Okay I'll just say it. 4 coats of Peel Stop is not the answer, ever. It is not a leveling or fill product. The manufacturer recommends one coat on most surfaces and two coats on absorbent/porous surfaces as needed.
If you have uneven surfaces, use the proper filler, period.
You also recommended to tint it. The manufactures instructions state:
Tinting – Do not tint this product
Sorry, but bad advice all around. I have used the product many times and one coat has always done it's job. Occasionally I have had to spot a second coat in problem areas, but never second coated an entire project.
Best method is to:
1) Scrape
2) Sand
3) Wash/Wipe Down
4) Fill uneven areas
5) Sand
6) Wash/Wipe Down
7) Apply one coat of Peel stop
8) Sand if necessary
9) Wash/Wipe Down
10) Prime
11) Paint
Smooth Surface every time.
Hmmmmm???
My can says a few things:
1- TINTING: Can be tinted with up to 1 oz. of universal colorant per gallon to improve topcoat hide.
2- PEEL STOP TRIPLE THICK is 3x thicker than regular primers so it
fills and seals cracked, weathered, and peeling areas,
creating a smoother, more uniform surface for finishing.
3-APPLICATION:.....
or follow with several THICK coats to bridge and fill cracked and uneven surfaces.
4-BRUSHING (or spraying, basically same): Apply
HEAVILY and work into peeling and cracked areas. Apply
additional thick coats as necessary.
Weren't you the guy who stated in a different thread that only an idiot would spray Peel Stop? They have a section on that too. Doesn't mention idiots, mentions spraying recommendations though.
Beyond those tiny tidbits of my terrible advice (personal observations), it was just the worst side of the house that received that "hack" treatment.
My question to you is........why bother with Peel Stop after you have completed an entire surface restoration of the house? Billable hours? Well played sir.........well played! You shame me with your masterful craftsmanshipiosity!