Tantimber Poplar Cladding, with its unique texture pattern that keeps the wooden lines to last. Tantimber Thermowood Poplar cladding, with its reinforced construction, offer a durable cladding product for those seeking the aesthetics of poplar. Even though it is in the hardwood category, because of its lightweight structure Tantimber Thermowood Poplar products provide long life in the cladding as well as ease of application.