It sounds like you have a source of water (RE: Pressure sprayer/water Tank?)...
please correct me if I'm wrong
This is how I do it, most of the time, on my PPF (same as a vinyl graphic)....You may want to try it, also.
Using the two (2) bucket system:
-You can wash vinyl graphics with your mixture of mild car wash shampoo/water....be sure to spot test on a small out-of-the-way section of vinyl first!
- Use soft cotton or MF wash mitt...no brushes (they'll leave scratches and dull the vinyl's finish).
-Always wash/dry vinyl graphics in one direction....no circular motions
- Top_down washing method as usual.
- If you find that some areas may have some difficult contaminates (tar spots, exhaust stains, etc.)...carefully spot clean with IPA/Water mixture, or Citrus-based cleaner (P21S/S100) and immediately clean with your shampoo solution. (these areas will definitely need some amping-up later.)
-After you’ve washed the vehicle, rinse with clean water. Then:
-Let the vehicles' vinyl air dry, or use a soft MF towel...again no circular motions.
Have all the above products. :xyxthumbs:
After the vehicle/graphics have dried, you may want to apply some product to amp-up the gloss/shine:
-Never apply any carnauba-based wax over vinyl graphics.
- Use a synthetic spray detailer that is clear---No Coloring---and gently wipe/buff with soft MF towel. Another product you can use is from XPel...it's their sealant for clear-bras/graphics...I sure wish I had known about this earlier, I'd send you some....Perhaps PM me?...I'm in Ohio.
{Note: It was recommended that I use TW ICE Synthetic Detailer (A
Very Clear Synthetic Product), for amping-up purposes, on all of the PPF on my vehicles...After almost 5 years the PPF looks great (except for some rubber marks and, idiotic actions from doofus-folks at car shows/cruise-ins)
This is one of my concerns the car had someone already damage the graphics. Only one of the cars has graphics.
You seem to have concerns about pressure washing:
IMHO:Use pressure washing only as a last resort!
Pressure washing can:
-Cause the edges to lift and start peel.
-Pressure washing can cause the vinyl to lose its sheen, cause cracks/chip away.
- Use EXTREME CARE if/when a pressure washer
must be used....Lowest pressure possible, at a 45 degree angle, staying away form the edges!!!
After what you wrote here, I think I will (if needed) use the pressure washer as a hose by not using the gun. I have used the pressure washer this way before and it works just like a hose (low pressure).
Hope this helps some.
GO BUCKS!!
Bob