Inverted roofs, featuring waterproofing below insulation and ballast on top, are ideal for concrete decks, despite their complexity and thickness.
Inverted Roofs offer a unique approach to roofing, where the waterproofing layer is applied directly to the deck, followed by thermal insulation on the “wet” side and a ballast layer, such as gravel or paving, to secure the insulation.
This design, also known as an “upside-down” or “protected membrane” roof, provides excellent protection for the waterproofing membrane by shielding it from weathering and thermal stress, which can significantly extend the lifespan of the roof.
Inverted roofs are particularly well-suited for concrete decks that can support the heavier load of ballast, making them an ideal choice for projects where durability and low maintenance are priorities.
While this roof type requires careful planning and consideration of condensation risks and insulation flotation, it excels in scenarios where enhanced thermal performance and protection are needed.