Specific primers are almost self explanatory,ask at a paint store that sells paint as it’s only business. A primer has different ingredients in it that makes it not only adhere to the surface your painting, but the primer is made to have a surface that your finish coat can grip onto. A finish paint is formulated to weather or have certain properties that are different than a dedicated primer. To do a job that will have a chance to last, you need to do it right. As the exterior paint finish gives itself up protecting the walls/window, you will eventually see some green smears on the white walls, the green paint is easy to see over white as the window paint, form exposure to the sun etc, wears down and rain washes the old paint away. Higher sheen paints, as they give up their “lives” for what you painted, will “efflorescence”, which can be unsightly,depending.Say you have an exterior wall w/windows, you paint the wall white in gloss(latex or oil) and you paint the window casing/frame green. But, the higher the sheen the more imperfections you will see in the surface you are painting when light shines off it.To fix/patch something, requires priming and the 3 coats to make it look good again and match the rest. It “washes/wears” better, it lasts longer. The higher the sheen, the better protection you get. Never to be used as a top coat,always painted over with at least one coat of finish paint to protect the primer coat from erosion/wear.Ī finish/top coat is not formulated to be a primer, it is formulated to wear down and save what you are painting. Short answer: NoĪ primer is formulated to bind to the surface of what you are priming/painting, and to be “soft enough” to let the finish paint have the best chance to bind to that primer coat. Best is Light Yellow whenever possible, and not to heavy on the amount, most color will cover the sanded …. I put amount to work with in my “Mud Pan” mix it to consistency, add just enough colorant to be able to see my touch up patches over primer/1st/2nd coats. I use Durabond (powder you hand mix with water) or RaedyMix ( Pre mixed joint compound in 5 Gal. ** I use Universal tint in Exterior Light Yellow,Exterior Medium Yellow or Raw Sienna. * You can use Universal tint in oil varnishes, be careful of the outcome
*When you use 1/2 tint primer, you can now patch any thing you see withĭurabond/ready mix, it will dry white, you can see it to sand/prime the patch now. * when you use primer, you can see if they make a primer in the sheen you want, there is a small amount of colored/specialty primers out there. And at least 3 if finish coat has a sheen/gloss to it. Write down the formula and how you measured to colorants and don’t lose it! A flat finish could use 3 coats depending on color. You need a number of colors and in the large size, it adds up.If you do, you need to make sure you have enough for all the coats you need to make your substrate look good. So unless you plan to do a lot of testing and measuring for a big project, it is not worth it to custom tint your own color. They are not cheap if you buy big bottles of it. * You can buy “Universal tint” to tint your own, read on it, BUT those tintsĪre permanent!! They get on anything by itself, it does NOT dry. * Now you have added a depth of color to finish as opposed to a primer that you have to cover instead of one helping you. If you use light and look at wall on an angle as you go along/finish. * At 1/2 value, you can see “holidays” or missed/un-primed or areas on substrate because it is darker/lighter than what you are painting, but not as dark as your finish coat, you can see what you are doing. Industry standard is to tint primers (when asked to tint them) is to 1/2 value of finish coat. This applies more to finish coats, but is good to do otherwise. When using paints from more than one container, you should mix both containers into a a larger container, straining as you do it. Plywood sheets used indoors for a construction barrier. Was latex (?) from one of the drywall companies,National Gypson, Gold Bond, I think, sold in five gallon buckets. Only primer I saw goes on pink dries white is a fire retardant primer.