PVC Cemented Pipe and Fittings

• Once a PVC pipe has been cemented to its fitting, the solvent contained in the cement, usually methyl ethyl ketone, begins breaking down the top layer of both pieces. As the solvent dries, it leaves behind only the PVC resin contained in the cement, and effectively fuses the two pieces of PVC together. As such, no amount of heat or chemical exposure will cleanly separate the two pieces.
  
  

Excess Wet PVC Cement

• If excess cement oozes from the joints at the time of fitting, you can wipe it away using a damp cloth. Take care not to spread the cement around on the PVC pipe or its fitting, as the solvent contained in the cement can weaken any PVC that is exposed to it.
  
  

Excess Dried PVC Cement

• Some PVC cement is colored purple or blue to allow for better visibility during application. This can lead to unsightly bubbles and droplets on pipes after the cement has dried, however. Cleaning this excess cement involves delicately sanding the area using high-grit sandpaper. Take care not to sand beyond the cement and damage the underlying PVC. Always wear a mask and eye protection as inhaling the dust from either the cement or the PVC itself can be hazardous to your health.
  
  

PVC Cement Spills and Drips

• Fitting a large amount of PVC pipe can be a messy job. If you install enough fittings and joints, some spilling and dripping is bound to occur. You can remove dried PVC cement from hard surfaces using a razor blade or putty knife to gently scrape the cement off of the material. If you spill the cement on other surfaces, try to wipe it off before it dries.