Corrugated p-traps are often marked as deficient by home inspectors due to several reasons. Firstly, the use of corrugated drain piping in p-traps can lead to clogging and hinder the smooth flow of drainage. Unlike smooth interior pipes, corrugated pipes have a rough surface that can catch debris and contribute to blockages[1]. This can lead to plumbing issues and compromised functionality.
Additionally, home inspectors evaluate plumbing systems based on established standards and codes. The International Plumbing Code (IPC) sets requirements for fixture traps, including p-traps. According to the IPC, drainage fittings should have a smooth interior waterway of the same diameter as the piping being served[2]. Corrugated p-traps do not meet this criterion as their design does not provide a smooth interior surface.
By marking corrugated p-traps as deficient, home inspectors aim to draw attention to the potential problems that can arise from their use. They recommend replacing these p-traps with alternatives made from approved materials, such as smooth interior plastic, copper, copper alloy, or cast iron pipes[1]. Ensuring that p-traps meet the necessary standards helps maintain proper drainage, minimize clogs, and ensure the effective functioning of plumbing systems.
It's important to note that these findings are based on general knowledge and industry practices. For specific evaluations and recommendations for your plumbing system, it's always best to consult with a licensed plumber or a qualified home inspector.
Comments