How to Install a Mixer Shower

Written by Screwfix

Mixer Showers are not as complicated to install as it may look like. However, you must have a solid understanding and knowledge of how they work before you proceed to a DIY project.

There are several types of showers that are installed in a property so make sure you know how to work it. A mixer shower takes in cold and hot water feeds from your boiler system then mixes both feeds in a chamber that is within the shower unit. It then enables you to control the temperature and the rate of flow through dials and levers. It applies the same principle in your kitchen as well.

General Installation Guidelines

First of all, when you go to a DIY Store, buy a tap head and a mixer tap. Installing shower fittings and bathroom showers differ greatly depending on the particular product at hand. Every product is made differently and its best advised to follow the manufacturer’s instructions which come with the product. Hence the instructions below are not intended to be used as detailed fitting directions:

1. Heating System for the Mixer:
If you have a heating system installed in your property, you can rely on it for heating the water. However, when you purchase the shower mixer valve, make sure it is suitable for the particular heating system. Most central heating systems in properties can also heat up the water but not always; for instance, you may have an immersion heater and electric radiators for providing hot water. The common types of hot water systems are:

Standard vented cylinder, which features low pressure collected cold water and low pressure collected hot water

Combination boiler, which does not store hot water or cold water

Unvented cylinder, which features mains/high pressure cold water and mains/high pressure stored warm water

2. Water Pressure:
In order to get your home shower mixer to work, make sure you have water pressure of at least 0.1 bars. If the pressure is not up to 0.1, you will need to use a pump to get the flow working.

3. Thermostatic or Manual Mixer:
Although manual showers are relatively cheaper and simple to use, they involve a high risk of scalding. Compared to that, a digital thermostatic mixer allows flexibility and you can adjust the right temperatures accordingly. Therefore, if the budget allows, get the thermostatic one.

4. Distances and the Height
According to Grohe recommendations, if the body height is about 1.8 metres, the shower mixer should be approximately 1.262 metres. Accordingly, the head showers should be 2.373 metres.

5. Mounting
Although there are different designs available but chiefly they fall into two categories: surface and recessed mounted showers.

Recessed shower valves are used on hollow walls. The advantage is that the valve body and the supply pipes can be accommodated behind the wall, hence giving a neat appearance. These are ideally used in small cubicles. Surface mounted valves enable the valve to be visible, where the pipework is installed right on the surface.

Company Profile:

Screwfix is the UK’s largest direct and online supplier of trade tools, accessories and hardware products. With over 30 years’ experience in the industry, we despatch tens of thousands of parcels every week for next day and weekend delivery to tradesmen, handymen and serious DIY enthusiasts all over the UK.

To view the full range of mixer showers from Screwfix customers can visit our website.