How are Aluminum Seamless gutters attached?

How are new Aluminum Seamless gutters attached?
Does the nail go vertically through the top piece of the gutter that sits under the paper and shingles? Or does the nail go horizontally through the inside gutter into the rafter. Or can they attach either way?
I am getting a reroof, old roof torn off and new roof put on, a ranch style home 4/12 pitch comp shingles. The old gutters that are still up have the nails going horizontally through the inside of the gutter into the rafters.
The reason I ask, I would like to paint the eaves before they attach the gutters. So was thinking they tear off the roof and gutters put on the new roof and then I paint and then they come back out and install the gutters.
The other option is I remove the gutters myself and paint the eaves and the areas where the downspouts go before they start the roof. Let them install the new roof and gutters and then I finish painting the rest of the home.
I am getting the gutters that are already painted and I don't want to get paint on the new gutters and downspouts.
Thanks
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Tube Audio wrote:

<snip>
The old method was to attach gutters with a large spike that went horizontally through the front and back edges and into the ends of the rafter tails. The spike gets loose after a few years, and the gutters start to sag.
The new method is a metal strap that runs up under the shingles a few inches and is nailed into the decking. This lasts longer.
Whether you paint before or after the roofers doesn't really matter. If the roofers are good, they won't mess up the paint, though you might have to do some touchup where ladders were used.
Do whatever is most convenient for you. The roofers and gutterers won't care.
The roofers will probably remove and dispose of the old gutters as part of the tear-off if you request it.
--
Steve Bell
New Life Home Improvement
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http://64.78.38.231/kaycan2/home2.cfm?hdimg=z&root &subhd=&page_id1&subroot6&subsubhd=Aluminum%20-%20KStyle&lang=1
scroll down to items J & K..those are commonly known as "hangers" and are nailed or screwed on with the nail going thru a predrilled hole in the end next to the back of the gutter into the facia board. The front end of the hanger clips into the front edge of the gutter prior to nailing.
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If the roofer is also doing the gutters, I would probably take down the gutters myself in order to do the painting before the roofer even starts.
The roofer will not want to make a second trip, especially not knowing how soon you would be finished with the painting.

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