One of the Important Points to Note When Using Non-Toxic Paint
Whichever paint you choose, make sure it's non-toxic! If you decide not to paint the roof instead of using shingles, you can treat it with flaxseed oil, as it's a non-toxic preservative.
One of the biggest reasons you want to paint non-toxic is because, as you are well aware, dogs chew on pretty much anything, and you can start chewing on parts of their homes. Therefore, you should also make sure to let things dry out before allowing your fluffy friends to visit in a new place. You can also put the nametag on the outside, so everyone knows - it's Fido's home.
