The next installment in our series takes a look at the Exterior Portfolio brand, which is a division of Westlake Royal Building Products. Before we begin, here’s a quick recap of our previous installments of the series: Sizing Up the Best Vinyl Siding Brands, Part 1: Mastic Sizing Up the Best Vinyl Siding Brands, Part 2: Norandex Sizing Up the Best Vinyl Siding Brands, Part 3: Additional Norandex Products A Note on Warranties Like all of the brands we’re featuring in this series, Exterior Portfolio offers an excellent warranty on their vinyl siding — a Double Limited Lifetime Warranty, which can be transferred once by the original homeowner to an immediate subsequent homeowner. Let’s begin our overview of Exterior Portfolio vinyl siding … PREMIUM COLLECTION CraneBoard® Solid Core Siding® A top-performing siding with innovative thermal technology. It’s also beautiful, durable and insulated. Benefits include: Horizontal lap, as well as board & batten profiles provide additional design options Offers greater insulating power than fiber cement, wood, engineered wood, or even brick Withstands hurricane-force winds up to