I have a carbon frame with an integrated seatpost. The saddle sits on a clamp that is meant to secure the saddle on the seatpost and NOT hold the weight of the rider too. I went on a ride and my knees started to bother me, so I went to adjust the height of the saddle and after reading the torque number for the binder clamp, realized I was shit out of luck and was going to either raise the saddle and risk damaging the carbon fiber or let it be and hurt my knees more. I of course chose to raise my saddle. So now I have some nasty gouges where the clamp rubbed the length of the seatpost.

I have spacers in place now to raise the saddle to the correct height but now I have some ugly scratches that are visible just below the binder clamp.

So, the question is, what should I use to keep the surface carbon from cracking more and to seal it up? I have been told to use either paint(not sure what kind) and to use a clear nail polish. Thoughts?

2 Answers 2


I have repaired non structural and surface carbon blemishes with clear nail polish. I had no issues and used the handle bars for several years with no issues.


I've been advised by my local supplier of carbon fibre to use a polyurethane paint to finish carbon fibre. You can buy it in spray cans from a paint or hardware shop.

Don't use paint stripper because that will damage the epoxy resin used to bind the carbon fibre.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

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