New house, fair number of exposed nail heads, some were caulked with silicone, some were left exposed. I can see that there is no way to avoid a few exposed nail heads on the ridge (on the ends) but not why they would be randomly scattered across the roof. Also if it were me, I would never use silicone on a roof, or where it was exposed to weather, and plan to write it up that way. (silicone does not stick well to rough surfaces exposed to weather, such as asphalt shingles, a non curing sealant such as tar should be used…)
Any roof specialists can tell me I am over reacting? I don’t think its a big deal, but it is a new house.