brucet999
Active Member
I haven't seen self-adhesive snow stops. How well would you expect them to adhere to grooved glass?
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Tesla launching Solar Roof V3
- Thread starter Shygar
- Start date
brucet999
Active Member
There was such a roof displayed, along with a French slate version, in the initial dog-and-pony show. Presumably those versions will come quite some time after production of the flat, grooved-shingle version ramps up.
Isn't it more wavy than grooved? That might require a different design than the normal metal roof versions, or a bit of adhesive to fill the gaps.
Yeah, I think Elon said 6 months to a year between versions on Friday's announcement call..
TheTalkingMule
Distributed Energy Enthusiast
This is going to be absurdly popular.
40% cheaper than V2! 8 day installs with a plan to get down to 8hrs. The world sure is changing fast!
40% cheaper than V2! 8 day installs with a plan to get down to 8hrs. The world sure is changing fast!
From this page, Solar Roof | Tesla
- Hail Rating
Class 3 ANSI FM 4473
(up to 1.75" diameter hail)
brucet999
Active Member
Any idea how this rating stacks up to other roofing materials? Especially tiles?
My Brava composite (not to be confused with asphalt composition) roof tiles are impact rated to UL's highest level, class 4. That is a 2" steel ball dropped twice from 20 feet, impacting the same point on the tile.
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brucet999
Active Member
I just looked up the referenced ice ball test
https://www.iko.com/na/wp-content/u...est-Standard-for-FM4473-Impact-Resistance.pdf
Class 3 = impact of 14.95 foot pounds (20.3 joules).
Class 4 with 2" ice ball = impact of 26.8 ft lb (29.5 joules)
Didn't the original Tesla Roof release data show comparative steel ball tests vs three other tile types?
I must be adding up the solar calculator wrong I come up with a ROI of 23 years on my Home. Hopefully in a few years it will cost the same as a asphalt shingle roof
That does seem high...
Even it that is correct - what's the 'ROI' on the asphalt shingle roof? I bet it's more than 23 years...which would make Solar Roof cheaper already
There is no ROI for asphalt roof, rather it is a depreciating asset.
Was that 23 for the total price, or the price delta?
Even at a 23 year payback, rolling solar into a 30 year mortgage or home equity loan gives you a positive return from day 1 compared to standard roofing.
doghousePVD
My grandfather’s car
Asphalt roofs are crap in Maine. My sister loses shingles every winter. 15 years is typical.
woferry
Member
They can be crap in CA also. My inspector noted that my house had what appeared to be a 10 year roof that was already over 10 years old (and the previous homeowner who was in for just about 10 years admitted they hadn't replaced the roof). Granted it lasted another almost 15 years before it was replaced, but shingles blew off with almost every storm, and I'm pretty sure water got through it as well, the only thing I had going for me was the original shake roof was still underneath (apparently a code violation to leave it in place, but clearly the last person to replace the roof didn't care), and that seemed to be sound enough to redirect whatever water got underneath to the edges, so my fascia boards were warping like crazy but at least no water got into the attic/garage. But in any decent wind you'd see a bunch of shingles flap up like those air-brake features when NASCAR cars get turned around. 
brucet999
Active Member
To this day, even on 25 year warranty asphalt composition roofs, the ridge caps deteriorate in 10 to 15 years; because they start out with minute cracks along the bend-line during manufacture.
