Wow. This one photo from that site is terrifying. Someone cut into a beam:
This is just funny. I mean, until someone sits down.
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That could keep Walt’s pizza hot!
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It’s a bad bundle of shingles. These shingles were staggered back and forth 6", which is a common method of installation. If you’ll look closely, the damage also staggers back and forth and is contained to that run of shingles.
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While this is most likely a picture of a toilet that some numpty connected to a hot supply line, it’s also possible that the picture was taken in Arizona during the summer. Houses built in the 60’s to the early 90’s generally did not have insulated supply lines, unless the builder or homeowner took the trouble to do that. As a result, the water in them tends to sit at the ambient temperature in the attic of the house. the air temp in the attic spaces can reach well in excess of 120 in the middle of a july day here, and the water sitting in the pipes heats right up.
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I agree completely. Looking closely, the damage staggers up the side, shingle by shingle.
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That’s a good catch - if the sun and backboard were doing the damage, wouldn’t the damage be in an arc, as the direction of the sun changes throughout the day?
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You can, but only with convex lenses as used by someone with extreme farsightedness. Since nearly everyone w/ glasses is nearsighted, yeah in general it won’t work.
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Doesn’t work. Under the best of circumstances the sun will pass directly over the goal on two days of the year (and in most of the US, on no days at all). Since it crosses mostly at an angle, the reflection is mostly at an angle but the pattern doesn’t show that.
And in any case, if that could happen, then similar patterns should be seen over the entire roof on any East/west oriented house in most of the US since that means the entire roof gets southern sun all day every day.
I don’t know how these things are made, but I’m going to go out on a limb and guess that the manufacturing tolerances aren’t that great so there is some minor density variation. If they happened to stumble on one whose density variation is more or less from the center outward, it would function like a graded index lens.
I don’t buy the “bad batch of shingles” theory either, since you generally work from the top down, row by row. More likely a a bad/missing section of the tarpaper/roofing felt underneath the shingles. But that too, is usually rolled horizontally. My guess is something in the attic got to hot and damaged the plywood underneath.
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No, just no. Shingles are applied laterally in rows not bertically in columns. If it were bad shingles the damage would run horizontally along the rows run using that bundle.
Y’all got trolled there.
The installation method is called racking and many shingle manufacturers provide instructions on the back of shingle packages describing it. You can go to the GAF, Certainteed or other manufacturers websites for a description or if you Google around a little, you can also find people warning against it.
Of… there’s plenty of Youtube video demonstrating it…
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