Silverfish are a relatively easy insect to control if you spot the signs of them.
Silverfish on roof.
This is why they become noticeable in the winter.
From there they ll migrate into homes when it gets cold.
In fact shake roofs are excellent breeding sites for silverfish during the warmer months as they have an abundance of moisture cellulose starch and dead insects.
Silverfish can also enter your residence by way of cracks and unseen holes in your roof.
They can be especially attracted by mold and wood rot that result from a leaky and damp roof.
They look for starch and sugar and some of their favorites are books and newspapers.
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.
First understand that silverfish will live on roof tops under shingles around gutters and under exterior siding.