Faq Sections

Linear drain
Can I install it in wet room tiled floor?

Dear Pamela,

Premium drains are designed to be installed in wet room tiled floors. Please notice that the distance from the stainless steel flange surrounding the drain, integrated for sealing purposes, to the top edge of vertical frame is 15 mm, so is the maximum thickness for your tiles plus adhesive and insulation. 8 - 12 mm is the optimal tile thickness for this drain type.

Please notice that you need to create your own slope in your shower to make sure water is not pooling on the floor and we recommend to have at least 150 mm from left, right and upper drain edge to the walls. Alternatively if you don't want to worry about this you might take a look at our Showerlay Line wet room kits drain range, with this drain already integrated and waterproofed.

Kind regards,


020 7193 0953

hi, im currently converting my old 1750 x 1750mm ensuite into a wet room to achieve a wider and longer shower area. to allow me to achieve a 850mm wide shower area. Im siting a wall hung wc to the other side of this shower and then planned to fit you . . .

Hi just read the installation instructions, could you expand on this section 9 , “Distance from the shower tray surface to the top edge of vertical drain frame is 15 mm, so if you need to build up that space, use tile backer boards”. Is that h . . .


That's correct. There's 15 mm of distance from the surface of the tray to the upper edge of the tray. It's fixed and cannot be adjusted. Most of the tiles are 8 - 12mm, therefore adding a bit of tile adhesive should bring the tiles to the frame level.

If your tiles are really shallow, there are 2 solutions. First using tile backer boards of appropriate thickness and cutting it according to the shape of the slopes on the tray or using Showerlay Invisible. That type of tray doesn't have any restriction for finish material thickness and will accept thick and shallow tiles as well as marble or stone.

I will be happy to help in case of any questions.

Kind regards David

020 7193 0953

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Showerlay line
Hello, could you please tell me, how long for delivery showerlay linear 800x1000  £ 299.99 to London NW6. I would need it for Tuesday/Wednesday ne . . .

Dear Katie,

Unfortunately 800 x 1000 is not one of our standard size, we could manufacture custom  shower tray, it would be slightly more expensive and we would need few more days to produce and deliver.

Alternatively you might want to buy Showerlay 1000 x 1000 mm Line and then trim it. That's very easily and can be done with regular handsaw, doesn't do any harm to the tray. Only requirement is to trim equal bits off each side to make sure that pre-machined tray is preserved.

As it's one of our standard sizes, it is available off-the-shelf, so if you order it today before noon you will probably receive it tomorrow. Shipping confirmation will be sent just after it's in transit, with tracking details so you will be able to predict it's arrival on your own.

In case you need anything I will be happy to help.

Kind regards,


020 7193 0953

Hi, I'm planning on using your Showerlay Wiper shower tray for the shower, and your Imperboards for the rest of the room's floor and walls, to create a walk in shower/wet room. Can I just tape the joints and corners using your sealing tape and tan . . .

Hi Stuart,

We recommend to go for tanking tape and tanking liquid, which can also be used as adhesive to stick those tapes.

It is advisable to tank the whole floor and at least 500 mm up the walls from the floor.

You could also just tank the shower area and all the connections.

For any of the above using waterproofing kit will be a good idea.

Kind regards

David 020 7193 0953

Hi, our bathroom has a concrete floor and will be insulated with 100mm kingsman and then 50mm screed. Would it be best to construct a timber frame etc to site the tray former on before the floor is finished, I.e shutter the tray size within the in . . .


Thank you for your question.

There are 2 ways to install the tray, first most common one is to have it installed flushed with rest of the floor. The tray itself doesn't need insulation boards as it is based on XPS which is material providing great insulation itself.

Alternatively you can create a frame that the tray would sit onto. This may be a better solution if you prefer the same insulation under the tray as under rest of the floor. However in this case, you would have a step up, which most people want to avoid.

Many thanks for being interested in our products.

Kind regards

David 0800 060 8859 

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Hi, Do you have a side screen which we can fit to the screen say for 300 or 400mm.


The smallest available shower screen in our store is 700 mm.

However the manufacturer provides the 300 and 400 mm screens as well.

It would cost approximately £400 to receive one.

Let me know if you are interested and I will provide further details.

Kind regards

David 020 7193 0953

Do we use primer and tanking liquid over the shower liner or just over the joints.


The tray doesn't need to be primed. In addition to that, primer is sometimes completely optional. Primer should be used to strengthen the walls and increase it's absorption.

You should apply the primer on the floor and walls, prior to fitting the tray. It should be left until it's dry.

Then you fix the tray to the floor with adhesive, waterproof it and all the surrounding, then proceed to tiling.

In case of any questions I will be happy to help.

Kind regards

David 020 7193 0953

Hello. I'm actively considering this product. I understand the shower trays have a 2% slope. The thing I cannot quite figure out is regarding the shower screen. Where would the shower screen fit exactly? Does it still sit on top of the shower tray . . .


Please notice that the slope ir roughly 2%, exact value depends on the size and thickness of the tray you choose.

Shower screens should be installed right next to the tray, never on top of it. 

Kind regards

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Showerlay square
I note from your pictures that the corner drain on the shower formers is on the rleft side of the tray. Are these also available with the corner drain in the right. Thank you in anticipation. Regards David

Dear David,

Standard wet room trays in our offer have drain in left-hand side corner.

If you want to buy a tray with right-hand side corner, that would need to be a bespoke product.

The price for the tray of the same specification only with different drain position is £447.

If you're interested please let me know and I will provide details necessary to put an order through.

Kind regards

David 020 7193 0953

Square Traps
The traps seem to have compression or screw in joints for the waste pipe. Is it ok for these joints to be embedded in screed ? Do you have traps without screw in joints and that can be solvent welded to the waste pipe ?

Hello Justin,

Thank you for your question.

There's a selection of the traps available in our store, both for linear drains and wet room trays.

They are compression fitting indeed. I have sent a document showing all available traps to your email.

Kind regards

David  0800 368 9956

Underfloor Heating
Are your underfloor heating mats secondary or primary output?

The issue is not the underfloor heating, and more the insulation in the property. The mats are 150w/m2 (required for VDE approval) and is reliant on suitable insulation within the property. Insulation beneath the ufh, to ensure maximum heat goes into the room, and then insulation within the room, to ensure the heat remains in the room. In new properties, there is no issue, due to insulation standards being extremely high. In older properties, where insulation is lacking, is where we forsee an issue. If insulation is up to scratch, there should not be a problem. If the customer is concerned, or want to ensure a suitable output, a heat loss calculation must be carried out.

If you have any other questions I will forward them to the manufacturer and then reply to you.

David 020 7193 0953

Hi there, I'm wanting to use underfloor heating as the main heat source in the room, and have been advised that I may need to increase to 200W per square metre. I notice all your mats are standard 150W. Also because it's an odd shaped room, I woul . . .

Hi Tim,

We do not know any recommendation about the heating mat to be at least 200W per square metre. It depends on many factors like type of the building, insulation etc.

Our mats have been supplied many times for a primary heating source.

We do supply a cable, please have a look: https://wetroomsdesign.co.uk/magnum-underfloor-heating-cable-1941-m#/130,thermostat,not-include/137,spacer-strips,not-include

Kind regards

Is the sunfloor electric heat Mat compatible with nest learning thermostat?


I can confirm that Sunfloor heating mat is compatible with more thermostats than just those of Sunfloor brand.

To confirm if it works with Nest thermostat, you would need to make sure that your specific thermostat is compatible with 150W/m2 electric heating mat.

Kind regards


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Dear Sirs, we are intresting in 3 meters width waterproofing membrane? Is it possible to produce such? It would be regular 400-500 sq m orders per month. Thank you!


Those membranes are only available in 1 or 2 m widths. I can speak to the manufacturer if 3 m version can also be made, however it would be hard to transport and would be significantly more expensive.

Please let us know if 1 or 2 m versions are acceptable and we will prepare a special offer for you because of the wholesale nature of your request.

Kind regards

Adam S

017 0927 3601

can i fix Imperboard direct to a timber stud wall [ without ply shearthing ] and if so what centres are the studs best set at? thanks j

Dear Customer,

Yes you can fix to a timber stud wall. You can use 10 or 12mm: 10mm - 300mm centres, 12mm - 400mm centres.

I am happy to assist if you have any questions.

Kind regards

how long after manufacture can i use it. I've got 2 bags that i purchased from you last august 1 batch number 21/18. and 1 29/18. thanks

Dear Daniel,

Shelf life of the Nanofug Premium is 12 months, therefore as long as it's not been opened it can still be used within several months.

If the bags have been opened they are probably no longer usable and you will need to supply a new product.

I will be happy to assist if you have any questions.

Kind regards

David 020 7193 0953

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What shower tray thickness should I choose for my timber floor wet room? Do I also need tile backer boards to level up rest of the floor? Can I buy them in your store? Thanks

Dear Ryan,

There are 3 thicknesses available: 20, 28 and 35 mm and they state how thick shower tray is on the edges. They are much shallower near the drain, which is a result of having premachined diagonal slopes towards the drain.

Floor boards are usually 20 mm thick and to install the shower tray you need to remove them to expose the joists, create battons, fix them to the joists and then mount at least 18 mm thick marine ply between the joists. This will create solid even support for wet room kit, which requires to be underboarded beneath entire surface. 

By doing this, you will actually replace the floor board with tile backer board and this will allow to avoid total floor height increase.

Alternatively you can lay the shower tray straight on top of the floor boards but you will need to use tile backer boards to bring up rest of the floor height to the shower tray level.

You can find range of tile backer boards here.

Peter 020 7193 5485

Is it necessary use tanking kit to install this tray?

Dear Simon,

The Showerlay comes with already integrated and waterproofed 500 mm long stainless steel channel drain. Shower tray itself doesn't require additional waterproofing, however we always recommend to do this, especially for timber flooring. Floor/wall joints as well as the splash area should be protected against water and that's where the tanking kit comes really handy.

Waterproofing kit which can be included to this product, is very efficient, one kit covers 3.2 square metres, contains 4kg tanking liquid, 1l primer, 10m sealing tape, 2 corners and 2 pipe collars. It can be purchased for £59 each, while normal price is £99.

If you have any questions I will be happy to help.

Adam 017 0927 3601

What is delivery time for concealed shower tray?


Showerlay wet room kit former is available for next day delivery and same day dispatch if order is placed before 3 o'clock. Our courier, TNT delivers from 9am - 6pm. Tracking number with shipping confirmation is sent just after goods are in transit. There's no additional delivery cost.

If you have any questions I will be happy to help.

Peter 017 0927 3601

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