How much do Styrofoam ceiling tiles weigh? Ruchi Gupta May 12, 2018 05:13 Updated Our Styrofoam ceiling tiles, that are not painted weigh only about 1 oz each. So yes, they are very light and will not put much stress on the ceiling. Our hand painted Styrofoam ceiling tiles are only about 3 oz each and also very light. Related articles Pre-Cut Crown Molding Corners Overview How do I install Styrofoam ceiling tiles around lights, vents and fans? When will my order ship? Comments 0 comments Please sign in to leave a comment.