I got a used Da-lite high contrast (i.e. gray) screen to project my Benq W1070 onto, which should be a good fit because I have light colored walls that I can't paint and the projector is pretty bright but could use a little help with contrast. But the screen is an older model that's not black on the back, so the fabric is moderately translucent. So I'm realizing I need to put black material behind the screen to prevent light reflection that will reduce reflections off the wall behind the screen that would lower black levels. I'm thinking the easiest solution would be to thumb-tack black fabric to the wall. I figure options, in rough order of diminishing light absorbency, are velvet, felt, burlap, paper, and plastic sheeting. The viewing area of my screen is 58 x 104 inches, and the full screen including frame is 64 x 110 inches, various fabrics seem to be available in 60" widths, so that seems to fit my purpose well.
Anyone have recommendations for particular fabrics that are really black/light absorbing? And particular stores that have good prices on fabrics and cheap or free shipping?
Benq W1070 projector
Da-Lite High-Contrast (gray) Da-Mat screen
Denon X2000 receiver
Focal 700-series towers and center
JMLab Tantal-series bookshelf rears
Rythmik FV15HP sub