What type of insulation is commonly used in low-slope roofing?

Rigid board insulation is commonly used in low-slope roofing due to its properties that align well with the unique requirements of this type of roofing system. This type of insulation provides high thermal resistance, making it effective for reducing energy consumption and maintaining building comfort.

One of the key advantages of rigid board insulation is its ability to withstand compression, which is essential for roofs that may have traffic or placed loads upon them. In low-slope roofing systems, where water drainage can be less efficient, rigid board insulation also helps to create a more stable substrate for roofing membranes by maintaining its form and performance over time.

Additionally, rigid board insulation can be installed in several manners, such as above the roof deck or as part of a composite insulation system, providing flexibility in design and installation. Its resistance to moisture absorption further enhances its suitability for roofing applications, ensuring durability and performance even in varying environmental conditions.

In contrast, fiberglass batts and loose-fill cellulose are not ideal for low-slope roofing as they can become compressed or trap moisture, leading to reduced effectiveness and potential mold issues. Spray foam insulation, while it has its benefits, can be costlier and might not provide the same level of compressive strength as rigid board insulation, making it less frequently used as