First understand that silverfish will live on roof tops under shingles around gutters and under exterior siding.
Silverfish on roof.
Silverfish can also enter your residence by way of cracks and unseen holes in your roof.
Silverfish can be found almost anywhere in a house including living rooms bedrooms bathrooms attics basements garages and shake roofs.
From there they ll migrate into homes when it gets cold.
They look for starch and sugar and some of their favorites are books and newspapers.
Silverfish are a relatively easy insect to control if you spot the signs of them.
This is why they become noticeable in the winter.
They also love fungal molds like those that are common on cedar roofs as well as cellulose which is often found in shampoo shaving cream and other similar products.
They can be especially attracted by mold and wood rot that result from a leaky and damp roof.