As the main roof of my house is east/west facing, I was planning to fit a standard 20 tube panel to the rear, (south facing) pitched roof of the attached garage. This roof is hipped into the main roof at 90 deg and having measured it, is not big enough to get a standard square panel on. I've seen 10 tube high efficiency panels mentioned on the website, but can't see any detail for them. Does anyone know their actual dimensions and their output compared to the standard panel? (I'm presuming that as their tube diameters are bigger, it's not just a case of halving the standard panel size). Depending on size, I'm wondering if I could fit 2 x 10 tube panels staggered on the roof, or if output is comparable to the standard panel, maybe just fit one.
I'm fairly tied to this approach, (rather than considering east/west or wall mount), as the heatstore for my existng gas system has a spare solar coil and is situated inside the garage roof which would make the pipe runs short and easy.
