Carpet tile with wet laid dual layer nonwoven mat

A carpet tile, comprising:

• a pile fabric layer;
• a primary backing coupled with the pile fabric layer;
• a secondary backing coupled with the primary backing;
• and
• a dual-layer wet-laid nonwoven mat, the dual-layer wet-laid nonwoven mat comprising:
• a first layer comprising a plurality of glass fibers, a plurality of synthetic fibers, and a binder;
• and
• a second layer comprising a plurality of synthetic fibers, a plurality of glass fibers, and the binder, wherein:
• the binder bonds the plurality of glass fibers and plurality of synthetic fibers of the first layer together, bonds the plurality of synthetic fibers and plurality of glass fibers of the second layer together, and bonds the first layer and the second layer together, and
• an interface between the first layer and the second layer comprises intertwined glass fibers from the plurality of glass fibers and synthetic fibers from the plurality of synthetic fibers,
• a percentage by weight of the glass fibers in the first layer is between 70and 99 percent and a percentage by weight of the synthetic fibers in the first layer is between 1 and 30 percent,
• a percentage by weight of the synthetic fibers in the second layer is between 80 and 99 percent;
• a porosity of the first layer is greater than a porosity of the second layer,
• the plurality of glass fibers comprise coarse glass fibers having an average fiber diameter between about 8 and 25 um,
• the plurality of glass fibers comprise glass microfibers having an average fiber diameter between about 0.5 and 6 um, and
• the plurality of synthetic fibers comprise a first type of synthetic fibers having an average denier of between 0.3 and 1 denier and a second type of synthetic fibers having an average denier of between 1.5 and 8 denier.