What type of material should be utilized in a mitigation system to secure vent pipes?

Using hangers and strapping to secure vent pipes in a radon mitigation system is the most effective choice because they provide the necessary support to ensure that the vent pipes remain in place and function as intended. This type of material is designed to withstand environmental factors and the weight of the pipes, preventing sagging or disconnection that could compromise the system's performance. Properly securing the vent pipes is crucial for the effective ventilation of radon gas, as it ensures that the gas is safely expelled from the building and does not re-enter the occupied space.

While flex pipes might allow for easier installation in certain scenarios, they do not provide the structural support needed for stabilization over time. PVC supports are also not ideal for securing vent pipes, as they may not offer the same level of robustness and durability as hangers and strapping. Therefore, utilizing hangers and strapping helps maintain the integrity of the mitigation system, ensuring that it operates effectively to reduce radon levels in indoor environments.