Grandeur Flooring Essential Tile Hearthstone is a high performance Vinyl Tile product made with Dryback - Glue Down construction. It features a total thickness of 3mm and a durable 20mil wear layer, offering long lasting protection. Each plank measures 24" x 24", making it easy to install.. FloorScore approved for healthy, resilient interiors. Category: Vinyl. Brand: Grandeur Flooring. SKU: Grandeurvinyl61.