Adding tilt rails to already tilted roof

[anomaly_a]

The roof I want to put my solar panels on is south facing and about 20°. I know that ideally the panels would be closer to 30°.

I'm looking at the Ironridge rails and they have so mounts that can adjust the angle of the panels:

IronRidge Fixed Tilt Leg Mounts

IronRidge Fixed Mount Systems are for solar installations on flat roofs. They support a large range of tilt angles while resisting harsh environmental conditions.

www.altestore.com

What I'm trying to decide is whether or not upping the panels angles by another 10° is worth it and then if so, these feet say they are intended for flat roofs. Does anyone know if they'll work alright on an already slanted roof?

 

[chrisski]

As far as seeing if the extra 10% is worth it, I recommend using a solar calculator like in my signature block.

Personally, don’t think you’ll make back in extra energy the cost to tilt the panels by only 10%, but the math will say along with the different gains with the season.

 

[anomaly_a]

As far as seeing if the extra 10% is worth it, I recommend using a solar calculator lie in my signature block.

Personally don’t think you’ll make back in extra energy the cost to tilt the panels by only 10%, but the math will say along with the different gains with the season.

Thanks for that. Seems like 20 vs 30 vs 35 doesn't make a ton of a difference, especially since I have a ton of roof space and a ton of panels that I got for cheap. Adding a few more panels seems to make up for that extra tilt power. I'm pretty sure I was also going to put a lot more on the roof than I needed.