• LWIC eliminates the need to tear off the existing roof during reroofing, since it can be poured directly over the previous membrane. This reduces the mess and expense of tearing off old insulation, minimizes debris, and causes less negative impact on the environment.
• Since traditional tapered insulation systems involve multiple layers of board to create a sloped system, they require more time, money, and labor.  LWIC systems typically save $2-4 per square foot, when compared to tapered polyiso roof systems.
• LWIC roof decks have built-in fireproofing capabilities, saving owners and roofers money and mitigating the need to install additional fireproofing.
• LWIC roofs can save building owners reroofing costs, since they are less likely to be destroyed in high-wind environments.

• It is more efficient to lay a single EPS holey board rather than layer multiple ISO boards over one another (especially as those boards have to be nailed or drilled into the roofing substrate).
• LWIC roof decks save time in reroofing projects because they can be installed directly over the existing roofing in most situations.

With traditional reroofing projects, the roofing contractors must entirely tear away the old roof and dispose of it in a landfill. LWIC roof decks can be installed directly over the existing roof.

LWIC roof decks have no joints and are dimensionally stable, creating a monolithic surface that reduces stress. LWIC also slows the heating and the cooling of the membrane, reducing thermal stress compared to traditional insulation systems and increasing the overall life span of the roof.

LWIC roof systems provide a stable R-value, unlike traditional ISO boards, which lose about 4% of their R-value every year. Over time, LWIC roof decks provide significantly better insulation performance than traditional roof deck systems.