I was originally told that this trailer was painted with acrylic latex enamel and that the original artist sprayed the clouds with acrylic latex enamel in aerosol cans. Interior/Exterior house paint. The artwork and lettering had been done with fine artists acrylics. I was also told that the plan was to use polyurethane clear for the clear coat.
  After questioning Angie Leger, the owner of the trailer, president and founder of HHH, I sent her for paint from the store where she had originally been donated the basecoat. The basecoat paint turned out to be Pittsburg Paints Interior/Exterior Industrial Urethane Modified Enamel Gloss / Oil, An Alkyd manufactured by PPG. The paint store had the formula on file and remixed the color for us. I asked Angie to also pick up white and black paint that was compatible with the blue basecoat and to also request several of the colorants used for tinting the paint. The aerosoled clouds and horse on the left side of the trailer was sprayed with Color Place Flat Interior Exterior Acrylic Enamel purchased from Walmart. The acrylics were acrylics.
  The alkyd enamel has a drying time of 5 to 10 hours. High humidity, cloud cover and a cold front prevented faster drying while rain limited the time allowed before the trailer had to be finished. We had less than 2 days to make it presentable.
  To begin trying to repair the basecoat, we started by washing the trailer with soap and water using sponges to remove dirt and grime. The acrylic paint used for the lettering and the horse's rear end lifted when wet with soapy water and was easily rubbed off when wiped with the sponge. The water pressure from the hose was enough to peel the paint. We used scotch brite to remove all of the acrylic paint and to prep the surface for repainting. The enamel underneath the acrylics was stained a yellowish brown. Some of the lettering had been layed out on the enamel with black marker. The marker could not be removed without extensive sanding and priming which we did not have the time to do therefore the violet-black ink may bleed through in the future.
  After the trailer was dry, I began to repaint the blue background/basecoat with my Geo HVLP full size gun with no thinning of the enamel. The alkyd enamel bubbled to form fairy ring circle ridges. This was due to having sprayed a coat of basecoat about an hour before a small rainstorm came through. The alkyd enamel in white and black mixed with blue, violet, yellow ochre and brown toners given to us by the paint store was then used to paint the clouds, cloud lettering and horse angel. Clouds were painted with the white enamel using torn jagged cardboard strips from a huge box we had in the garage and freehanded with the Geo. The enamel was thinned with mineral spirits about 1:1 for airbrushing with the Iwata HP-BCS and HP-C Plus.
  I used my letter stencils (my cheat letters made from poster board) to get placement for the cloud lettering and freehanded in the letters using a very light lavender and white using a royal blue outline and shading. I taped and painted the horse's body then carefully removed the masking and paper to freehand airbrush in the mane, hooves, eyes, defining outlines of the horse angel, clouds and the halo while the enameled body was still wet to get the bare minimum repairs done by the time it needed to be picked up to transport Sweetie, one of Heavenly Horse Haven's horses to an event.

BEFORE

AFTER
Work In Progress
Removal And Repair Of Goofed Paint. Addition Of New Paint And Artwork
Time: One And One Half Days Into Project

AFTER Again
Work In Progress
Addition Of New Artwork
Time: Second Session One Day

AFTER Again
Work In Progress
Finishing Up
Time: Second Session One And One Half Days