Apr 20, 2007

Setup doors to spray

spraying MDF doors

If you are considering spraying doors with either an HVLP or airless sprayer, here is simple setup, probably one of the more common methods used. There are a number of door stacking systems available.

TIPS before standing or ‘staging’ doors

  1. Shop-vac floors and put heavy construction paper down, not plastic. Alternatively doors can be sprayed on concrete or subflooring if the builder permits
  2. Group doors together to prime edges with a short nap roller the day before you plan on spraying the doors. Sand and prepare for paint
  3. Use a 1” nail (4d sinkers) and door shims to tack doors together
  4. Nail approximately 3-4” in from the edge for better stability
  5. Let everybody around you know to stay back while spraying. Post a sign. I almost sprayed a homeowner who slipped in the house without my knowing
  6. Allow overnight to dry before removing from paper. The doors should remove cleanly as long as you don’t puddle paint between the bottom edge of the door and the paper
  7. A 4' whip hose comes in handy for better flexibility

spraying MDF doors

In new construction, many of the doors are MDF and require all six surfaces be painted or warranty is VOID. The MDF doors tend to warp much easier than solid wood doors. It’s a PITA but save yourself the headache of callbacks and prime the tops and bottoms.

sanding MDF doors

About the Photo
Two things worth mentioning, the coarse edges on the doors from the factory will not get smooth with multiple coats of paint. It's best to treat the edges with an oil-primer covering any bare MDF and sand it good. Simply applying acrylic to edges will only raise the MDF fibers and make them sharp enough for someone to cut their hands or fingers. Not all MDF doors are this bad.

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