Hi, I have had a new bathroom and they laid 12mm tiles onto Detra matting and then onto 10mm plyboard. I now have a one and a half INCH difference in height to the landing floor.
I want a threshold stip to bridge the two but can't seem to find anything.
Oh dear thats nowhere near thick enough even with Ditra IMHO. Hope you got a guarantee out of them. Did you instruct them to use a thin ply because you were worried about the height differential?
"I now have a one and a half INCH difference in height to the landing floor."
Yes thats quite normal. The best way to avoid that (and provide a very stable substrate for tiling) is to strip the floor right back to the joists. Lay 25mm WPB and tile over that. If on first floor I'd still put Ditra down as well.
"I want a threshold stip to bridge the two but can't seem to find anything."
Don't look in Bargain and Quick or any of the sheds - go to a tile shop or a flooring shop. They'll help you.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!