400 x 400 mm insulated upstand for pitched roof skylight Modular Frameless making them a top choice

making them a top choice for roof domes in the UK market

310ml x 3:Ensures a durable seal around the skylight

U-Value of 1

reducing moisture

Double or triple skin units

400 x 400 mm insulated upstand for pitched roof skylight Modular Frameless making them a top choiceExplore our Insulated Builder's Upstand, perfect for pitched roof skylight installations. This upstand is designed to enhance thermal efficiency and ensure superior structural durability and weatherproofing without specific insulation materials mentioned. Key Advantages: Enhanced Thermal Efficiency: Helps maintain a comfortable indoor environment and reduces energy costs by minimising heat transfer. Exceptional Durability: Made from chipboard wood,