The key to the Dura Technology™ Process is Royalside™ Compound, a proven blend of the world's finest raw materials. This blend, together with our exclusive DURA™ impact modifiers and premium ingredients, forms the base for a tougher, longer lasting siding. UV Tested for Color Fade Resistance
UV tests ensure your siding provides outstanding resistance to fading and discoloring. This advanced color fade protection is achieved by combining our innovative Royalside™ Compound and Dura Technology™ Process. Cold Tested For Harsh Weather
Royal tests its siding against brittleness at temperatures as low as 14°F (-10°C), ensuring your siding will maintain its superior durability, rigidity and structural integrity under severe weather conditions. Impact Tested For Strength
Extensive impact tests are conducted at 73°F (23°C) and 32°F (0°C) to ensure your siding exceeds ASTM standards and can withstand the elements, including hail, under any condition.