What Kind Of Fasteners For Pressure Treated Wood
The copper in pressure treated wood acts as one type of metal and the hardware you use to build your project is the other.
What kind of fasteners for pressure treated wood. Further the extra coating on these screws are a great bulwark against rusting. In addition most codes permit the use of silicon bronze or copper fasteners in these situations. The accelerated corrosion that follows could be common rust which often occurs with steel fasteners or it could be pitting which more often occurs with aluminum and certain kinds of stainless steel. The coating weights for zinc coated fasteners shall be in accordance with astm a153.
Multiple coated screws offer many benefits for getting around this problem. These dull gray fasteners must meet the astm a153 standard for zinc coating quality and the g 185 standard for coating amount. Galvanized steel screws nails and bolts used with copper treated wood must be hot dipped in molten zinc at 850 degrees fahrenheit. For example your dealer may stock proprietary anti corrrosion technologies matched for alkaline copper quat acq or copper azole ca b.
This means the coatings will provide corrosion resistance for outdoor building projects using lumber like cedar or redwood. Many manufacturers have developed proprietary fastener coatings that they claim offer sufficient protection against corrosion when used with pressure treated lumber. The g 185 coating is equivalent to 1 85 ounces of zinc per square foot of steel.