Greetings from Southern California. Hopefully someone can help me with a weird tap-tapping/creaking metallic sound that occurs at night in one spot on my new flat roof. I’m guessing it’s some sort of weather-related contraction, although it’s not exactly cold-cold here. We’re expecting a low tonight of 48.
Details: New torch re-roof over back house flat roof of cantilevered, 2-story wood and stucco house built in 1965. Two existing layers down to the plywood deck were torn off. Plywood was said to be in good condition. Contractor installed a base sheet with metal cap nails, and then 12 sqs of Polyfresko G.
It definitely stopped my leaking problem, but now the noise keeps me awake at 4 a.m. I hear it above me in one room, but not in others or near the chimney, and not when I venture outside onto the patio. It’s a regular kind of tap-tapping, maybe 3 taps in a row, like dripping water, then silence, then resumption. I wouldn’t say it’s super-loud, but it’s notable when everything else is quiet. It seemed to taper off about sunrise and I’m pretty sure it doesn’t happen during the day. The house does creak a lot being perched on a hillside, but it’s usually one-off creaks along the walls. (I do get owls and so on, but this is different, too regular for wildlife.)
I emailed the contractors this morning; no response yet, but they are pretty busy and normally very good about emails. I’d just like to present them with some professional opinions in case they think I’m crazy. They already returned last week and checked to make sure the flashing was all secure. Many thanks in advance.