Metrostone Solid Polymer Composite (SPC) LVT floors represent the latest technology in multi-layer, rigid core, waterproof flooring. Metrostone features an extremely dense waterproof core that is highly resistant to indentation. FX2 Surface Protectant provides superior stain repellency and abrasion resistance. The attached HDPE underlayment provides comfort underfoot, reduces transmitted sound, and helps conceal minor subfloor imperfections.