Artificial turf face weight: what the ounces count, and when more yarn helps

01What is face weight, and how is it different from total weight?

Face weight is the yarn: the blades and thatch standing above the backing, weighed in ounces per square yard. The Synthetic Turf Council’s landscape buying guidelines call it “total yarn weight” and define it as the weight of the yarn above the backing (STC). Total weight adds everything below the yarn: the primary backing the tufts are stitched through, and the coating that locks them in place.

Sheets use more than one name for the yarn figure. Face weight is the usual one; ForeverLawn’s K9Grass sheets say pile weight, and Firestone’s code says “pile face weight.”

The test most sheets cite is ASTM D5848. It weighs a sample’s total mass per unit area and its pile yarn mass per unit area by separate techniques, and ASTM notes that “both appearance and performance may be affected” by changes in those weights (ASTM D5848). A sheet that names the method beside each weight tells you which figure you are reading.

One published sheet shows how the pieces add up. SYNLawn’s SYNAugustine 847 lists each of these by ASTM D5848 (SYNLawn):

• Face weight: 80 ounces per square yard.
• Primary backing: 6 ounces.
• Secondary coating: 22 ounces.
• Total fabric weight: 108 ounces.

A metric sheet gives grams per square meter. Divide by about 33.9 to get ounces per square yard; 70 ounces is about 2,373 grams, using the unit factors in NIST Handbook 44.

02Why can the number in a turf’s name mislead you?

Because it may be the total weight. MSI’s Evergrass line puts a number in each product name, and on every product below, that number matches the total weight on MSI’s own listing, not the face weight (MSI Evergrass):

MSI spells out the gap itself: Viridian Turf 91 has 65 ounces of face weight, and 26 ounces of backing make up the rest of the 91 (MSI). The face weight is on the listing, so nothing is hidden. But three of the seven products above carry less than 70 ounces of yarn while their names read 76 or 91, so anyone checking a name against a 70-ounce face-weight rule would pass the wrong product. Read the face weight line, never the name. Comparing a store roll with an installer’s product raises the same question; see Home Depot vs installer turf.

03How do pile height and density change what the ounces mean?

Face weight grows with blade length as well as with how tightly the tufts are packed. The STC says it depends on the pile height and on the distance between tufts, which it calls density or tufting gauge. Most landscape turf, it says, has a 1 1/2 to 2 inch pile and a 1/4 to 1/2 inch gauge, which works out to 40 to 100 ounces per square yard.

The table shows what that means in practice. Summer Gold 96 and Viridian Turf 96 carry the same 70 ounces of yarn, one on a 1.75-inch pile and one on 1.18 inches. The shorter product packs its yarn into less height, so by weight it is the denser of the two. The two 91s work the same way. A higher number on a taller turf can mean longer blades rather than more of them.

So compare face weights only between products of about the same pile height, and read the gauge line beside it: SYNAugustine 847 lists a 3/8-inch gauge. Choosing the height itself is in our pile height guide.

04Does more face weight help under snow and dogs?

Snow. The nearest NOAA stations average 51.4 inches of snow a year in Fort Collins, 47.0 at Loveland 2N outside Loveland and 34.9 at Greeley UNC in Greeley (1991–2020 normals). Motz, an infill maker, says snow can lie heavily on turf, flattening the blades and in some cases matting them (Motz). Synthetic Grass Warehouse says light matting after a melt should bounce back over time, faster with cross-brushing (SGW).

What resists matting isn’t weight on its own. The same distributor defines resilience as resisting matting and says shorter pile heights are generally much more resilient (SGW). Ounces that come from longer blades work against that; the same ounces on a shorter pile work with it. Brushing blades back up after snow is covered in fixing matted turf.

Dogs. More yarn does help with wear. Synthetic Grass Warehouse says a higher face weight generally means a sturdier material that better withstands heavy foot traffic, and MSI ties a higher face weight to greater density and durability. But turf sold for dogs is often lighter on paper, because it is short:

• ForeverLawn’s K9Grass Classic+ and K9Grass Elite list 65 and 60 ounces of pile weight on a 7/8-inch pile (Classic+, Elite).
• MSI points high-traffic and pet areas to piles of 0.79 to 1.18 inches, saying a shorter pile resists wear and gives dogs better traction.

For a dog yard, then, read face weight together with pile height, not on its own. If your dog pulls at turf, look at tuft bind, the force it takes to pull a tuft out: the STC recommends 6.8 pounds and says higher is better. Digging is covered in can dogs dig through artificial turf, and what a “pet” label changes in pet turf vs regular turf. Dog runs are on our pet turf page.

05When is a heavier face weight not worth paying for?

• When the extra weight is only length. The same yarn on a taller pile is less dense, and by the distributor’s account above, less resilient.
• When the budget is tight. Synthetic Grass Warehouse says face weight drives cost as well as durability, and ASTM describes the measurement as part of cost control in manufacturing. More yarn is more material. What else moves a quote is in artificial turf cost.
• For drainage. Water passes through the backing and the base, and a sheet gives drainage its own line: SYNAugustine 847 lists permeability over 1,000 inches an hour, apart from its face weight. The STC says permeable systems are typically designed to drain 25 inches an hour. On clay soil, what’s under the turf matters more.
• For heat. Face weight measures mass, not temperature. What makes turf hot, and what cools it, is in how hot artificial turf gets.
• Past the minimum your yard needs. The STC calls its specifications minimum guidelines and says a product below them may still suit its use. Above what the yard and any town or HOA rule require, extra ounces mostly change look and feel: Synthetic Grass Warehouse says turf over about 80 ounces is thicker and softer to the touch. More on looks is in what makes artificial turf look real.

06What does Firestone require, and what should I ask any installer?

Firestone’s code is the one we found in Northern Colorado that puts a number on it: “Pile face weight shall be at least seventy (70) ounces” (Firestone Development Code 16.6.4). A town permit comes first, with no fee for single-family homes, and Firestone takes turf permit applications through its online portal (Town of Firestone). The town’s page doesn’t list what to attach. It depends on the application, so ask Firestone Planning, and have the face weight line of the spec sheet ready. Firestone’s other product rules are in a turf spec sheet for Colorado, other towns in our turf rules guide, and HOA minimums in HOA approval for artificial turf. This is general information, not legal advice.

Anywhere in Northern Colorado, these questions sort out the ounces:

• Is that face weight or total weight? A good answer reads the face weight line from the manufacturer’s sheet, with its ASTM D5848 method, and never quotes the product name.
• At what pile height and gauge? A good answer gives both, so two samples can be compared fairly.
• What are the backing and the tuft bind? A good answer names the primary backing and coating weights and the tuft bind in pounds. The STC suggests a dual primary backing of at least 7 ounces.
• Can I keep the sample? The STC advises keeping the sample you choose and comparing it with the turf delivered.
• Why this weight for my yard? A good answer talks about your dogs, how the yard gets used and any town or HOA minimum, not “heavier is better.”

How a whole install fits together is on our artificial turf installation page.