Moen is upgrading their tub and shower valve system, and for most homeowners and all contractors, this is great news. M-CORE valves are easy to install and give you so much flexibility to upgrade down the road.

Some people who may have concerns are homeowners with their Weymouth showers built on the old Moentrol system. What happens if you need to replace your Weymouth trim?

Do you have to replace the valve, too? Or maybe you want a Weymouth shower with M-CORE. Is that available? These are questions that need to be answered.

Frequently Asked Questions About Weymouth + M-CORE

If you have a question that is not answered here, please do not hesitate to contact us.

Can I Upgrade Weymouth Trim to the M-CORE Valve System?

Yes! But only with M-CORE Series 3. You can see all Weymouth M-CORE trim options here. You can get Weymouth valve trim, transfer trim, valve with transfer trim, as well as complete shower and tub and shower trim options.

The designs aren’t exactly the same, but they remain true to the spirit of the Weymouth collection. On the left, we have old Weymouth, and on the right, we have the new:

Is the New Trim Backwards Compatible?

No. If you want to install new Weymouth trim in your shower, it will have to be on an M-CORE valve. The reason is it’s a completely different connection and cartridge system.

Will Moen Still Make Weymouth Trim for Moentrol Valves?

No. If you want to install new Weymouth trim in your shower, it will have to be on an M-CORE valve.

What’s Different About the New Weymouth Trim?

It looks very similar to the old trim, except the new Weymouth designs pop a little more. They also do a better job of concealing hardware and the other parts of the valve that you don’t want to see.

How Do I Know if My Weymouth Shower Is Built on M-CORE Valves or Moentrol?

Although you may not know much about what you’re looking at when you examine a valve, it’s pretty easy to tell the difference. Both valves are made with brass bodies, but M-CORE (pictured on the left) has more of a polished sheen to it. Whereas, Moentrol (pictured on the right) has more matted brass color.

Note: the pictured valves are for valve and transfer assemblies, which allow you to divert water from the tub to the shower, and vice versa. If you don’t have a tub, it’s just a shower installation, then the valve configuration won’t include the top part (diverter).

Buy Moen Weymouth at PlumbersStock

As Moen describes it, Weymouth’s gracious Victorian details include porcelain inlays with antiqued decorative script and a refined shepherd’s spout. Elegant, traditional design details and distinctive finishing touches present a sense of uncommon luxury in the Weymouth collection.

Distinctive accents include porcelain inlays that feature Euro-influenced decorative script and signature styling elements to make an extravagant statement in your traditional bath. Coordinated lighting and accessories make an extravagant design statemen

Weymouth’s gracious Victorian details include porcelain inlays with antiqued decorative script and a refined shepherd’s spout. Elegant, Traditional design details and distinctive finishing touches present a sense of uncommon luxury in the Weymouth collection.

Distinctive accents include porcelain inlays that feature Euro-influenced decorative script and signature styling elements to make an extravagant statement in your Traditional bath. Coordinated lighting and accessories make an extravagant design statement.

Moen Weymouth M-CORE 3-Series With Integrated Transfer Valve Trim. M-CORE™ is shower design on your time. This valve system is simpler and faster to install, and offers additional functionality with desired style choices to create an ideal shower environment.

Moen has conducted extensive research to create M-CORE, and what drives the design is a passion to make the workday more streamlined for plumbers and to give more freedom in showering functionality and design whether in new construction or remodel projects.

Homeowners and designers will enjoy M-CORE’s improved style and finish options including perfectly matching mixing and transfer trim, and attention to detail that reflects a desire for a dream bathroom.

Once installed, M-CORE valves, with new 3-Series trim, have pressure-balancing capabilities designed to control temperature fluctuations in the event of water pressure changes in the home. They also feature volume control, allowing you to adjust the flow of water.

This Trim Kit Requires A M-Core 3-Series Mixing Valve With Integrated Transfer Valve To Complete Installation
Integrated M-Core Transfer Valves Can Control 2 Or 3 Showering Devices, A Simple Transfer Cartridge Modification Changes The Valve’s Flow From Two Outlets To Three Outlets
Important: When Using 3 Showering Devices, Transfer Valve Cartridge Must Be Modified. Simple Cartridge

Modification Changes The Valves Flow From Two Outlets To Three Outlets. See Transfer Valve Instructions For Additional Information.
Important: When Using 2 Showering Devices, Designated Outlet 3 Must Be Capped. Caps Are Not Included With The Transfer Valves.
M-Core Valves, With 3-Series Trim, Have Pressure-Balancing Capabilities Designed To Control Temperature Fluctuations In The Event Of Water Pressure Changes In The Home
Features Volume Control, Allowing You To Adjust The Flow Of Water For Greater Functionality