Where do I nail Aluminum Fascia?
 

I read the Reader's Digest guide, which has great info on installing the soffit and fascia, but there's one detail missing.

I know that the fascia is supposed to be all pretty, but I'm going to be using stainless roofing nails to fasten it, and I don't know exactly where the nails should go! I'm assuming I need to nail up at the top, where it'll be covered by drip edge, but am I supposed to nail up through the bottom, through the soffit? Won't that crush the flange of the fascia up into the soffit? Or should I just nail horizontally through the bottom of the fascia and cover the nailhead with paint?

Thanks!

You should use a color coated nail that matches the color of your fascia. They sell ring shank nails that are color matched for the fascia. Once you get the color coated nails then you can nail where ever you have a good solid nailer behind the fascia.

If youre using aluminum fascia, I would use aluminum nails.

Electrolosys is slow between stainless and aluminum, but it will still occur and cause corrosion between the dissimilar metals.

Good point Aaron.
I always use steel fascias and stainless nails so they stay on longer than 4 years. Most aluminum fascias and nails fall out too easy.
I have had where a customer wants them nailed from underneath and I predrilled the holes for the nails. Most of the time I nail the face about two inches up from the soffit. A nail every 3 to 4 feet. Don't nail overlaps so the fascias can flex a little with the heat.

Too early...

Roof battens for iron roof
 

could someone tell me how far to set back timber battens off the ridge and hips of a trussed roof to isure proper fixing of ridge cappings. and/or any other advice. cheers