What type of research and testing was conducted to determine the effectiveness of barrier membranes with pressure-treated wood?
Barrier membrane corrosion testing was conducted by Grace Construction Products in conformance with ASTM G59 “Standard Test Method for Conducting Potentiodynmanic Polarization Resistance Measurements.” Simpson also conducted barrier membrane corrosion testing in general conformance with the American Wood Preservers’ Association Standard E-12-94 “Standard Method of Determining Corrosion of Metal in Contact with Treated Wood” to substantiate Grace Construction’s testing. All test samples used steel coupons with a Hot-Dip Galvanized coating conforming to ASTM A653 class G90 (0.90 oz/ft^2 of zinc total both sides.) The tested pressure-treated woods included Chromated Copper Arsenate Type C (CCA-C), Alkaline Copper Quat Type D Carbonate (ACQ-D Carb) and Copper Azole Type B (CA-B). The ACQ-D and CA-B treatments used an ammonia carrier.
Related Questions
- What type of research and testing was conducted to determine the effectiveness of barrier membranes with pressure-treated wood?
- Is the use of barrier membranes a major change to Simpson’s original product recommendations with pressure-treated wood?
- How should barrier membranes be used with pressure-treated wood?
