BUILD GREEN - Why SIPs?
Reed Construction Data/RSMeans BASF Corporation—Time & Motion Study
The use of prefabricated Structural Insulated Panels resulted in significant time and labor cost savings. Erection of the SIPs walls, roof, and dormers took 45% of the labor hours expected for conventional construction.
Rough-wiring the electrical appurtenances in the SIPs walls took 89% of the labor hours expected for rough wiring in a conventional house. (Hourly rates for the electricians were the same for both types of construction, so the labor cost savings matched the labor hour savings.)
SIPs eliminate the need to install exterior sheathing, thermal insulation, and house wrap separately. The SIP sandwich panels come preassembled, which reduces installation time.
Precut openings: with door and window openings already cut, there is less labor required on the job site to install SIPs.