What is construction and demolition waste?

Construction and demolition waste consists of the materials, debris, and byproducts that result from building new structures, renovating existing ones, or tearing down properties. This waste stream includes concrete, asphalt, timber framing, dimensional lumber, drywall, brick and masonry, roofing materials, windows, doors, plumbing fixtures, electrical components, metals (ferrous and non-ferrous), and mixed rubble.

Sorting C&D waste by material type is essential because different materials have different disposal routes and recovery potential. Concrete and asphalt can be crushed and reused as base material or aggregate. Wood is either reusable for salvage or sent to processing facilities. Metals are removed and recycled through scrap dealers. Gypsum drywall requires separate handling to meet landfill regulations. Contaminated materials such as asbestos-containing products, lead paint, or treated wood must be identified and handled according to provincial and federal guidelines.

Ontario's waste management hierarchy prioritizes reduction, reuse, and recycling of C&D materials over disposal. Contractors and demolition companies are responsible for proper segregation on-site or at transfer facilities. The volume and composition of C&D waste vary widely depending on project scope, building age, and materials involved. Effective sorting and diversion reduce landfill burden and create economic value through material recovery. If you need to arrange collection or processing, site clearing and debris removal providers can handle material management for your project.