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New Pressure-Treated Lumber
There are improvements in wood-preserving technology. They are in response to a growing market demand for less toxic, more environmentally acceptable preservatives for wood.

These new treatments include ACQ and Micronized Copper. ACQ stands for Alkaline Copper Quat. The central ingredient is 100% recycled copper. Alkaline is a natural base, and quat is a fungicide that attacks decay organisms. Micronized Copper treatments utilize copper but in micro-sized particles.

Phillips Fastener is pleased to announce all of the Phillips II Plus Wood Screws and Phillips II Plus Composite Screws are formulated to work with all types of pressure-treated lumber. All three colors – red, tan, and green – can be used.

Tested to Building Code Standards
Phillips II Plus Wood Screws and Phillips II Plus Composite Screws have passed AC257 testing by an ICC-accredited laboratory. Tested to exposure condition 4 (the most severe category of this test).

Lifetime Guarantee
Phillips II Plus Wood Screws and Composite Screws are formulated to prevent rust for the life of your project. The coatings will not prevent staining or streaking related to weather and surface punctures on exterior woods that have not been properly treated and sealed.
Choosing the Proper Screw Length

For attaching 5/4 boards, use 2-1/2" length

Quantity of Screws Required

2-1/2"
Deck Size   Qty of Screws
8' x 8' = 3 lbs.
8' x 12' = 5 lbs.
12' x 12' = 6 lbs.
12' x 16' = 8 lbs.

Installation Instructions


Edge Test Samples: Before beginning your construction, perform some tests on scrap composite. Depending upon the composite used, the installation temperature, and the age of the board, composite screws will perform differently. On test samples, install screws close to the end of the board to check for cracking. Cracking may occur in cold weather, in very dense boards, or in boards that have aged substantially. If you are unable to make your screw connections far enough in from the end of the board to avoid cracking, it may be necessary to pre-drill the board end holes.

Technique: Before beginning your project, develop a proper technique of installation. Phillips' composite thread configuration will pull the displaced melted composite into the screw hole as you drive it in. Try various driving speeds and note the results. Also develop a proper depth to which you will sink the head. In most popular composites, pre-drilling is not necessary; however, if some mushrooming still occurs, pre-drilling with a 1/8" bit will guarantee a flush surrounding surface. Each composite wood reacts differently, so a little practice will make the outcome better.