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*The Angi rating for Radon Detection And Reduction companies in Lilliwaup, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

*The HomeAdvisor rating for Radon Detection And Reduction companies in Lilliwaup, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

Last update on July 16, 2025

Top-Rated Radon detection and reduction specialists in Lilliwaup - Updated Nov 2026

Avatar for 5 Microns Inc.
5 Microns Inc.
4.9(
74
)
Radon Gas - Testing

Serving Lilliwaup, WA and surrounding areas

Approved

In business since 2019

Free estimates

Small jobs welcome

"I am very pleased with service from 5 Microns. They were quick to communicate, showed up on time, very professional and promptly shared the test results."
Vinyl sheeting asbestos test
Wall asbestos test
Asbestos air test
Mold and moisture testing
Mold air test

+32

Response time3 hrs
Response rate98%
Recommended by100%of homeowners
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Palm Construction and Remodeling Inc.
4.2(
88
)
Radon Gas - AbatementRadon Gas - Testing

Serving Lilliwaup, WA and surrounding areas

In business since 2020

Free estimates

Offers commercial services

"Palm Construction recently replaced roof on my house and it was a great experience to work with Lee and his well organized team from Palm Construction. They did excellent job and my roof passed inspection with no issues. The quality of work and materials is excellent and my new roof looks fantastic. Also my whole house looks mush better now. Thanks!"
Response time2 days
Recommended by90%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
1.8(
4
)
Radon Gas - Abatement

Serving Lilliwaup, WA and surrounding areas

In business since 1988

Free estimates

Credit card accepted

SWAT Environmental is the nation's largest radon abatement engineer. Our experienced staff has corrected radon problems for over 60,000 customers since 1988 with 100% success!

Recommended by50%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

Installation typically takes 1-2 days, depending on the system and property layout.

Radon detection is crucial as prolonged exposure to radon gas, a leading cause of lung cancer, poses significant health risks in residential environments.

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

Use a radon test kit or hire professionals to conduct a detailed assessment of radon levels in your home.

The Lilliwaup, WA homeowners’ guide to radon detection and reduction services

From average costs to expert advice, get all the answers you need to get your job done.

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