Today marked the beginning of the end of the exterior structural fabrication at 60 Bragg Hill. After many months of vertical development of the concrete and steel reinforced walls, the roof installation was finally started. A 40-ton crane assisted the Thompson Builders team in hoisting the more than 20 Structural Insulated Panels that will define the roof of the Chester County Eco-home. The prefabricated 10 inch thick foam and OSB sandwich panels were custom made for 60 Bragg Hill by SureTight near Pittsburgh, Pennsylvania. They were trucked across the state to 60 Bragg Hill last week for today’s installation.
The larger of the sectional panels, spanning 24 feet weighed just under 800 pounds. While that may seem heavy, they’re not. The weight per square foot is very low given the large surface area that they cover and the fantastic R-45 insulation value they provide. These roof panels are a critical component of the home’s thermal envelope. Because the SIPs were made to order off-site, there is no generated construction waste which is common with traditional roofing methods. The entire roof will be flown in and secured on the structure in two days.