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Radon in Old Homes: Fieldstone, Dirt Floors, and Expert Fixes
Learn how fieldstone foundations, dirt cellars, and joined additions affect radon in old homes, when to test, and how to verify professional mitigation.
Subslab Depressurization: Homeowners and Pros Must Check Test Results
Learn how subslab depressurization works, assess proposals for ANSI/AARST certified installations, and confirm performance through postinstallation testing.
At 4 pCi/L, Homeowners Should Confirm Radon Test Results First
Learn what radon test results below 2, from 2 to 3.9, or at least 4 pCi/L mean, when to retest, and how homeowners confirm readings before mitigation.
Radon Has No Smell: What Homeowners Should Test For at 4.0 pCi/L
Radon has no smell. Learn where and how to test, why 4.0 pCi/L is the EPA action level, and the practical mitigation steps or when to hire a pro.
Avoid Underwriting Delays: Radon in Apartments for Multifamily Owners
A compliance checklist for multifamily owners and lenders: sampling math, HUD/ANSI standards, mitigation design, and verification at 4.0 pCi/L.
Cut Crawl Space Radon Below 4.0 pCi/L for Homeowners With Verified SMD
Sub membrane depressurization is the proven crawl space radon fix. Read site specific design and why post install verification matters.