What are three common methods for installing re-cover roof systems?

The selection of mechanically fastened, adhered, and loose-laid as the correct answer reflects the standard methodologies used in the installation of re-cover roof systems.

Mechanically fastened systems involve attaching roofing materials to the existing roof substrate through the use of screws or fasteners, which ensures stability and durability. This method is particularly effective in areas prone to high winds, as it provides strong resistance to potential uplift during severe weather.

Adhered systems require the use of adhesives to bond the new roofing membrane to the existing roof surface. This method allows for a seamless application, which can enhance energy efficiency by creating a smooth surface that minimizes air and water intrusion. It also provides the opportunity for better insulation properties.

Loose-laid installations involve placing the new roofing material directly on the existing roof without attachment, relying on the weight of the material or ballast, such as gravel or pavers, to keep it in place. This system is useful for allowing for ease of removal or replacement and can be beneficial in systems where future upgrades might be needed.

The other choices, while they may refer to roofing concepts or materials, do not accurately describe the common methods specifically related to the installation of re-cover systems. Understanding the distinctions among installation methods is key for effective roofing practice