How should rolled roofing be installed regarding the slope?

Rolled roofing is specifically designed for low-slope and flat roofing applications. When installing rolled roofing, it is crucial to adhere to this guideline because the material is less effective at shedding water compared to shingles and other roofing types that are intended for steeper slopes.

On low-slope systems, the rolled roofing forms a waterproof barrier that can effectively handle minor water pooling, which can occur due to the lack of a steep pitch. The flat or low-slope installation allows for proper lap sealing and minimizes the risk of water infiltration. Hence, this type of roofing is ideal for structures such as sheds or garages where the roof design does not lend itself to a steep pitch.

In contrast, steep slopes pose challenges for rolled roofing, as the water could run off too quickly, potentially compromising the integrity of the roof and worsening its performance. Therefore, the recommendation for rolled roofing is specifically to be used on flat or low-slope roofs to ensure durability and maximum effectiveness.