Can you use 4 mil plastic for vapor barrier. 001 inch and most codes call for 6 mil, which is 0. com Jul 25, 2025 · If you require something more durable for general-purpose use, a 4-mil vapour barrier is a good option. See full list on attainablehome. The industry standard for most residential and commercial projects is a 6-mil vapour barrier, which balances strength and flexibility. Nov 4, 2024 · To create a reliable vapor barrier for your home insulation, you should use polyethylene plastic sheeting, ideally 6 mil thick or more. It is measured by mils, which are the thickness of the poly. Mar 26, 2025 · Though going with a thicker vapor barrier generally comes at a higher cost upfront, it'll also offer greater long-term value and durability. Each mil is 0. . 006 inches thick. Learn how different mil sizes affect durability and effectiveness, and find the best option for your specific needs. Apr 8, 2021 · Thicknesses Can Vary The most common vapor barrier material is polyethylene (poly). However, you should not use a poly vapor barrier in your basement. Discover the ideal mil thickness for plastic vapor barriers to ensure optimal moisture protection in your construction projects. This thickness helps prevent tears and effectively resists moisture. Sep 18, 2023 · Cheaper isn’t always better – in fact, using low-grade mil plastic for vapor barrier can lead to more costs down the line due to damage and repairs. Don’t fall for cheap materials; instead, use high-quality vapor barriers such as Crawlspace Makeover. ppp uoav iqwdt neet rcgofx cbn ymsm ddgvklv ugmkbe byp