Originally Posted by Ftoast
Does primer hold noticeably better onto thrifty whiteboard compared to the SF mix?
Only a Primer such as "Gripper" Primer
, a primer specifically intended for use on such smooth surfaces would have a superior adhesion to a Paint such as Silver Fire
when either are Dusted on.
Dusting, by the virtue of it being a method by which paint is applied in small amounts that are in fact tiny individual droplets of paint that have the ability to dry and cure quickly, allows for more individualized adhesion.
The myriad of tiny, dried bumps in turn act as footholds for subsequent other layers.
Beyond that, the properties of the paint itself come into play. Glidden's Gripper Primer
has additives that add to it's adhesion ability. Silver Fire
have high quality Acrylic Latex combined with Polyurethane.
The dilution of those Mixes, effected by adding Water, allows for even more rapid evaporation of the liquid aspect of the paint mixes, causing more rapid drying and shrinkage when such is applied very sparsely (via Dusting) Such action is what constitutes the level of adesion any such coating obtains.
Of course applying "Gripper"
via Dusting will make it all the more effective. I myself have forgone the use of "Gripper"
on smoother surfaces such as TWH
, and Enamel Coated Aluminum Sheets
, because I have observed the ability of the paints I use to adhere well to such surfaces when applied via Dusting.
However, those who have less confidence in my own observance, and who want / or need a higher degree of durability can be well served by applying 3 light coats of "Gripper"
to a surface such as TWH
or other slick Hard boards.....especially if the surface needs a bit of enhancement or repair of blemishes.
In the end, one could use any good Primer via Dusting and accomplish much...if not all the same purpose. But if one is to literally "buy into" the performance claims of a Primer such as "Glidden's Gripper"
(...it all seems to revolve around that name, eh? ) then obviously it would be the Primer of choice to use.