The larger the mil number the thicker the plastic sheeting. 25 mil is thicker than 20 mil for example. If you know the thickness required for your project, the higher the mil thickness number, the thicker the plastic sheeting. Visit our mil thickness chart if you aren't sure which thickness works best for various applications.
"Strong" is a bit fuzzy because some thinner mil plastics that are string reinforced are "stronger" than the same thickness without the reinforcement.
The term "heavy duty" is somewhat of a subjective adjective implying the need for a stronger than normal roll of plastic for the job. The cell structure, ingredients and configuration of the plastic all contribute to what makes a "heavy duty" plastic liner, tarp or roll of plastic. If you are using the plastic in a crawl space, a liner that has certified test results for its performance will assure you the liner will perform accordingly.
Thick Plastic Sheeting-Visit this page to select from a variety of mil thickness rolls, liners, tarp, etc
Strong Plastic Sheeting- Consider using a string reinforced plastic if it's a windy environment. If you are covering a greenhouse, the strongest plastic sheeting we sell for the greenhouse is SolaWrap which gets its strength from the bubbles and the way it is applied to the greenhouse.
Heavy Duty liners - HDPE Liners- For containments, tan liners, XR-5- extra heavy duty liner
Not sure what roll of plastic will best work for your application? Give us a call and we will help you.
Global Plastic Sheeting, Inc.
Mailing Address: P.O. Box 8313 Chula Vista, CA 91912 866.597.9298 Warehouse & Sales Office: 1781 Key Lane, El Cajon, CA 92021 © 2008-2022 www.globalplasticsheeting.com. CEO Lee Hinsley