So you've finally decided upon the layout of your new bathroom or ensuite. But with so many different shower tray sizes available, how do you know which is the right one for you?

Start with your existing shower tray

If you are replacing like for like, and simply installing a brand new shower enclosure, it should be just a simple matter of measuring your old shower tray. Grab a hold of your trusty old tape measure and take the measurements along each side to find the width and length.

If it's a quadrant shower enclosure, you will also need to find out the radius, and there is an easy way of doing this (as long as it's not an offset quadrant shower enclosure). Measure one side, this will give you the length, then measure from one side up to the point the line of the enclosure starts to arc.

Use this table of quadrant shower tray sizes to work out the radius:

Measurement 1 Measurement 2 Radius
800mm 300mm 500mm
900mm 400mm 500mm
1000mm 500mm 500mm
1200mm 700mm 500mm
--------------- --------------- --------
800mm 250mm 550mm
900mm 350mm 550mm
1000mm 450mm 550mm
1200mm 650mm 550mm
--------------- --------------- --------

Use a cardboard cut out

One way of accurately marking out the position of your new shower enclosure, is to draw it out on a piece of cardboard. Find a sizeable piece from an old household appliance box and, using its straight edges, mark out the shape of your shower enclosure using a tape measure. Simply place into position in your bathroom to give you an idea of the range of shower tray sizes available to you. This is particularly handy if you are planning on installing an odd-shaped shower tray such as a P shaped design.

Handy hint: Thinking of fitting a walk in shower enclosure? Check out our walk in shower tray buying guide.

Quadrant stone shower tray

A simple quadrant shower tray made from highly durable acrylic capped stone resin

Use a 3D bathroom planner

If you're a whizz with computers, or simply want to try your hand at something a little more challenging, why not use 3D planning software to plan your new bathroom?

It's really not too difficult to master, and soon enough you'll have your very own 3D bathroom model.

Mark your waste

One very important thing to do when measuring for your shower tray is to ensure you know where your waste pipe is going. This is so that it lines up with the waste hole in your new shower tray.

Shower tray riser kits

Whilst there are a range of shower tray sizes available, shower trays also come in varying heights. Most modern shower trays feature a low level design for ease of access, but if you wish to raise your shower tray up, you can use a shower tray riser kit. The kit comprises of adjustable supporting legs and a clip on cover, which also provides easier access to your plumbing for maintenance.


If you're ready to purchase, why not browse our comprehensive range of quality shower trays?