This thesis examines selected post-consumer waste materials for use in the building envelope including end-of-life tires, polyethylene terephthalate (PET) bottles and paper/cardboard fibres. Based on the state-of-the-art of their reuse in construction, various scenarios for each material are simulated. These are broadly categorised into three use types within the envelope: thermal mass, insulation, and interior panelling. These scenarios are simulated in EnergyPlus, against a high performing residential base case using conventional materials for comparison, located in Calgary, Alberta. The associated embodied energy and global warming potential of each scenario are evaluated in OpenLCA. Most cases, excluding tire chip insulation, yield annual heating and cooling loads within a 10% margin of the base case, making them suitable for high performing buildings. Thermal mass components which prioritise reuse and undergo minimal processing such as whole earth-filled tires and whole PET bottles set in concrete blocks, are most effective at mitigating base case impacts due to the large proportion of thermal mass within the overall envelope.