Definition of Terms You'll Come Across In The Artificial Grass World
If you’ve been shopping around for artificial grass, you’ve probably come across some terms you’re unfamiliar with. To help out, we’ve put together a list of words and phrases that we get a lot of questions about. And of course, please give us a call if we can be of any other additional help! (512) 670-7990
Pile height – Pile height is the height of the tall, uncurled fiber in the grass.
Gauge – The gauge is the distance between stitch rows. The measurements are typically 3/8″, 1/2″, or 5/8″ for landscaping grasses, and are typically tighter for putting greens (3/16″ or 5/32″) and wider for traditional sports grasses (up to 3/4″) Stitch Rate – This is the number of stitches in a fixed distance – typically a stitch every 10cm or 3″. As an example, 15 stitches per 10 cm would be quoted as a 15/10 stitch rate.
Face weight – The weight of the yarn used in an artificial grass product is typically quoted in terms of ounces per square yard. Face weight is a function of the density (i.e. number of stitches per sq. yard), the pile height, and of the decitex (DTEX) of the yarn (i.e. the thickness and width of the individual fiber). If you increase the pile height you increase the face weight; if you increase the stitch rate you increase the face weight; if you reduce the gauge you increase the stitch rate; if you use a thicker, heavier fiber you increase the face weight.
Total weight – The total weight is the sum of the face weight, the weight of the primary backing, and the weight of the secondary backing. For all ToughLawn products that have a latex backing, the total weight is the face weight + 40 oz. per sq. yard (8 oz. for the primary backing and 32 oz. for the secondary backing); for all ToughLawn products that have a polyurethane backing the total weight is the face weight + 32 oz. per sq. yard (6 oz. for the primary backing and 26 oz. for the secondary backing).
Square Foot – This measurement indicates the area of an object or space. Because artificial grass is sold by the square foot and is typically cut as a rectangle, this measurement is calculated as the length times the width. A piece of artificial grass that is 20′ long by 15′ wide is 300 square ft.
Square Yard – This measurement indicates the size of an area in terms of yards (1 yard = 3 feet). A square yard is equal to 9 sq. ft. (3′ x 3′ = 9 sq. ft.). You can determine the number of square yards by calculating the number of sq. ft. and dividing by 9.
Artificial Grass Backing – The artificial grass backing consists of two components – the primary backing and the secondary backing. When comparing artificial grass backings people often only focus on the secondary back or the “glue” but in fact both components are critical to the life of an artificial grass product.
Primary Backing – This is the fabric that the artificial grass is tufted through – similar to multiple layers of a commercial grade weed barrier. The quality and durability of a primary backing determines the dimensional stability of an artificial grass product (i.e. how much it expands and contracts.) ToughLawn grasses typically have an industry best triple layer backing (8 oz. per sq. yard).
Secondary Backing – This is the glue that secures or adheres the artificial grass fibers or yarn to the primary backing. The quality and durability of the secondary backing determines the tuft bind of an artificial grass product. The tuft bind is a measurement of how hard it is to pull the fibers out. ToughLawn grasses use 32 oz. per sq. yard of latex on our grasses that have a latex backing, and 26 oz. per sq. yard of polyurethane (PU) on our grasses that have a PU backing.
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