New from Westlake Royal Building Products, Dryroll is a universal ridge vent and weather block. Designed to safeguard the ...

Roof ventilation is a system designed to manage temperature ... and hot attic air is expelled (usually through box vents or ridge vents). These inputs and outputs must be balanced and spaced ...

Most houses in the neighborhood have ridge vents on all their ridges ... top of the insulation and the underside of the roof. This kind of system treats the attic as part of the indoor space ...