When installing a sleeve through a poured slab roof, which type of material should be used?

Using SCH 40 PVC pipe for installing a sleeve through a poured slab roof is the most suitable choice due to several factors. SCH 40 PVC is known for its robustness and resistance to various environmental conditions, including moisture, which is particularly important in a roofing application where exposure to elements is a concern. Its structural integrity allows it to withstand the pressures and loads associated with a poured slab.

Moreover, SCH 40 PVC has excellent insulation properties, helping to minimize heat loss or gain, which can be essential in maintaining indoor climate control and energy efficiency. The smooth interior surface of PVC also ensures minimal friction, reducing the risk of wear and facilitating easier passage for wires, conduits, or plumbing that may need to run through the sleeve.

While other materials may offer specific advantages, such as metal's durability in high-temperature conditions or flexibility from rubber tubing, these materials do not typically have the same balance of strength, moisture resistance, and ease of installation as SCH 40 PVC in the context of roofing applications. Composite materials may combine benefits of different elements but often lack the proven resilience and heat resistance of PVC. Therefore, SCH 40 PVC pipe stands out as the most effective option for this application.