A pva primer is fine for most fresh drywall applications. You will see names with pva primers (pva is usually cheaper) they will work on fresh drywall perfectly.
Kilz can be used as a drywall primer, but an unnecessary expense unless some sort of stain in new drywall. Plain flat white latex primer generally the best and lowest cost choice.
Drywall primer has less pigment and more resins, it's referred to in teh industry as more of a pigmented sealer than a primer. Maybe the products your competition uses is cheap crap? I could get better results than that with one coat of tinted pva and one topcoat of Regal or Accolade.
I would also recommend back rolling after spraying the primer. When you spray drywall, the dust and hairs raise up in the paint. Spraying primer over dusty drywall without back rolling doesn't create good adhesion either. That new drywall might look okay, but there is a lot more dust on it than what meets the eye.
Here are some examples of how a primer should be used on different surfaces, depending on condition: One Coat—New drywall, raw wood, subtle color changes. Two Coats—Damaged drywall, stained walls, rusty metal. Three Coats or More—Wood paneling, bold color changes.
Back-rolling is typically most impactful when applying the primer for the interior walls of a home or a new construction build. While the primer is the coat that bonds with the substrate initially, airless spraying itself does not penetrate or enhance adhesion.
The new surface will be porous and will absorb the color of the paint.
Original Kilz Primer allowed more seep through when put in two coats to two different walls in the same area, whereas Zinsser provided superior coverage.
BEHR PRO High Build Interior Primer is recommended for new and previously coated drywall and plasterboard walls and ceilings. It is a primer that combines skim coating and priming steps into one spray application over properly prepared new drywall.
In general, one gallon of paint or primer will cover roughly 250-350 square feet of surface.
Depending on how strong or bold the previous color is, it may be necessary to apply more than one coat of primer. However, it is not necessary to over apply the primer with so many coats. As long as the primer applies uniformly over the previous color, then one or two coats should be sufficient.
For excellent performance under flat and eggshell paints, choose BEHR® Drywall Plus Primer & Sealer. This 100% acrylic formula is more versatile than PVA primers, making it ideal for wood, woodboard, drywall and other porous surfaces in all your home's low-moisture rooms.
Trusted by pros for over 40 years, excellent sealing and adhesion properties help paint adhere to most interior surfaces leading to better results. Use on wood, drywall, plaster, paneling, wallpaper, masonry, brick, painted metal and properly prepared glossy surfaces†.
If you have various stains, shellac Bonding primer is the ideal choice. It can be used to cover rough surfaces and old varnish as well as metal and ceramic.
Test the primer after it dries. If it still looks patchy, add another coat. Sand lightly between coats for an extra smooth finish. This step helps the paint look its best.
Our paint pros recommend INSL-X Aqua Lock Plus Primer as the best drywall primer. This multi-purpose, acrylic, water-based primer/sealer features outstanding sealing properties perfect for priming new drywall. It adheres to interior and exterior surfaces and can be top-coated with latex or oil-based coatings.
Zinsser BIN is shellac-based, whereas 123 is water-based. This makes Zinsser Bullseye 123 a lot quicker and easier to apply. It's also better suited for use on bare wood, or to prime plastic and composite before painting. BIN may be harder to apply, but it is by far the better stain block.
KILZ MOLD & MILDEW Primer will block most medium to heavy stains including felt marker, grease, ink, pencil, tannin and water stains. It is a fast drying, low odor, very low VOC formula and is easy to clean with soap and water. Not recommended for floors.
PVA primer: PVA (polyvinyl acrylic) primer is a water-based primer that is specifically designed for use on new drywall.
One key difference between the two is that sheetrock is a brand name of drywall made by the United States Gypsum Corporation. Another difference lies in their production process; sheetrock has a slightly denser core than drywall due to the addition of a small amount of wood fiber to the gypsum core.
Applying primer first is the best way to ensure a perfect finish later. Just as it does with makeup and on cars, primer creates a smooth base that promotes better adhesion and truer color from your topcoat paint. Pro-tip: Apply primer using a brush first to “cut in" around edges, then use a roller to fill in.
This spanning or bridging will soon crack and separate as temperatures rise or fall causing the paint to expose those troubled areas again. This will be a paint failure in the future. In order to get proper adhesion and penetration you need to force the paint into the voids or troubled areas described.
HOW LONG DOES IT TAKE FOR PRIMER TO DRY? Most latex primers dry to the touch in 30 minutes to one hour. But for best results, don't paint until the primer completely dries—which can take up to 3 hours, depending on temperature and humidity.