I tried numerous materials from fabrics to plastics some with higher gain, I found that those with higher gain had problems with uniform reflectivity. The way I tested this is using Avia's full color field test's, while looking at the screen with these single colors the higher gain screens would have brighter and duller parts on the screen, and as you walk around the room the color shifts and is not uniform across the screen. With the Dazien material you get a perfectly uniform reflection that does not change as you move around holding the integrity of the projected image. For me this outweighed the slightly lower brightness, but as our room is light controlled this was not a big issue for me. Also the Dazian material is a thin stretchy PVC(so it's easy to clean) with very fine ridges that run diagonally that can only be seen from a few inches away, I think this is what also gives it an excellent uniform reflectivity
I must say
this thread is looking interesting and I may try that material and see how it stands up to my tests.
I built my first screen using a method similar to
this with an extra frame in front(using angled edge board) covered in velvet for the picture frame, but it would be easier to use
this material. You could also try
this, but I think the strain of the material would pull the sides in and warp the frame.
What I now use is an aluminum frame covered with velvet with springs to keep constant tension on the screen(similar to a trampoline) This is more costly because I had to have the frame custom bent, but the springs were actually cheaper to have custom made than off the shelf. Here is a pic of the back
And here is the profile of the frame
cheers
