Looking for a spray foam installer in Bel-Nor, MO? Describe your project once and up to five spray foam installers who work in Bel-Nor and St. Louis County get back to you with a quote. It's free and there is no obligation.
Bel-Nor is home to about 1,357 people (2024 Census Bureau estimate), a shrinking community (−2.9% since 2020). With 2,156 people per sq mi, it is a suburban area. Hot summers, cold winters and leaky older homes make air sealing a priority here.
Bel-Nor at a glance
- Population (Census Bureau estimate, 2024)
- 1,357 (−2.9% since 2020)
- Rank in Missouri
- 294th of 938 cities and towns
- Land area
- 0.6 sq mi
- Population density
- 2,156 people per sq mi (suburban)
- Type
- Village (Bel-Nor village)
- Main county
- St. Louis County
What to check before hiring in Bel-Nor
- Training: ask about applicator training and safety practices.
- Code: in Missouri, the energy and residential codes set R-values and barrier requirements.
- Rebates: utilities sometimes rebate insulation upgrades.
- Price drivers: area, foam type, thickness and prep.
Useful official resources
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U.S. Department of Energy: insulation
Official information and guidance.
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Spray Polyurethane Foam Alliance
Official information and guidance.
Services available in Bel-Nor
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Attic spray foam
Spray foam on the roof deck or attic floor, often to create a conditioned attic.
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Walls, rim joists and crawl spaces
Spray foam in open walls, rim joists, basements or crawl spaces.
Frequently asked questions in Bel-Nor
How much does spray foam cost in Bel-Nor, MO?
It depends on area, foam type and thickness. Describe your project: installers who serve Bel-Nor reply with a quote.
How long does installation take?
Often a day for a typical attic, plus curing time.
Can foam go over old insulation?
Usually old material is removed first; ask the installer.
Which spray foam installers will contact me?
Up to five independent spray foam installers who serve Bel-Nor and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.