2. What are SIPs made from?
Each panel comprises two outer timber facings and a central polystyrene foam insulation core. The outer facings are Oriented Strand Board (OSB/3) and are engineered using timber from the routine thinning of managed timber plantations. The OSB is manufactured using a formaldehyde-free bonding method.
The polystyrene insulation core is safe, non-toxic and manufactured in a low-energy steam process using a fire retardant. The boards can be recycled.
As a composite unit, the panels are an exceptionally strong, lightweight, air-tight, highly insulated and energy-efficient building material.