I am just stating what is on their can
"Application Methods – Shake or stir before using. Do not thin.
Apply with brush and/or roller or airless sprayer. Back brush or
roll to work product into cracks and edges of old paint. When
properly applied, PEEL STOP should dry to a slight sheen. Apply
a second coat if dull spots appear. For best brushing
performance use quality synthetic bristle brushes. Natural bristle
brushes are not recommended for use with this product.
In most
cases only one coat is necessary to prime most surfaces. If
excessive absorption occurs over very porous substrates a
second coat may be necessary. Spot priming is recommended
only under high-hiding topcoat paints. For best results prime
entire surface before painting. Keep container closed when not
in use."
Of course I rep Peel Bond. Peel Stop is not really a competitor since its use is a bit different. Peel Bond not only penetrates but it is a bridging high build primer. Anyone who tries to use it, be aware that application is a bit different. When you open the can you will notice that it is thicker than any other primer that you have seen. Painters who use a lot of it use a method called "glop and top". They glop a large amount on the surface with their brush and then "ice" it by pulling the brush across it at a shallow angle. Most experienced painters will want to brush it out like an ordinary primer which puts it on very thin. That's ok if you are just after the penetrating and sealing qualities but doesn't do much for the bridging, building and leveling qualities. Max recommended application thickness in 1 coat is 30mils wet although it doesn't start to sag on vertical surfaces until about 50 mils. E-mail me if you have any other application questions.