saveBOARD Roofing Substrate is engineered to be durable, moisture, and mould resistant panel, which will not disintegrate or delaminate in the presence of water. Our Roofing Substrate has been used extensively in the USA for > 12 years in real-world installations in the harshest climates prove its unmatched resilience. The most iconic project to date is the roof underlay of the Tesla Gigafactory One in Sparks Nevada.