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.

Paints 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.

About PPG:

A leading global manufacturer, PPG Industries supplies product for manufacturing, construction, automotive, chemical processing and numerous other world industries. Established in 1883, the diversified Pittsburgh-based company makes protective and decorative coatings, flat glass, fabricated glass products, continuous-strand fiber glass products, and industrial and specialty chemicals.   Sales in 1998 exceeded $8 billion.

PPG operates 75 major manufacturing facilities in Australia, Canada, China, France, Germany, Ireland, Italy, Mexico, the Netherlands, Portugal, Spain, Taiwan, the United Kingdom and the United States. To benefit its customers through leadership in technology, the Company conducts research and development at 10 facilities worldwide

About PPG Architectural Finishes, Inc.

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.

Our marketing strategy revolves around distinct distribution channels. These consist of home centers and other mass merchandisers for Lucite paints and private labels, independent dealer channels for Pittsburgh Paints, and multiple channels for Olympic stains.

During 1997/1998, leading our advances in architectural coatings were Olympic paints, which were introduced and are being sold exclusively by Lowe's Home Improvement Warehouse. This initiative takes advantage of strong consumer acceptance of the well-respected Olympic name, and we have worked with Lowe's to position the paints as a premium decorator line.

For the popular
Pittsburgh paints line, we introduced a totally new array of decorator colors. They are aimed to serve professional painters and decorators.

Late in 1997, we acquired Keeler & Long, with a plant in
Watertown, Conn. The operation produces high-performance maintenance coatings for transmission towers and other electrical-utility equipment, as well as coil coatings for building siding. In 1998, we acquired Porter Paints.  With production facilities in Louisville, Kentucky, Porter sells their products through 125 company owned stores and several hundred independent dealers. Porter markets a broad line of interior and exterior paints and stains.




Most are now Alkyd oil (modified oils)

Are manufactured using 100% acrylic resins.

Provides a hard, impermeable barrier. Won’t allow moisture to pass through, thereby making these coatings more prone to blistering and peeling.

Provides a permeable film, allowing moisture diffusion to avoid blistering of the paint film.

Provides good adhesion over most surfaces; very good adhesion on chalky surfaces.

Provides superior adhesion on all surfaces.

Oil finishes are more brittle, often resulting in cracking and peeling of the paint film over time.

Provides good flexibility over most substrates, resulting in greatly decreased incidence of cracking and peeling.

Oil finishes don’t hold their color well, tending to fade more quickly.

Acrylic paints offer superior color retention.

Oil paints "chalk" more quickly as the binder is slowly degraded by sunlight and/or moisture.

High Quality exterior acrylic paints are formulated to resist chalking so well that it may not occur at all for several years.

Oil based paints are more prone to mildew growth as mildew can feed on the binder found in alkyd oil paints.

Acrylic paints are mildew resistant. The paint contains a mildewcide and the binders used in latex paints are not nutrients for mildew.

Oil based paints are generally higher in VOC (volatile organic compounds) content than similar acrylic coatings, and require solvent based materials for cleanup.

Acrylic paints are more environmentally friendly, containing fewer VOC’s and featuring soap and water cleanup






[Home] [Products] [Services] [Process] [Location] [Contact Us]
Wood Priming Products, LLC
(770) 965-4151                                          (770) 965-4153 fax

Website by: Lanier Consultants, Inc.