Corners

Exactly why I'm not worried about the 90's. I'm not quite sure how the tub is finished. I'll have to go look again and get back to you. What's wrong with the stub wall?

That's probably good practice in general, but I'm really not worried about this location. Just thinking generally, since this will be my personal home, I'll have an easy way to clean out these 90's if they ever were to get clogged by pulling the trap off at the bottom of the sink and putting a snake down there. That'd be easy. Also, just thinking about clogs, if anything going down the drain can pass the 90's in the trap, it's not going to get stuck in the other 90's. It's not like I'm going to have turds going past those 90's. It's only going to see water from the sink drain. Thanks for the replys. I love discussing this stuff. What exactly do you mean by a weather barrier?

No problem. Just attach a picture in the regular fashion and submit the message. Then, go back and view your message. Click on the picture. You’ll get the URL for the picture. Copy the URL (right click or ctrl+c). Then, go back to the message and go into the edit mode. Use the insert image icon where you want the image to go. You should get the [ img] [ /img] in your message. Paste the URL between the [ img] and the [ /img]. It should look like [ img]http://www.XXXXXXXXXXXXXXX.jpg[ /img] Resubmit the message. Done

To stop the condensate from forming on the pipes, install anti-sweat insulation as the previous poster mentioned. It wouldn't take much to stop it. However, I must ask, what's the humidity in your home that is causing the condensation? Are the walls wet? Does the basement have water problems that would cause the basement's RH to be high? You may consider running a dehumidifier in the basement to prevent this from happening.

Thanks for the reply. Yeah, I agree with the insulation. It's not right. Good call on the insulation behind tub. I'll get that fixed when they fix the other walls. I keep telling the builder, but he's not doing much. I'm supposed to get back with the city engineer tomorrow, so hopefully he'll force him to make the fix ASAP (they've already hung the sheetrock and finished mudding, but I told him BEFORE any sheetrock is up. I guess he wanted to turn a 20 min job into a 3 day job.) Not quite sure about the window comments. I guess I must tell you that it's not a glass block window. It's a vinyl pre-framed acrylic block window, which is much lighter than glass. It appears to be installed in the same manner as other vinyl windows. It meets IRC Section R613, IMO. But if you have other reasons for concern, please let me know. I personally don’t have a problem with the two 90’s in this location. There is a cleanout located within 40 ft, meeting IRC P3005.2.4. Then, the only flow these two 90’s will see will come from the sink (this is the second floor nothing else is above it.). Are there any specific scenarios you’re worried about? Even if it were a code violation I’m overlooking, I’m not worried about this particular branch due to its location.

Brief bio. I'm a licensed PE and I'm going to start inspecting homes starting this summer. I still want to educate myself just a little further until I start (which is why I've been lurking here for a while and there's nothing worse than in incompetent PE). I'm currently building a new house. See the attached picture. In the bathroom, all walls shown are exterior, and the wall on the left of the pic is north facing. The insulators installed faced insulation facing the exterior of the home. I told the builder what happened and to turn the insulation around so the facing will face the warm-in-winter side of the wall, as the IRC requires. Since then, he has done nothing and the drywall has been hung. I've told him several times he needs to take the sheetrock down, re-insulate the wall so the vapor barrier is on the interior, then re-hang the sheetrock. Still nothing. So, I called the city engineer, and he too thinks that it's strange that the insulation is backwards and that he would check with the builder to ask him. The city engineer got back to me the next day and he said the builder said his insulator said (follow that?) that was the trade standard to turn the insulation backwards in bathrooms. This makes absolutely no sense to me. Here's what I know. IRC says the vapor barrier needs to be on the warm in winter side of the wall, and the insulation manufacturer (Owens Corning) says the same thing. Has anyone heard of reversing the insulation facing in bathrooms? Am I missing something? Download Attachment: No Vapor Barrier - Master Bath North Wall.jpg 159.01 KB Download Attachment: 200522715335_No Vapor Barrier - Master Bath North Wall.jpg 79.99 KB