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TimberForm uses Playground Equipment Grade coastal Douglas fir which is free-of-heart-center. Douglas fir is a tough and durable structural species ideally suited to the demands of playground use when a premium grade is used. It will vary in color from shades of salmon to ivory and eventually turn to a natural sable gray in outdoor settings. F.O.H.C. specification is critically important. Timber containing the tree's heart or pith will perform poorly in time and have a short useful life. After seasoning, smooth dressing and fabrication, all wood components are inspected for appearance and suitability for play. All TimberForm timber posts undergo MaxTreat processing prior to pressure-preservative treatment. MaxTreat is an exclusive fabrication procedure that includes two steps, incising and kerfing. When combined, these two steps greatly enhance pressure-preservative treatment and retention in the sensitive groundline area of embedded posts.
Francisco Uviña, University of New Mexico
Hardscape Oasis in Litchfield Park
Ash Nochian, Ph.D. Landscape Architect
November 12th, 2025
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