Adaptive Curmudgeon (who you should have in your blogroll anyway) writes some real gems from time to time. I'm torn between gleeful laughter and rancid commiseration.
He had a plumbing issue. It's been detailed in four parts. Highly recommended reading.
Mystery Plumbing I
Mystery Plumbing II
Mystery Plumbing III
Mystery Plumbing IV
I commiserate because I also am the proud (?) owner of a mid-to-late-19th-century farmhouse, which occasionally does odd things and has had six-plus generations of interesting work done to it.
If you recall early this year, what started as a simple shutoff valve replacement devolved rapidly into a complete remodel of the downstairs bathroom and replumbing the kitchen drains. It's never simple, and an $8 valve becomes a $3000 bathroom-and-kitchen project in the blink of an eye.
3 years ago