Poly lumber is high density polyethylene raw material derived from post-consumer waste such as milk containers. The material is cleaned in a decontamination process to a purity level over 99% HDPE. Once decontaminated it is then compounded into rigid board stock material with a resulting finished product containing over 90% recycled post-consumer waste by weight.

Poly lumber comes with a 20 year limited warranty. The product is warranted not to split, crack or splinter during this period.