For more information on exterior finishes view the Redwood Exterior Finishes in Adobe Acrobat (PDF) format.
What is back-priming and why is it important that I back-prime my siding?
Most manufacturers of solid wood siding and exterior wood finishes recommend back-priming. Back-priming refers to applying a finish to the back of the siding before installation. All edges and ends should be treated as well. Back-priming provides additional insurance against extractive bleeding and dimensional instability or cupping.
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