Covering 1500 sq ft per roll this 6 x 250 ft woven landscape fabric weighs 4.1 oz per square yard and blocks weeds across driveways flowerbeds walkways and garden rows. The tight woven polypropylene construction stops aggressive weeds from pushing through yet lets water air and nutrients reach the soil below to keep planting areas healthy. A 20 year service rating reflects the rollers Uv stabilization which resists fading and cracking under direct sun exposure.