Primer
The coat between putty and paint that seals the porous, alkaline wall surface and gives the topcoats something to grip. Skip it and even premium paint bonds poorly and fails early - one of the layers in the paint system.
The coat between putty and paint that seals the porous, alkaline wall surface and gives the topcoats something to grip. Skip it and even premium paint bonds poorly and fails early - one of the layers in the paint system.