Solar panels on roof
Paul Young
2 years ago
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kevinande
2 years agoAustin Air Companie
2 years agoRelated Discussions
Where to buy small solar panels
Comments (13). The fan you mention is about 8.5 watts . . that's not gonna move a lot of air . . if that's just blowing on you to keep comfy; then fine. If you think it's gonna cool your greenhouse then I think you're mistaken. You gotta know how many CFM's ( Cubic Feet per Minute ) that you need to move to keep it cool or whatever. THEN you can pick a fan of proper size, THEN panels, battery etc. You mentioned a light too, using 130 watts. I hope you're talking about CFL ( Compact Fluorescent Light ) . . since you're gonna run from PV / battery. If you're talking standard incandescent, you're wasting 80 % of the energy to run it; to produce heat. CFL's use ~ 20% of the electricity to run, to produce the same amount of light. You can get CFL's in 12 vdc. I applaud what you're trying to do; but you'll be MUCH happier with the whole thing if you make sure you get the ventilation / lighting requirements met up front; and size the rest of what you need TO those requirements. I'll also suggest do NOT consider standard automobile batteries including RV or deep-cycle types, or the "gel cell" types for what you want to do. You will NOT be happy with their performance. You should use golf-cart types; or types specifically intended or PV systems. All uses have different needs and will not do well in other types of applications. I'll ditto Ebay as a possible source for panel(s) and perhaps other parts as well. Good luck . . . Bob...See MoreSolar panels on metal roof
Comments (16)I can't believe this thread is still going on! When I posted about a year ago our house was still a plan on paper. It's about 3 months from completion now, and our solar contractor just installed the PV panels on our metal roof. In the snow, no less. My partner has a little website with construction pics on the first page. At least today, a pic of the new solar panels attached to our standing seam Galvalume roof with S-5! clamps is on the upper right of the first page at the following link (the progress pics change often so it may not be there the next time you look). Here is a link that might be useful: Construction pics of my house showing solar panels...See MoreInstalling Solar Panel on Chemwood Roof
Comments (2)What kind of solar panels? PV or HW. We have hot water solar panels which are heavy, but if you go with photovoltaic which are very light you're probably alright. Roofing is designed so a 200lb maintenance man can move around and work on the roof in addition to the normal live and dead loads required by the building code. Our house has typical 30yr fiberglass roof shingles on a plywood subroof with building paper. The installation required adding some brackets, drilling some holes with flashing and sealing. It's inspected every year along with the a/c & back-up boiler and hasn't caused any problems....See MoreRoof loads and solar - confused over terminology
Comments (4)I have a call into the barn designer....waiting. I just learned about 'roof snow loads' vs 'ground snow loads'... they are different. Good roof snow load calculator: https://courses.cit.cornell.edu/arch264/calculators/example2.3/ Any suggestions for a very lightweight solar mount+panel solution? thanks again...See MoreElmer J Fudd
2 years agoElmer J Fudd
2 years agowwu123
2 years agoStax
2 years agolast modified: 2 years agoopaone
2 years agolast modified: 2 years agosktn77a
2 years agomike_home
last year
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