PDB Debrief: Commercial Primers
January 2023
Why primer?
Ensures adhesion of paint to surface
Prep & seal unpainted surfaces
Increased paint durability
Block stains & smells
Additional protection for material being painted
Better aesthetic result
Match primer type with paint type (i.e. oil primer for oil based paint), as well as make sure the primer type is appropriate for the surface its being applied to. Often, you cannot paint over an oil based paint with latex without prepping the surface to remove it or prime it properly.
As always— REVIEW SUBMITTALS AND REVIEW THE SPEC FOR EACH PRODUCT.
Oil Based
"High-touch” surfaces
Porous surfaces
Areas with visible staining
Outdoor spaces
Heavy duty
Higher VOC
Water Based
Often referred to as “latex”
Water cleanable
Lower VOC *Faster drying
Indoor
Paint & Primer “All in One”
Fewer overall coats
Good for new drywall or clean surfaces

Further Reading:
https://www.ppdpainting.com/blog/role-of-prime-coat-in-painting/
https://www.performance-painting.com/blog/why-your-commercial-building-needs-primer