Ordered this 2.4 oz weed barrier then a (I think) a 3.5 oz roll. I was ignorant of how to install barrier. First, find landscape fabric staples to secure fabric to soil. Four inch worked best in rocky ground, six inch for sandier soils. You do not cut holes. They fray in the wind. Get a cheap butane torch from tobacco shop and easily burn holes. This will prevent fraying and make a neater hole for plants to grow. If you don't secure fabric this way (rocks did not work as well) it will shrink in sun and holes will move from plant. If this happens, carefully burn a wider hole to accommodate plant. It's not difficult...just different. Soil stays moist for a longer time and no weeds in row middles. Both 2.4 and 3.5 oz have their advantages. Thin will absorb water faster and thick will pull taut and look better but water stands on 3.5 oz longer. None of these traits are deal breakers. Advantages outweigh disadvantages.