users, not by EdgeLocal. EdgeLocal has not verified them and does not show reviewer names.
5 out of 5 stars · Feb 2022
knowledgeable staff answered all my questions will definitely go back anytime I need insulation
5 out of 5 stars · Jul 2020
Dennis has always been helpful every time I’ve needed something, always above and beyond
The owner replied to 0 of the 4 most recent reviews Google showed.
From Google Business Profile, last checked October 4, 2026.
Iowa Contractor Registration
- Reg. #
- C099794
- Expires
- July 16, 2027
Source: Iowa Division of Labor contractor registration data, licensed under CC BY 4.0. Look up this registration
About insulation contractors in Sioux City
Insulation contractors add attic, wall and crawlspace insulation and air sealing. Insulation contractors perform air sealing, blow cellulose or fiberglass into attics and walls, install spray foam and rigid foam in basements and rim joists, and help homeowners qualify for energy rebates.
Typical cost: $1,800–$6,000 for attic insulation and air sealing. See the full cost guide
Typical U.S. ranges from industry sources (2024–25); not EdgeLocal data. Your quote will vary with scope, materials and location.
Questions to ask this contractor
- Ask for an energy audit: Blower door tests identify air leaks.
- Confirm target R-value: Northern climates typically aim for R-49 to R-60 in attics.
- Ask about air sealing: Insulation works best after air sealing.