Looking for advice on adding rock wool as shown in the photo. I am in south Louisiana, so mostly hot and humid. This is a metal building house with 3” closed cell spray foam on ceiling. I had some R-13 mineral wool insulation left over and would like to put it on this second floor loft ceiling to help with noise/heat.
would the small airspace between the closed cell and mineral wool cause any problems with condensation or other issues? Thanks for any help.
Shouldn't. Closed cell foam against the roof is best practice. As long as you don't have any air leaks introducing warm humid exterior air into that space you should be okay. Laying it horizontally behind the framing like you have it is fine.
Exterior-facing wall in bathroom had zero insulation. House is in Philadelphia. Exterior: Brick; Interior: Cinder block, 3/4" air space, furring strips, metal mesh, several inches of mortar, then tile. I removed everything, down to the cinder block. My concern is getting the best possible insulation and air flow stoppage, without creating a potential moisture/mold issue. Here's what I'm dealing with. Advice and suggestions are greatly appreciated - the more I'm researching it, the more confusing it's getting!
[img]https://cimg8.ibsrv.net/gimg/www.doityourselft.com-vbulletin/640x854/20220805_15_640_9b3c14e77de008913ea83b34ad6d75ccc50075d2.jpg[/img]Read More
I seem to have stumped the panel on my last post, regarding insulating a masonry wall after removing tile ([url]https://www.doityourself.com/forum/insulation-radiant-vapor-barriers/638075-help-need-insulate-cinder-block-brick-wall.html[/url]), so here's a question that's hopefully easier: Before I insulate and frame up that wall and either sheet rock it or use shiplap to finish it, would it be a good idea to use some masonry paint to "seal" up the cinder block a bit first? Concerned about creating a "multiple vapor barrier" situation. Thanks!
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08-13-22, 07:13 PM
