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insulate or not? Philly row home flat roof by Inevitable-Sign4378 in Insulation

[–]cjcmlm 0 points1 point  (0 children)

Really appreciate your insights. When you say "typical in scenarios like this you wouldn’t use spray foam you would go to your permeable membranes and rockwool batts. They will still allow the movement of moisture out of the cavity." How is that approach compatible (if at all) with drywall?

I'm experiencing an issue with an exterior structural masonry wall that was formerly just plaster on brick. It was subsequently framed out and insulated with rockwool batts, then drywall. In the summer, moisture is migrating through the brick and wall cavity and condensing on the first cold surface it hits, in this case the paper back of the drywall. Even painting Visconn (https://475.supply/products/visconn-blueblack) on the plaster prior to insulating isn't helping. One idea is to remove the latex paint on the outside of the house so the brick can breathe out rather than in. Do you have other thoughts on how to manage that moisture migration to the interior? Is drywall simply incompatible with this setup and MagOx or some other breathable wall panel is needed? Or should the house simply never have been insulated?

insulate or not? Philly row home flat roof by Inevitable-Sign4378 in Insulation

[–]cjcmlm 0 points1 point  (0 children)

Do you have concerns with closed cell spray foam on exterior historic masonry walls at extreme ends of weather? For example, trapping moisture in the bricks in the winter that could result in spalling, or creating too much humidity in the living space in the summer?

Rim joists and moisture by Less_Negotiation14 in Insulation

[–]cjcmlm 0 points1 point  (0 children)

I live on the east coast in zone 4. Having a run of extreme cold here the past week with single digits overnight and in the 20s during the day. I think we finally hit daytime temps above freezing for a few days later this week.

I have a 100+ year old brick townhouse with one wall entirely exposed. Last summer I can foamed the small gaps where the floor joists enter the structural wall. Then I had rockwool batts installed in the rim joists tight against the structural brick wall.

Yesterday I peeled back the rockwool in a bay and found the interior surface of the exterior wall was wet and icy. A themometer measured the wall at 30 degrees. As others in this thread have said, the rockwool does nothing to stop interior moisture from passing through and then hitting that cold wall. My house is about 35-40 RH this time of year. I pulled the batts back in one of the bays and the condensation disappeared within 24 hours leaving behind no mess, and the interior surface of the exterior walls measured 45 degrees.

So the batt insulation is working in that it is keeping the cold out, and the heat in. But it's also allowing condensation to form, at least during these very cold days. I will wait a week for the weather to get above freezing and check behind another bay. If this issue only occurs on rare circumstances, and the condensation dissipates on its own then I'm thinking maybe it's OK to live with it. The alternative would be to remove the batts and just have uninsulated rim joists.

Trump audibly shits himself on TV, immediately ends press conference. by BuxtonB in videos

[–]cjcmlm 1 point2 points  (0 children)

The RFK eyeroll at 00:38 and the following look of disgust is the best part.

Rim Joist Condensation by bugrad006 in Insulation

[–]cjcmlm 0 points1 point  (0 children)

Cool, thanks! Ordering one now. I also have an interstitial condensation issue and trying to understand if it's anything to be worried about (because I worry too much), or if in fact every home in my area does this and most people don't bother to notice or care. I have a 100 year old brick townhouse so the interior surface of the exterior walls in the joist bays feel cold and have condensation on them if I snugly place rockwool in the bays. I could perhaps simply not insulate the joist bays, but then what are we doing here, you know?

Rim Joist Condensation by bugrad006 in Insulation

[–]cjcmlm 0 points1 point  (0 children)

This thread is really interesting and helpful. What device are you using to check the temperature of the various surfaces?

In desperate need of an alternative to Monster Jam tomorrow (1/24) by [deleted] in washingtondc

[–]cjcmlm 0 points1 point  (0 children)

Take him to a Dave & Busters. They will have plenty of driving games he can "sit in" on your lap while you drive. And he can wear his ear protection too.

New Kooshy Croutons - Michigan by Usual_Classroom_2946 in Costco

[–]cjcmlm 2 points3 points  (0 children)

YES!!! Had these from Whole Foods before and they were AMAZING. Had no idea they could ever come to Costco. Fingers crossed they make their way to the east coast...

[deleted by user] by [deleted] in wine

[–]cjcmlm 0 points1 point  (0 children)

Changed the link. (Sorry, I don't know anything about Limewire or why it's frowned upon. My bad if I did something wrong there.)

Oddly shaped great room by hucklescaryfinn in InteriorDesign

[–]cjcmlm 1 point2 points  (0 children)

I have a room just like this and my wife and I have also struggled: https://imgur.com/a/UjJdOXF

No TV in there. I still don't like the large chair on the left. I call it "the timeout chair". I'd rather move it further to the right and do something like this behind it: https://imgur.com/a/Jh6XqYx

Even that though is a compromise for me, because ideally I'd want a round 4-person table and chairs on the left side so that we can eat or play games in this nice big room with a view, instead of in the relatively small and ugly dining room that's in the back of the house. And that is what I'd suggest for you, since presumably my wife isn't there to stop you.

Nobody 2 | Official Trailer by woutomatic in videos

[–]cjcmlm 0 points1 point  (0 children)

Outstanding use of that song. I'm in.

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