Should you let PVC primer (purple) dry before applying cement or is it okay to apply cement over wet primer?
Plumbing – Should you let PVC primer (purple) dry before applying cement
plumbingpvc
plumbingpvc
Should you let PVC primer (purple) dry before applying cement or is it okay to apply cement over wet primer?
Best Answer
No - PVC Primer does not need to 'dry' before use - in fact, it needs to be wet to do it's job and not impede the cement - remember, plumbers in a hurry use this daily and aren't sitting around waiting for the primer to dry before grabbing the cement.
I make sure everything fits first, then grab the primer and swab it on, set it down and grab the cement and swab it on. If you wait - it's likely no more the 10 seconds. If you've waited a few minutes because you've gotten distracted, made a mistake or something and it's fully dry, just reprime to be sure the plastic is accessible and softened for the cement. If you don't- it can prevent the cement from bonding as well to the plastic.
The cure-times listed on the can are for after the cement cures- typically 2 sets of times will be listed - one for handling and one for pressure testing.