What are structural insulated panels (SIP) and what is the difference between SIPs and TREE TOP TIMBER FRAMES panellized wall and roof system?
SIPs is a general term used to describe a foam core panel that has interior and exterior oriented strand board (OSB) already applied to it. Typically they have expanded polystyrene (EPS) insulation, which has an R-value of 3.75 per inch thickness. An interior poly air/vapour barrier is also required. TREE TOP TIMBER FRAMES wall panellized system is similar to the SIP without the insulation and interior sheathing. The insulation is a spray applied polyurethane foam, which has an extremely high R-value of 6 per inch thickness. The insulation is sprayed into the walls once the rough wiring and plumbing is complete, much like that in a conventional house. A separate air/vapour is not required since the foam insulation also performs this function. The insulation and interior sheathing are applied after the plumbing and electrical rough in work is complete. Our wall and roof system costs less than SIPs and provides twice the insulation value. Fibreglass insulation complete with a poly air/va
