Denray Posted August 24, 2015 Report Share Posted August 24, 2015 Does this pony wall that is covered on both sides by plywood need to be vented? Seems like it. Click to Enlarge 27.09 KB Quote Link to comment Share on other sites More sharing options...
kurt Posted August 24, 2015 Report Share Posted August 24, 2015 Need? Not sure. I could imagine some good reasons for it though. Quote Link to comment Share on other sites More sharing options...
Denray Posted August 24, 2015 Author Report Share Posted August 24, 2015 Google cripple wall venting and you see stuff like this. Click to Enlarge 14.7 KB Quote Link to comment Share on other sites More sharing options...
Marc Posted August 25, 2015 Report Share Posted August 25, 2015 To me that diagram tells you how to install the vents, not whether or not you need them. I'd suggest a more macroscopic understanding of the crawl is needed to answer your question. Marc Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted August 25, 2015 Report Share Posted August 25, 2015 Is that a shear wall that's enclosed within the perimeter of the crawlspace? If so, I don't see any need for venting. Quote Link to comment Share on other sites More sharing options...
kurt Posted August 25, 2015 Report Share Posted August 25, 2015 Yes, if it's inside the crawlspace as a support wall, I'm not sure what venting gets you. I'm also not sure what it gets you if it's located elsewhere depending on lots of variables, primarily what part of the country you're in. Maybe in California it's part of what you do. I don't know about California. We know the insulation and ventilation codes and standard practices are wrong in many instances; one size does not fit all. Quote Link to comment Share on other sites More sharing options...
Denray Posted August 25, 2015 Author Report Share Posted August 25, 2015 Yep, when in the interior then one side shouldn't be any colder than the other. Quote Link to comment Share on other sites More sharing options...
Steven Hockstein Posted August 25, 2015 Report Share Posted August 25, 2015 Assuming that both sides of the wall are interior spaces I can't see a reason why you would need vents. If all enclosed interior walls needed ventilation you could argue that there be vents in every wall. The exception would be if there is a difference in temperature between both sides of the wall there could be some vapor drive through the wall that could result in some condensation. Quote Link to comment Share on other sites More sharing options...
mlparham Posted August 25, 2015 Report Share Posted August 25, 2015 A shear wall. A nice observation. I would recommend not modify a shear wall. Quote Link to comment Share on other sites More sharing options...
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