At a Glance Heat-Sheet Heavy doubles as a radon diffusion layer when flipped upside down, creating open under-slab air channels without relying solely on gravel. Proven performance through NRC testing — outperformed a traditional 4″ gravel layer by 50% in airflow efficiency, with no risk of settling over time. Versatile for different builds — works […]
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Whether you are just starting out or well on your way toward your next big project, we would love to hear from you.
By submitting the form, you agree to our Terms and Conditions and our Privacy Policy. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Whether you are just starting out or well on your way toward your next big project, we would love to hear from you.
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