https://www.radonlistserv.org/categories/4/rn-resistant-new-construction/feed.rss Thu, 18 Jun 2026 07:32:41 Z Rn Resistant New Construction - Radon ListServ en https://www.radonlistserv.org/discussion/291/appendix-af-of-the-2021-irc Wed, 04 Oct 2023 17:50:42 Z Doug Kladder 291@/discussions Appendix AF of the 2021 IRC requires radon testing after a house is essentially completed and that the test result be provided to the B.O. with results less than 4.0 pCi/L. If above 4.0 a passive system is activated and a second test is conducted with results less than 4.0 pCi/L. My question is... https://www.radonlistserv.org/discussion/297/ceu-on-radon-for-north-american-architects Fri, 06 Jan 2023 17:21:51 Z Bob Wood 297@/discussions I have been approached because of my knowledge of Canadian Building Codes to develop and present a CEU course on Radon and Building Codes. Part of the target audience for this course is US Architects, my knowledge base is very tiny in the US building codes world. is there anyone out there that can... https://www.radonlistserv.org/discussion/260/rrnc-soil-gas-matt-performance-data-needed-for-code-approval-in-denver Fri, 13 Aug 2021 14:14:32 Z Bruce Snead 260@/discussions Colleagues - appendix F is adopted in Denver. Code officials have rejected the soil gas matt/matrix option and denied approval of specific installations even though it has been a common option used in the area and is described in the CO Radon Reference manual. I/we need information any one has... https://www.radonlistserv.org/discussion/232/smoke-testing-of-membrane-below-a-slab Wed, 10 Feb 2021 16:13:44 Z Fred Ellrott 232@/discussions I have a school project that we are installing a Soil Gas Mat system below the slab. The school district wants the vapor barrier, 15 mil Stego, smoke tested before the slab is poured. I have an idea on how I am going to do this but maybe someone has already done it and has a better mouse trap. We... https://www.radonlistserv.org/discussion/217/minnesota-radon-rules Fri, 29 May 2020 22:05:24 Z Adam Michels 217@/discussions I received a notice about new Minnesota radon license requirements (enclosed). They say Illinois has the same type of regulations in place. I have quite a few opinions on this. Any thoughts from the group? https://www.radonlistserv.org/discussion/220/radon-testing-in-an-hour Thu, 21 May 2020 17:44:36 Z Karen Ahearn 220@/discussions Has anyone seen these Ecosense.io devices that claim they can do a radon test in an hour? My understanding from AARST is that NO test can be valid with less than 48 hours of measurement. This seems like a scam to me. And a dangerous one at that as there are certainly many inspectors who would jump... https://www.radonlistserv.org/discussion/169/sealed-poly-in-passive-crawlspace-system Sat, 18 Apr 2020 05:54:21 Z Doug Kladder 169@/discussions Has anyone experienced issues with poly in crawlspace sealed to walls, penetrations, etc. with a passive RRNC system. I have heard anecdotally that with high winds, that the poly has risen and fallen making noise in the middle of the night, etc. Obviously this would not be a concern if it was a... https://www.radonlistserv.org/discussion/132/rrnc-2-0-courses-available-in-myrtle-beach-930 Fri, 31 Aug 2018 17:05:54 Z Nicole Chazaud 132@/discussions RRNC 2.0: Course available at the AARST International Radon Symposium and Trade Show Sept 9/30/18 8:00 AM - Noon Course Description ID NRPP 500: In depth review of RRNC 2.0 with comparison to ASTM 1465 and Appendix F. Course will teach the attendee the basic principles of history of radon and radon... https://www.radonlistserv.org/discussion/51/helpful-architect Tue, 07 Nov 2017 17:02:19 Z Henri Boyea 51@/discussions A rarity: an architect actually drew in the radon pipe on the set of plans I looked at today! Yep, one "typical 2-inch radon pipe" for a 2000 sq ft basement, and nothing for either of the crawlspaces... Thanks for the help, buddy! https://www.radonlistserv.org/discussion/11/test-posting Thu, 20 Jul 2017 17:56:48 Z Dave K 11@/discussions 1,2,3