Radon Contractors in Golden, CO

Radon contractors in Golden work the foothills as much as the town, and Evergreen is by far the most common service area. Five businesses are on the page. Three install radon mitigation systems, one tests only, and one is a general contractor.

American Radon Mitigation in Golden designs custom systems aimed at getting levels as low as possible, not just under 4.0 pCi/L. It guarantees an annual average of 1.5 pCi/L or less for five years and reports a post-mitigation average of 0.4 pCi/L. It is rated 4.9 from 99 reviews, the largest review history among Golden's installers. Diagnostic monitoring and pressure field extension testing guide its system design. It also handles commercial and multifamily work, real estate transactions and repairs to existing systems, and backs its work with a guarantee. Martens Radon is also Golden-based, serving the Denver metro area, Evergreen and the foothills. It is licensed under Colorado RMT.0000225, prices each home in person after a free on-site assessment with a written quote, and does mostly sub-slab depressurization retrofits. It is rated 5.0 from 36 reviews.

That method matters here because the work is mostly retrofits. Sub-slab depressurization, or sub-membrane depressurization for a crawl space, is usually the most effective fix, while sealing cracks alone is not recommended. American Radon Mitigation and Martens Radon both install sub-slab systems, and Martens adds crawlspace work. Before any of that, a long-term test of 91 days to a year gives a truer picture of a foothills home across the seasons.