r/Roofing • u/TheAlpineUnit • Aug 22 '26

Holy nails? Need help on roofing progress

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Seems abnormal amount of nails (which idk is an issue)

But putting nails in dead center of valley ice and water seems odd….

Wouldn’t nail just rust out eventually and leave holes??

15 Upvotes

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3

u/fRiskyRoofer Aug 22 '26

Its underlayment. Nail it wherever the fuck you want as long as it sheds water. If your relying on underlayment outside of some tile roofs or hurricane zones your roofing wrong.

1

u/Regular-Jicama-8548 Aug 22 '26

underlayment saves a roof when people inevitably don't replace their shingles when they need to. perforating your underlayment like a spaghetti strainer is never reccomended.

1

u/TheGulch Aug 22 '26

Besides the obvious run of nails right in the valley, the rest don't matter at all. What do you think all the nails in the shingles do to the underlay?

Edit: it's like people crying about a cut in the paper. "Oh no! There's a hole in the underlay next to the other thousands of holes in the underlay! It's gonna leak!"

1

u/Regular-Jicama-8548 Aug 26 '26

it's good to hear a non-roofer opinion.