Ordered 10mm sts tile backer board, was sent marmox

[jacko555]

This was an order from Wickes.

Order 16x 600x1200x10mm STS tile backer board @£8.50 a sheet

Been sent 14 marmox 600x1250x10mm Marmox and 2x STS boards.

Should I care? Can I use them interchangeably? Did I get a bargain? Should I call and ask for the correct stuff or leave it?

 

[JaimieH]

Don't worry about it, both are fine to use and personally I prefer Marmox. Make sure you use the correct washers when fixing to the walls/floor.

 

[jacko555]

Make sure you use the correct washers when fixing to the walls/floor

That's the problem. I have the rectangular sts fixing brackets and adhesive.
Marmox use the circular washers and scrim tape.
While sts brackets will probably be fine, unsure about the glue instead of scrim tap.
Wickes dont even sell the marmox fixings so its ballsed up my plans.
I called them, they said they'd get back to me today. Obviously they haven't

 

[JaimieH]

If it's the Mega Adhesive then it's really strong stuff. Use the adhesive along every joint too, just let it foam up and after about 15mins use a sharp scraper or chisel to cut the excess off the surface. The rectangular washers will be fine also.