Wood Priming Products, LLC is an authorized PPG/Olympic factory finisher. While not required to do so, we choose to apply only PPG/Olympic products since they are the market leader in factory finishing with over 40 years of experience in applying coatings to building materials. The paints we purchase from them are designed specifically for machine application and are matched to the particular materials we are painting. Each of the paints we use is the best available for the material we are protecting.
Why all primed spruce boards and primed exterior cornice materials are not created equal!!!
As pre-primed exterior cornice grows more popular an increasing number of suppliers will offer primed materials. It is most important to understand that appearances can be very deceiving and quality can vary dramatically. Some people will apply an inexpensive oil based paint with heavy solids content that looks good but accomplishes very little in terms of long term durability. The old adages "looks can be deceiving" and "you get what you pay for", generally apply.
Paint quality is most difficult to judge by sight, but will significantly impact the cost and long term performance and durability of the paint finish. We use no oils, only water based, latex paints which are proven to be far superior to oil based coatings when used on whitewoods such as spruce, pine and fir, the predominant materials used in the Atlanta market. The U.S. Department of Agriculture, Forest Service, and Forest Products Laboratory have published studies clearly stating that latex paints are the preferred coating. (see The Forest Products Labs Painting and Finishing Fact sheets - Paint, Stain, Varnish or Preservative? It’s Your Choice!)
As these studies indicate, latex coatings form a flexible protective film while oil based coatings form a hard, brittle protective film. Even after installation on a home, whitewoods continually expand and contract as they take on and lose moisture. The latex coating is flexible and therefore moves with this expansion or contraction. Because it is brittle, the finish of an oil based coating will eventually develop tiny cracks as a result of this movement, allowing moisture to penetrate the material surface and resulting in premature paint failure. The table below further highlights the advantages of 100% acrylic latex paints as compared to oil based coatings.
In judging the potential quality of any pre-primed material it is most important that you identify the specific paint used, its properties and its application. You should be able to ask for and receive a technical date sheet as well as confirmation of the application technique used, mil thickness applied and quality process used.
Olympic Machinecoat Exterior Finish
A waterbased 100% acrylic latex coating formulated specifically for machine application to both wood and manufactured siding. Machinecoat offers the application and performance benefits of premium latex paint combined with the beauty and protection of an oil-based coating.
Machinecoat is used for all spruce and pine boards, cornerboards, dimension lumber and mouldings.
Olympic Pitlock Tannin/Block Resistant Exterior Latex Wood Primer
A water based latex coating formulated specifically for machine application to prime and seal redwood, cedar and certain manufactured wood products. This coating is designed to prevent bleed through from tannins.
Pitlock is used for priming of all redwood and cedar products.
MachinePro Exterior Latex Primer
A non-blocking water based latex coating formulated for priming of non-bleeding woods, solid and fingerjoint mouldings, MDO substrates or wood composites.
MachinePro is used only on plywoods.
PPG has been a major U.S. supplier of architectural
coatings since 1900, marketing its products throughout North America
mainly under the Pittsburgh, Olympic,
Lucite and Rex brands.
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