Wedi vs Marmox, is Wedi worth twice the money?

[Del]

I've got 2 bath panels to tile, the frames are built and the tiles bought. The tiles are 300x200 and quite light.

I've been looking at Wedi board to build the front panels. I thought this was quite expensive at £134 inc VAT & postage (I couldn't find anywhere local). The price came from this place by the way - Wedi tilebacker board, save 29% off Rrp at fountaindirect.co.uk (2500x1200x10)

I've since noticed that Marmox tiler backer is a lot cheaper than Wedi. I need 4 Marmox boards (1250x600x10) and even with the minimum order qty of 6, it works out around £65. £75 with some steel washers.

So my questions are:-

1) Is Wedi that much better than Marmox?

2) If it is better, would it matter for this job?

3) Do any of the big builders merchants supply Marmox?

4) Do you have to use the Marmox tape? I have a few reels of plasterboard tape left over, would this be ok?

ETA - My tiler/bathroom fitter refused to use a backing board. He preferred plywood and PVA. One of these baths is new and part of a refurb project. The other is in my own house. I had to remove the panel to fix a leak and not a single tile had adhered to the panel!

He's off the job now and I'm busy sponging and scraping PVA from the bathroom walls

 

[Turkish tiler]

I have used both of them cannot see the different only difference wedi is twice is the price. C
heck out marrmox web site (marmox uk) they have got all details for stockist near you

 

[Perry]

is the bath being submerged ? if not does it need the be tanked ? plasterboard would be fine 95% of the time for bath panels works out about £3 for the same size sheet

 

[Del]

Not submerged, but one of the baths shed all of its tiles from the plywood and there are water stains on the floor from kids splashing around. Better safe than sorry.

 

[Perry]

pva plywood he wasent a tiler if its splashing it will be fine is it like this ?

http://www.tilersforums.com/members/pjc-albums-dewalt-picture33801-2011-10-07-12-18-07.html

 

[Perry]

pva plywood he wasent a tiler if its splashing it will be fine is it like this ?

http://www.tilersforums.com/members/pjc-albums-dewalt-picture33801-2011-10-07-12-18-07.html

fingers are to big

 

[Del]

You're right he wasn't a tiler, he charged twice as much for a start and then did a crap job.

Both baths have a box built around them, with a border of tiles around the edge. I'd quite often see water sitting on the edges and some of this has leaked through. The second, new bath has large flat sections on the left and right. This flat section is built of ply too. I'm wondering whether or not to rip the ply off or put Marmox over the top of it.

The first bath looks a bit like this, minus the mosaics. This is NOT the actual bath, just a picture I found on the web.