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It has been, like, 15 years since I did a bunch of research on this for my own home, so I can't offer specifics. The bottom line I came to was that the people recommending duct cleaning are overwhelmingly people who make money from that recommendation. I recall seeing an EPA website that said...

In the past 20 years, the largest OK earthquake was 5.8 which doesn't seem like much to get excited about (discounting New Madrid activity). Based on 8 years as an engineering geologist, 22 years related to foundation construction, I think you should talk to a geotechnical engineer before the...

Your replacement riving knife does not need to be metal. Much easier and cheaper to make one from wood:

I have only heard of this for pipes larger than anything residential.

If that contractor is still in business, give him a Yelp review. Great work deserves accolades.

Not specifically relevant to this thread, but as general info regarding concrete work: The early part of my career was mostly writing soil engineering reports for residential construction and our work occasionally included investigating the cause of failed slabs in existing houses. Every one of...

Nobes, my post you commented on is over 2 years old. You are much more likely to get responses if you start a new thread. Pictures are also much more likely to garner responses. Imperial units would too.

Let us know how it works!

I am very happy to hear you think my solution will work. I went ahead with it because: a) I was under time pressure to make the bathroom usable; b) even if it doesn't flush well, it likely buys me a year or more; and c) it is really easy to remove and start over. I considered this option but...

Soaked it a couple times over two days ... ... but nothing budged. No doubt in part because the cramped area limited my leverage and the size of tool I could use (I have a 24-inch pipe wrench I have never used. If only I had known this was going to be a problem before ai installed the vanity)...

Good idea.

My version of a trap will not doubt have trouble sooner than a standard one but replacing one of the elbows with something like the sediment filter I showed should improve it substantially and make it easier to clean. I saturated that nut with penetrating oil and tapped on it with a hammer...

Snoonyb, my computer shows I did post in the plumbing forum - is that not where you see it? I had never heard of a sediment jar but I presume something like the one below is what you have in mind. When it becomes necessary to clean the trap, I can simply replace an elbow with one of these...

Here is the solution I came up with. I didn't want the deep trap that would have resulted from using the J trap shown in the 2nd of my original photos. Instead, I used two elbows, an extension tube, and an extender on the tail piece to turn everything under the sink into one big trap. it is...

Snoonby, thanks for the reply. If you look at my first photo, the problem is that elbow at the drain pipe which the trap is attached to in the second photo. I am worried that 70+ years of rust, corrosion, etc. could cause problems if I remove the elbow. So the question is, how do I make this...

I really do not want to remove the existing elbow from the drain pipe. It is original to my 72 year old house and I don't want to risk having to get into the wall if something breaks. The tail piece from the drain in the new sink is in a different location than the old one. the bottom of the...

Purchased Keeney K820-75 push button bathroom sink drain. Instruction say: 1) remove the locknut, friction washer and drain washer; 2) apply drain sealant to underside of drain flange then insert it into drain opening; 3) from underside install the drain washer, friction washer and locknut. The...

About 15 years ago I used my brothers high-end worm drive saw and loved it - light, quiet and powerful. I have wanted one ever since but my damned Black & Decker saw I bought nearly 50 years ago just won't die. Because of that, I recommend looking at most tools for homeowner use as a...

Sounds very likely the problem is oil from your head, though I don't know why that would feel sticky. If the paper is already coming off the drywall, aggressive cleaning is likely to remove a lot more of it. The underlying gypsum would then absorb moisture from latex paint and there is a good...