08:17 AM EDT, 09/10/2025 (MT Newswires) -- Northstar Clean Technologies ( ROOOF ) Wednesday said its asphalt shingle reprocessing facility in Calgary produced its first liquid asphalt from end-of-life tear-off shingles, which were then converted into solid pellets.

Tear-off shingles are discarded when roofs are removed or replaced and are typically sent to landfills.

The company previously said it had produced liquid asphalt from manufacturing waste shingles, which are rejected for design or quality reasons and also end up in landfills.

"Tear-off shingles represent the largest portion of the shingle waste stream, and successfully producing liquid asphalt from this material is an important step for not only the Calgary facility but more importantly, validates the robustness of the technical process," chief executive officer Aidan Mills said.

"This confirms the ability to produce high-specification asphalt from both manufacturing waste and tear-off shingles, and critically, confirms the process successfully pelletizes the liquid asphalt from tear-offs."

Northstar shares closed down $0.01 at $0.34 Tuesday on the TSX Venture Exchange.