I live in Calgary, AB. The dryer exhaust vent on the house I just bought came off. It was just screwed into the vinyl siding. I want to fix it by installing a dryer vent mounting block combination underneath the siding. Something like this https://www.lowes.ca/ventilation-accessories/788-in-x-713-in-white-dryer-exhaust-mounting-block_g1572759.html
What is the proper way to install a dryer vent mounting block with vinyl siding? Do I need to install flashing above the mounting block and tape the flange? Or would a bead of caulking underneath the flange be sufficient?