Does home button replacement need new adhesive?

I'm getting ready to replace a broken iPhone 6 screen. The complete screen is due today and I will be removing my original home button, installing it in the new screen. The instructions talk about being careful when removing the home button to make sure it doesn't tear and because it has some adhesive. When I install it in the new screen, will I need to add more adhesive (what kind?) or will there be enough adhesive on the seal to allow it to be locked into the screen frame? Thanks.