3 ms·
His numbers are overly optimistic in most of the country where a 2/12 pitch roof is uncommon, 4/12 - 9/12 is more common. Is 2/12 common anywhere? Certainly no
by Johnny555 8y ago
His numbers are overly optimistic in most of the country where a 2/12 pitch roof is uncommon, 4/12 - 9/12 is more common.
Is 2/12 common anywhere? Certainly not in any place that gets snow.
(he does give some numbers for other pitches in his charts, but in the teaser paragraph, he uses 2/12)
- Retric 8y agoIt’s not just the charts, “In Minneapolis, a 10/12 pitched roof that is perfectly north-south will have a 57% penalty between the south-facing and north-facing modules.” Really, you should not complain if you’re badly skimming an article.
- Johnny555 8y agoIf he gave some context in the beginning of the article where he exclaimed "Not great, to be sure, but probably not as bad as you might expect!" to say "But a 2/12 roof is very shallow" (and indeed is the minimum pitch suitable for shingles), I might agree. But you shouldn't have to get half way into the article before you find out that he chose the absolute best case for his example and you're not likely to see the same results in the real world.
- Retric 8y agoThe very next paragraph starts with ‘The tilt of the roof matters a great deal.’ Including a much worse example at 29% worse, but also a better one 1:12 which are not uncommon for that area. He then adds ordination of the building, and latitude as further examples. Really, if he had started by showing a huge chart it would have been gibberish to most people.
- deleted 8y ago[deleted]