Which signs indicate the need for replacement or re-cover of a low slope roof?

Choosing to focus on the signs of moisture and condensation is key to understanding the health of a low slope roof. This is because moisture accumulation can lead to significant damage over time, potentially compromising the roof's integrity. When there are indicators of moisture infiltration, it typically suggests that the roofing system is failing to perform its fundamental duty of keeping water out. This could lead not only to leaks but also to mold and rot within the structure, which further deteriorate the roof's lifespan and safety.

Visible surface cracks can indicate some level of wear but are not definitive on their own that a roof needs to be replaced. High energy bills might suggest insufficient insulation or other issues outside of the roof's waterproofing layer, making them not solely indicative of the roofing's condition. Algae growth, while it can contribute to roof decay, is often a cosmetic issue rather than one that directly necessitates replacement or recovery. Therefore, while these signs may point to specific issues or maintenance needs, moisture and condensation are the most critical indicators for assessing the viability of a low slope roof.