Joost van der Waal

Joost van der Waal is an ecological insulation entrepreneur based in the Rotterdam region. He runs his own biobased insulation business, personally performing insulation jobs and advising clients on sustainable home improvements. He operates an online platform (isoleerbewust.nl) that connects homeowners with biobased insulation professionals across the Netherlands. He has created an online course for DIY enthusiasts and publishes knowledge articles that attract thousands of monthly visitors. His work focuses on tangible, hands‑on contributions to sustainability through eco‑friendly building materials.