18 Oct 2023

Troubleshooting a Leaking Mixing Valve at the Shower and Tub

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As a home inspector, one of the common issues I encounter is a leaking mixing valve at the shower and tub. This problem can lead to water wastage, increased utility bills, and potential damage to the surrounding areas. In this article, we will explore the causes of a leaking mixing valve and provide some troubleshooting tips to address the issue effectively.

Causes of a Leaking Mixing Valve:

Worn-out Seals: Over time, the rubber seals inside the mixing valve can deteriorate, causing leaks. These seals are responsible for controlling the flow of water and maintaining the desired temperature.

Loose Connections: Loose fittings and connections within the mixing valve assembly can result in leaks. Vibrations from regular use can cause these connections to become loose over time.

High Water Pressure: Excessive water pressure can strain the mixing valve, leading to leaks. If your home has high water pressure, it’s important to consider installing a pressure regulator to protect your plumbing system.

Troubleshooting Tips:

Inspect and Tighten Connections: Start by visually inspecting the connections around the mixing valve. Using a wrench or pliers, tighten any loose fittings gently. Be cautious not to overtighten, as it may cause further damage.

Replace Seals: If the leaking persists, it may be necessary to replace the worn-out seals within the mixing valve. Consult a professional plumber or follow the manufacturer’s instructions to ensure proper replacement.

Check Water Pressure: Measure the water pressure using a pressure gauge. If it exceeds the recommended range (typically between 40-80 psi), consider installing a pressure regulator to prevent damage to the mixing valve and other plumbing components.

A leaking mixing valve at the shower and tub can be a frustrating issue, but with proper troubleshooting, it can be resolved effectively. Remember to inspect and tighten connections, replace worn-out seals, and regulate water pressure if necessary. If you’re unsure about any of these steps, don’t hesitate to consult a professional plumber who can provide expert guidance. By addressing the issue promptly, you can prevent further damage and ensure a leak-free bathing experience.

Proview Professional Home Inspections performs maintenance inspections for homeowners with no bias! When you get a roofer for example, most if not all the time, the roofer will always find something that needs repair. Lets face it, that is where they make their money, we perform inspections ONLY and not trying to make money from items we find.


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