Disclaimer: This article is for educational and informational purposes only. NiceTimber.com does not provide construction or engineering services. Timber waste rates vary by project type, skill level, and site conditions. Always plan conservatively and consult qualified professionals for structural projects. Timber Waste Calculator: Understand, Reduce, and Control Wood Waste in Construction Timber waste is one of the most underestimated cost drivers in construction and DIY projects. Many builders focus on timber prices per meter or board, yet overlook how much wood is lost through cutting errors, offcuts, warping, defects, and poor planning. Whether you are framing a house, building decking, crafting furniture, or working on a small DIY project, timber waste directly impacts cost, sustainability, storage, and workflow efficiency. In some projects, waste can exceed 20–30% of purchased material — of...