Wetroomstop Quadra Offset Shower Base 800mm x 1200mm x 20mm FastFlow Dallmer

28 Reviews
£226.09 Save 40%
Tax included

The 800 mm x 1200 mm shower base is 20 mm thick before tiling. Designed for level access showers without a step up. The shower base is produced from XPS foam and covered on both sides by a cementous coating and a reinforcing net. This surface is ready to tile onto. It's light yet flexible enough to absorb movement within the structural floor. 

The shower base comes with a pre-made fall from each corner to the drain thus helping the tiler. XPS foam has great acoustic properties and therefore is especially useful in the UK when you can generally here what's going on upstairs! It can be easily cut if necessary, say around pipes or other obstacles. The height off the drain is 10mm, however this can be extended to 17mm using the adaptor provided   

Tray size
Tanking kit
Drain Cover
Waste Trap

The 150 mm x 150 mm Dallmer gulley has an offset position and is really easy to install. The K frame is factory fitted on the surface of the shower base and a stainless steel plate is factory fitted to the underside of the shower base to provide a perfect surface for the trap sealing ring to connect to. It comes complete with a standard stainless steel cover and a 5 mm solid stainless steel cover upgrade is available. If you are using thicker tiles an add-on frame adjuster is included. The outlet pipe is ABS and therefore can be solvent welded to provide a great connection.   


Data sheet

1200mm x 800mm
Drain position
XPS Foam Sheet
Fibre glass mesh & cementous glue.
4-way 2% towards the drain
Tanking kit
Drain surface
From above (Easy clean system)

Specific References

Parts included
When buying our Shower Base you will also receive a special bucket with a Waterproofing Kit. With this kit you will be able to insulate and waterproof all your shower area and prepare it for tiling.

  • 4 kg of PCI Lastogum liquid foil
  • 1l of primer
  • 2 sealing internal corners
  • 2 sealing cuffs 10 x 10 cm
  • 10 m of sealing tape
Dallmer waste trap
Dallmer type 48 KE shower trap is included with our Shower Base. It featuers ball joint connector adjustable by 15 degrees. For more information and technical drawing please see Attachments tab above.

  • Top size: 150 x 150 mm
  • Frame size: 143 x 143 mm
  • Height: 86.5 mm
  • Width: 108 mm
  • Outlet : 50 mm
  • Base material: ABS
  • Base material: 304 stainless steel
  • Standard: DIN EN 1519
Dallmer waste technical diagram
You can choose which grating you want with your Shower Base tray. We offer three different patterns to suit your needs.

This grating is stamp formed from thin stainless steel and features default well known stripes design.

This grating is laser cut from thick piece of premium stainless steel and features circles design.

This grating is also laser cut from thick piece of premium stainless steel and features stripes design

Dallmer waste trap

Parts included
Parts included with every Wetroomstop Dot Shower Base:
  • Sturdy XPS board
  • Integrated square drain
  • Drain cover
  • Dallmer shower trap
  • Wetroomstop Waterproofing Kit
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    Do you sell the waterproof liquid separately. If so how much would 5 litres cost?

    No we do not currently sell the waterproofing liquid separately. You can purchase an additional tanking kit if you wish. It comes with 4 kg of lastogum, 1L of primer, 10m of sealing tape, 2 internal corners, and 2 pipe collars

    I have a 1300x700 area which I want to fit a wet room shower tray. Am I able to buy a 1400x900 off yourselves and cut to fit?

    Hello Luke,

    Thank you for your message.

    I can confirm that our trays are trimmable and there are several options for your 1300 x 700 shower area. 

    We can manufacture a bespoke tray to match that size exactly. It would take about 10 days and would have higher price but it wouldn't need any extra materials or effort,

    • 900 x 1400 tray with central drain, so you can cut it down to size symmetrically,
    • 800 x 1200 tray, cutting down to size the 800 mm dimension and extending 1200 to 1300 using tile backer boards, which are made of similar material to what the tray is made of.
    • If you can afford waiting, in my opinion it would be the best idea to go for a custom size wet room tray. 

    In case of any other questions I will be happy to assist. 

    Kind regards

    Chris 020 8145 4804

    Hi I am looking to fit a wet room and the dimensions I have are 1000 wide by 800 deep. I am struggling to find a tray that size with a centre drain. Can I cut down a 1200 by 800 reducing the 1200 to a thousand and simply allow for a packer (full she ...

    You can trim down a tray to fit those dimensions, however an Quadra Offset tray has the  drain 450mm from the short end of the tray. Which means that your drain will still not be directly in the centre of the tray. The best solution would be a bespoke tray in this case. If thats something you would be interested in please contact our customer service representatives and they will gladly assist in ordering a bespoke tray.

28 Reviews

Excellent product. Arrived on time but due to damage caused in transportation another had to be shipped. Not been fitted yet but I'm confident it will do the job.

very impressed


Good quality, unfortunately I chose wrong size for my shower. Returned and received another one promptly.

Great item, very easy to install!

Installed and using for around 6 months now. A nicely finished shower base. The purchasing and delivering process went without a hitch.

Good product
Bought one, already installed easily, works fine so far

Really good value and much better than most offered in shops. Product arrived in good condition and was a pleasure to use. I would definitely use wetroomstop again. Next day delivery :-)

Placed order online, received phone call within the hour and product delivered the next day.

Bought this a while ago, only just installed, worth the wait. Looks great ;)

The best
This item was purchased several weeks ago but fitted today. Everything is fine, superb value for money. Thank you so much!

Thank you :-)
Product as described, fast and efficient delivery. Will recommend to family and friends :-)

spot on, thanks

Amazing shoower base! And plenty of shapes to chose from :D

Not the best quality, but works ok


Have purchased from company a couple of times and each time items have been great and easy to install.

Good value.
Everything was perfect ;)

Very helpful on the phone and and polite. Very good service. Product arrived on time. Bought as a replacement for the old one and very easy to install :P

exactly as described
excellent product quality and service levels

next day delivery
next day delivery

Delivery next day. The plumber did say it was harder than normal to fit but I think it looks fantastic.

5 stars
Easy to fit, would highly recommend. Looks far more expensive than it was.

Fantastic quality
Quick, competitively priced website.

Five Stars
I installed this shower screen in my new shower which was quite easy to do, looks great. Arrived on time well packed (complete with tray & drain)

Fantastic value for money and looks awesome

Very nice
Products delivered on time no fuss or excuses. Overall appearance is just stunning!

easy to use, works well
easy to use, works well

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