One Common Testing Mistake Causes Lakewood Homeowners to Underestimate Their Radon Levels

Placing a test kit near an exterior door, in a frequently ventilated laundry room, or on an upper floor of a Lakewood home produces readings that can be 30 to 50 percent lower than the actual radon concentration in the lowest occupied space. That error isn't a technicality — it's the difference between deciding to mitigate and deciding to do nothing while radon continues accumulating at actionable levels. The EPA's testing protocol specifies device placement in the lowest livable area, away from drafts and high-traffic ventilation paths, because that location captures the worst-case exposure your household actually experiences. Master Mitigators follows those placement standards precisely, which is why our test results hold up for mitigation planning, real estate disclosure, and lender review.

Lakewood's position along the Front Range urban corridor — bordered by the foothills to the west and the Denver metro basin to the east — places virtually all residential neighborhoods within EPA Zone 1 radon territory. Homes near Bear Creek or along the W. Colfax corridor are not measurably safer than newer construction farther east; foundation type, sub-slab material, and interior air pressure matter far more than age or location within the city.

Short-term tests run for 48 to 96 hours under closed-house conditions and are the right choice when a real estate transaction requires results within an inspection window, or when a homeowner needs a baseline reading quickly after a disclosure concern arises. The limitation is that a single short-term test captures a snapshot — radon levels fluctuate with barometric pressure, soil moisture, and season, so one test may read lower or higher than the long-term average. Long-term tests, which run for 90 days or more, capture those fluctuations and produce an annual average that more accurately reflects your household's actual cumulative exposure throughout heating and cooling seasons.

In Lakewood, where winter heating creates strong negative pressure that pulls more soil gas indoors, a long-term test installed in the fall through winter period often reveals meaningfully higher radon averages than a short-term summer test on the same property. Understanding which test type matches your purpose prevents you from acting on misleadingly favorable data — or spending money on mitigation that a follow-up test would have shown was unnecessary. Contact us today to schedule radon testing services in Lakewood and match the right method to your specific situation.

Not all radon tests deliver equivalent reliability. These are the criteria that separate a defensible certified result from a reading that may not hold up under scrutiny:

• Device placement in the lowest livable level of the home — not a crawl space, garage, or upper floor — as specified by EPA and Colorado DPHE protocols
• Closed-house conditions maintained throughout the test period, with windows and exterior doors kept closed except for normal entry and exit
• Laboratory analysis returning a pCi/L reading with device serial number, chain-of-custody record, and certified calibration documentation
• Short-term tests conducted for a minimum 48-hour exposure period; long-term tests for at least 90 days to capture Lakewood's seasonal radon variation
• Written report formatted for real estate disclosure, lender submission, or mitigation system design — not just a lab printout with a number

Homeowners who evaluate their testing options against these standards end up with results they can use — not just numbers that raise more questions. Get in Touch to schedule certified radon testing in Lakewood and receive documentation that supports whatever decision comes next.