When hanging an L bracket, I ran a test drill to see if there was a stud. I hit what I thought was the stud but it turns out to be a plastic stud. How do I anchor through the sheetrock? My screw will not pierce the plastic stud.

  • 5
    I have never used plastic studs. Are you sure it is a plastic stud. If there is wiring in the wall less than 1-1/4" from the surface of the stud metal plates are required to protect the wiring. I would be concerned that you are drilling into a conduit or water pipe. – Ed Beal Oct 9 '16 at 19:32
  • 1
    What color plastic? Black suggests abs plumbing pipe; some electrical stuff is gray. I too have never experienced plastic studs, but I don't know where in the world you are, either. – Aloysius Defenestrate Oct 9 '16 at 22:41

How old is the building you are working in? Only a very new one might have (ecostud.com/product_details.html ) plastic framing studs. More likley you have drilled into a plastic pipe. If your water is on and you haven't noticed a leak you have drilled into a drain line or a plumbing vent stack. If it was my house I would cut a small opening in sheet rock at that very same location to verify what you have drilled into and if it is in fact a pipe open the wall enough to repair the hole in the pipe.

Please let us know what you find. And if it is a stud made of plastic explain why a screw would not pierce it. Studs are after all supposed to be accepting of dry wall screws regardless of what they are made of.


Thank you all. As it turns out, it was a metal stud which explains the flex I felt when trying to secure the screw. I had cleaned out the screw hole with compressed air prior to posting my question but there was still sheetrock dust that made the stud appear white. I knew it wasn't an electrical or water line so I checked to see if there was such a thing as a plastic stud - and there is. Used for nonload bearing interior walls or possibly for rocking a concrete block basement. Thanks for your help.

  • Metal studs come in different gauges heavy gauge studs can be resistant to standard screws. The self drilling screws work good on them. But for just mounting a L bracket or two I would drill a pilot hole and then attach with normal screw. – Kris Oct 10 '16 at 13:39

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.