how to spray fibreglass bumperPrevious Back to: Paint and Refinish2 RepliesHome / Forums / Main Forum / Paint and Refinish / how to spray fibreglass bumperThis topic has 2 replies, 3 voices, and was last updated 12 years, 2 months ago by Ben Hart.AuthorPostsraymondOctober 3, 2012 at 3:22 pm #38462how to spray new custom fibreglass bumper? do i need plastic adhesion? or 2k primer? thanksSettings RyanOctober 3, 2012 at 4:38 pm #38463I usally sand the whole bumper with 180 make sure to fill all the pits and pin holes in the bumper and prime sand again and if needed reprime but it wouldn’t hurt to prime twice just to make sure everything is filled and coveredSettings Ben HartOctober 3, 2012 at 5:12 pm #38464If the bumper is coated in gel-coat, and you don’t burn through the gel-coat, you can do as mentioned.Settings AuthorPostsYou must be logged in to reply to this topic.Log In Username: Password: Keep me signed inLog In