Crawlspaces are where spray foam thermal barrier rules get tricky. Requirements can depend on whether the space is only accessed for maintenance, whether it contains fuel-fired equipment like a furnace or hot water tank, and which spray foam product is used. Some crawlspaces may qualify for alternative protection, while others need a full thermal barrier. Because the rules vary, it's important to work with an installer who knows your local building official's expectations. Our guide explains what BC homeowners should know before spray foaming a crawlspace. Learn more here: https://westerninsulation.ca/spray-foam-thermal-barrier-bc/