loose lay vinyl???
The Windex trick has piqued my curiosity too.
And yes, loose lay sucks, but they're very popular since they require less substrate prep making the installation cheaper.
Tile 4 You LLC Troy, MI
KERDI Shower Specialist ... DITRA Installs ... Product-Method suitability consultation. I have NEVER made a mistake, I thought I did once...........but I was wrong! - PRODUCTS ADVERTISED WITHIN MY POST ARE NOT ENDORSED BY ME!