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Cellular PVC Trim Basics
Jun 29, 2018

Many material types have emerged over the past decade or so as a replacement for traditional exterior wood trim. Each has its own advantages and disadvantages, most staking claim to being durable, low maintenance, and attractive in appearance. One in particular has garnered my attention: cellular PVC trim. Manufacturers offer product warranties that range from 25 years to lifetime limited warranties, which surpass most other exterior trim product warranties.  The material is extremely durable; resistant to warp, moisture, and insects; and can be cut, drilled, milled, and routed using the same tools you would use with wood.  Cellular PVC is a white material that is available as trim or cornerboard, profiled mouldings, and sheet goods. Trim boards, depending on the manufacturer, have nominal board lengths of 8, 10, 12, 16, 18, and 20'; standard nominal widths of 3, 4, 5, 6, 8, 10, and 12"; and nominal thicknesses of 5/8, 1, and 5/4".  Trim products can also have a smooth surface or can resemble wood with a textured wood grain surface.