20 mil vapor barrier

Crawl Space Vapor Barrier - 10 mil (10' x 25'), Thick Plastic sheeting, Drop Cloth Moisture Barrier Covering for Crawl Space Encapsulation, Blackout Plastic Painters Tarp, Black and White Panda Film . Visit the Crawldryer Store. 4.9 out of 5 stars 24. $45.99 with 8 percent savings -8% $ 45. 99.

VAPORBLOCK® vapor barriers are available online in 10 mil and 15 mil. VAPORBLOCK® 10 and 15 mil are not radon barriers. 10 Mil VAPORBLOCK® is stocked in roll sizes of 14′ x 210′, and 15 mil VAPORBLOCK® is stocked in 14′ x 140′ rolls. If you require a radon barrier, we recommend the 20 mil VAPORBLOCK® PLUS vapor …The YCS 20 mil is a pre-rolled, 100% reinforced ground vapor barrier, not 10% reinforced like most liners. This product will not grow mold, and designed for the toughest of …Dura Smooth - 20mil - Heavy Duty Black/White Polyethylene Plastic Sheeting. This extremely durable 20 mil construction sheeting is ultra white on one side and total blackout on the other, and unrolls as a single sheet with no seams. It can be used for pond liners, hydroponics, vapor barriers, crawl space liners, and much more.We're here to help. 1-877-464-7834. Protect your home with below-slab and crawl space vapor barrier solutions. Our products are tailored to residential projects and offer unrivaled support.Reduces moisture & humidity in crawl space. Helps seal out cold drafts in winter. Suitable for installation over walls and floors. Super durable: 20mil thick, 7-layer polyethylene composition, with polyester cord …Why is there such an alarming imbalance in the male-to-female ratio? HowStuffWorks looks at the role climate change plays. Advertisement Australia's 1,200-mile (2,000 kilometer) Gr...Membrane Estimator. Calculate all your membrane requirements for your project. Schluter®-KERDI-DS is a bonded waterproof membrane and vapor retarder with very low water vapor permeance for use in continuous use steam rooms and similar applications. KERDI-DS has been evaluated according to the “Standard Method for the Testing and Evaluation ...

The Rome city council just approved a motion to build a barrier around the Trevi Fountain to prevent tourists from damaging the monument. Rome’s Trevi Fountain might be famous for ...Stego Wrap Vapor Barrier is made with our proven trade secret blend of prime virgin resins and additives. Stego Wrap 15-MIL Vapor Barrier is an ASTM E1745 Class A Vapor Barrier (Below 0.01 perms). We focus on producing a product that will maintain its extremely low permeance. The protection of Stego Wrap Vapor Barrier provides the flexibility ... Our 20mil Film is an used primarily as an Crawl Space Vapor Barrier and as a weed barrier for landscapers. SPECIFICATIONS: Roll Dimensions @ 20mil White – 20′ x 100′. Roll Weight @ 200lbs. Use with our 4″ Heavy Duty White seaming Tape. Bulk-12: Required 24 ROLLS ( 2 PALLETS ) 12 ROLLS ( 1 PALLET ) 8-11 ROLLS 6-7 ROLLS 4-6 ROLLS 1-3 ROLLS. Quantity: Add to Wish List. Select all. Add selected to cart. Description. 20' X 100' 15 mil Clear 143.8 WEIGHT 9 ROLLS/PALLET. BUY AND BULK SAVE. ****THIS ROLL MUST BE SHIPPED BY TRUCK FREIGHT CARRIER***.Premium vapor barrier. Thickness: 10 mil. Color: yellow. Dimensions: 14 ft. x 210 ft. 2,940 sq. ft. of coverage. Exceeds industry-standard ASTM E 1745 Class A, Class B and Class C specifications. Developed for use as a durable vapor retarder. Commercial or residential use. Return Policy.

Heavy Duty Vapor Barrier 20 mil - Heavy duty durable plastic sheeting engineered from low-density polyolefin. Ships blue or green depending on supply. Our rolls of plastic sheeting are strong and durable - they will not tear or rip easily. Primary application is as a vapor barrier underneath concrete. The dimensions of this product …Husky ® Yellow Guard ® vapor barriers are manufactured by Poly-America, an industry leader in the manufacture of polyethylene films. Poly-America utilizes state-of-the-art processing equipment. 800-527-3322, Ext. 7610. EMAIL US. Husky® Yellow Guard® vapor barriers: polyethylene waterproofing membranes in contact with soil under concrete ... This tri-layer film has a thick white film on one side and a black film on the opposite side. Great for heavy duty applications. Water and Vapor Barrier. Thickest Polyethylene Film on the market. 1 Piece Construction with Zero Seams. Bright White Skins on one side provide high reflectivity Black Skin on the other side. Description. Reviews. Concrete Vapor Barrier 20 Mil Thickness for Concrete Installations, Crawl Spaces, & More. Our Concrete Vapor Barrier is a 20 mil thick heavy-duty …Groundworks uses CrawlSeal ™, a 20-mil thick vapor barrier that prevents water from the surrounding earth from getting into your crawl space. Equipping your crawl space with a vapor barrier is vital to keeping your home healthy. Frequent rainfall keeps the earth rich in water, and eventually, this water rises to the surface and evaporates.20 Mil Dura Skrim® white reinforced plastic sheeting is a high-strength polyethylene film that is extremely resistant to damage, making it ideal as a liner or cover for various construction and agricultural applications. 20 Mil Dura Skrim® white reinforced plastic sheeting is a certified vapor retarder and is preferred by contractors.

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The puncture and tear strength greatly outmatches even our current 12 Mil SilverBack® SR (String Reinforced) vapor barrier product line. ... 20 Mil SilverBack® HS (High Strength) Vapor Barrier. Price: $148.28 View. Quick View. Featured! Spotlight! Moisture Medic® Dehumidifier- 70, 90 & 130 Pint.Viper II below-slab vapor barrier is the first line of defense against damaging water vapor and soil gas threats existing below the concrete slab. Viper II products are multi-layer (co-extruded), virgin polyolefin under-slab vapor barriers/retarders. ... Thickness 20 mil: Size: Weight 142 lb: Volume: Quantity per packaging: Container: Granules ...Jackie Robinson is rightfully lauded for breaking Major League Baseball's color barrier in 1947. But there were many unsung players who paved the way. Advertisement For baseball fa...Catherine asks, “Every time we have damp weather our concrete floor in the garage gets so much moisture on it that it's dangerous to walk on. What causes this, and what can we do a...

Reduces moisture & humidity in crawl space. Helps seal out cold drafts in winter. Suitable for installation over walls and floors. Super durable: 20mil thick, 7-layer polyethylene composition, with polyester cord …The 12 mil GuardianLiner™ is a vapor barrier designed to match the Cleanspace® brand head to head. Although lengths and widths are different, the barrier’s thickness and construction match the performance of the Cleanspace®. Additionally, the 12 Mil GuardianLiner™ has an antimicrobial additive. ... 20 mil; Diamondback™ ...The Importance of Crawl Space Vapor Barriers; Seeking Professional Guidance; Selecting the Right Thickness: Comparing 6 Mil, 12 Mil, and 20 Mil Liners. Understanding Mil Thickness in Vapor Barriers; Deciding Factors: Conditions and Usage; Comparing Thickness to Different Sweater Types; Thicker is Smarter: Why Invest in a …Although there are no guarantees of safety during a tornado, you can take actions to protect yourself. Read about what you can do. Tornadoes are nature's most violent storms. They ... Most building codes mandate a 6-mil crawl space vapor barrier, but this is the absolute minimum, and it isn’t very effective. Many companies offer a 12-mil crawl space vapor barrier, but even at this thickness, you can still end up with many problems. We use a 20-mil crawl space vapor barrier to make sure your crawl space stays as dry as ... Jan 5, 2022 ... We used 10mil vapor barrier, vapor barrier seam tape, and Zip System flashing tape for this installation. This is a definite 2-person job. VaporBlock® Plus™ is a seven-layer co-extruded barrier made using high quality virgin-grade polyethylene and EVOH resins to provide unmatched impact strength as well as superior resistance to gas and moisture transmission. VaporBlock® Plus™ 20 is more than 100 times less permeable than typical high-performance polyethylene vapor retarders ... 20 Mil Vapor Barrier, GuardianLiner™. 4 Review (s) Write a Review. Price: $495.00. 20 Mil Vapor Barrier for Crawl Space Encapsulation, GuardianLiner™. Part Number: 20MGL-75. Availability: Back Order. Features: American Made. 20 Mil thickness (nominal) 85 MSF. 100% Virgin Resin. White Face Cream colored back. Anti-Microbial. Send to: Add to Cart.

20 mil GuardianLiner™ is an American Made 20 mil crawl space vapor barrier with added anti-microbial for additional peace of mind in suppressing mold and mildew growth. 13'4"x75', 1000 Sq Ft per roll. This product is subject to a UPS large package handling fee of $9.28 for the first roll of each vapor barrier kind/size.

Poly Scrim 20 mil White Reinforced Vapor Barrier For Crawl Spaces . Reinforced Crawl Space Vapor Barrier/Retarder Poly Scrim 20 mil- White. Material: 3-ply laminate, combining 2 layers of linear low density polyethylene and 1 high strength non-woven cord grids. Weight: ASTM D 3776: 93 lb/1,000 ft2 (45 kg/100 m2 Soil gases and moisture intrusion are major concerns regarding building health and energy efficiency. StegoCrawl Wrap 15-Mil Vapor Barrier has extraordinarily low permeance, below 0.010 perms. It is very durable too, boasting 203.8 newtons of push-through resistance. With input from crawl space contractors regarding dimensions and roll sizes ...SilverBack®. SilverBack® is an actual thickness vapor barrier for crawl space moisture control. Lab Results Example ASK our staff for a copy of your vapor barriers lab results! Detail. SKU: 20MSB-HS93. Category: Vapor Barriers 20 Mil. Tags: High Strength SilverBack® 20 Mil. Description. Specification.StegoHome 15-Mil Vapor Barrier is a high-performance plastic sheet membrane designed for below-slab applications to prevent the natural transmission of moisture vapor and soil-gas into a home’s foundation. It is a multi-layered, engineered polyolefin film that uses only high-grade raw materials to provide unmatched vapor protection ...Crawl Space Vapor Barrier - 10 mil (10' x 25'), Thick Plastic sheeting, Drop Cloth Moisture Barrier Covering for Crawl Space Encapsulation, Blackout Plastic Painters Tarp, Black and White Panda Film . Visit the Crawldryer Store. 4.9 out of 5 stars 24. $45.99 with 8 percent savings -8% $ 45. 99.The tear resistant, waterproof material will keep any unwanted vapor at bay. 10mil Thickness. String Reinforced - Superior Strength and Toughness. UV Stabilized. Meets or exceeds ASTM E-84 standard, Class “A” for surface burning characteristics of building materials. Dura Skrim is the first choice for any application where common 10 mil ...Stego Wrap 15 Mil Vapor Barrier is a great way to protect your home from moisture, mold, and mildew. It is an essential part of any home insulation system and can help reduce energ...20 Mil Vapor Barrier, GuardianLiner™. 4 Review (s) Write a Review. Price: $495.00. 20 Mil Vapor Barrier for Crawl Space Encapsulation, GuardianLiner™. Part Number: …

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20 Mil Dura Skrim® white reinforced plastic sheeting is a high-strength polyethylene film that is extremely resistant to damage, making it ideal as a liner or cover for various construction and agricultural applications. 20 Mil Dura Skrim® white reinforced plastic sheeting is a certified vapor retarder and is preferred by contractors. 20 Mil Reinforced Vapor Barrier for Crawl Space Encapsulation® The 20 Mil SilverBack® is made from 100% virgin polyethylene resin and reinforced with a 1000 denier polyester cord. This crawl space vapor barrier is idea for use on the crawl space floor because it is an actual 20 mil. We say it is an actual 20 mil because it is measured at the ...Designed to provide superior resistance to gas and moisture transmission, PERMINATOR EVOH is a highly resilient underslab gas/vapor barrier (20 Mil) designed to restrict … Most building codes mandate a 6-mil crawl space vapor barrier, but this is the absolute minimum, and it isn’t very effective. Many companies offer a 12-mil crawl space vapor barrier, but even at this thickness, you can still end up with many problems. We use a 20-mil crawl space vapor barrier to make sure your crawl space stays as dry as ... 20 Mil Dura Skrim® white reinforced plastic sheeting is a high-strength polyethylene film that is extremely resistant to damage, making it ideal as a liner or cover for various construction and agricultural applications. 20 Mil Dura Skrim® white reinforced plastic sheeting is a certified vapor retarder and is preferred by contractors.20 ft. x 100 ft. Woven Reinforced String Plastic Sheeting Great for Vapor Barrier, Crawl Space Under Floor. 68. (8) Questions & Answers (15) …Forget CEO pay—CEO severance packages are way more scandalous. By clicking "TRY IT", I agree to receive newsletters and promotions from Money and its partners. I agree to Money's T...Our 20mil Film is an used primarily as an Crawl Space Vapor Barrier and as a weed barrier for landscapers. SPECIFICATIONS: Roll Dimensions @ 20mil White – 20′ x 100′. Roll Weight @ 200lbs. Use with our 4″ Heavy Duty White seaming Tape. The puncture and tear strength greatly outmatch even our current 20 Mil SilverBack® SR (Cord Reinforced) vapor barrier product line. This vapor barrier is completely SEAMLESS. There are no welds or panels. The SilverBack® HS is a smooth one piece product. This product is subject to a UPS large package handling fee of $9.28 for the first roll ... HUSKY Plastic Sheeting can be used as a vapor and moisture barrier for concrete, to cover equipment and as a paint drop cloth for floors. This heavy-duty sheeting can cover up to 2,000 square feet. Can ... 20 ft. x 100 ft. White 6 mil …Groundworks uses CrawlSeal ™, a 20-mil thick vapor barrier that prevents water from the surrounding earth from getting into your crawl space. Equipping your crawl space with a vapor barrier is vital to keeping your home healthy. Frequent rainfall keeps the earth rich in water, and eventually, this water rises to the surface and evaporates. ….

Support our channel if you find our content valuable https://square.link/u/VyzJUjCI In this video you'll learn how to install a proper poly moisture vapor ba...USES: Stego Wrap 20-Mil Vapor Barrier is used as a below-slab vapor barrier. COMPOSITION: Stego Wrap 20-Mil Vapor Barrier is a multi-layer plastic extrusion manufactured with only the highest grade of prime, virgin, polyolefin resins. ENVIRONMENTAL FACTORS: Stego Wrap 20-Mil Vapor Barrier can be used in …Stego Wrap Vapor Barrier – it comes in various thicknesses: 10 mils (0.25 mm), 15 mils (0.38 mm), and 20 mils (0.5 mm). The barrier has Class I and II (A and C) variants. The permeance is as low as 0.0086 perms for a Stego wrap. Stego has several barriers made specifically for crawl space encapsulation.20 Mil Reinforced Vapor Barrier for Crawl Space Encapsulation®. The 20 Mil SilverBack® is made from 100% virgin polyethylene resin and reinforced with a 1000 denier polyester cord. This crawl space vapor barrier is idea for use on the crawl space floor because it is an actual 20 mil. VaporBlock® Plus™ 20 Mil Vapor Retarder/Gas Barrier is a seven-layer, co-extruded vapor barrier made from state-of-the-art polyethylene and EVOH resins to provide unmatched impact strength and superior resistance to gas and moisture transmission. Nov 9, 2020 ... An encapsulation system is another excellent way to prevent standing water. This acts as a vapor barrier that will keep the crawl space separate ...This 20 mil White film is an aesthetically clean membrane with a diamond reinforced pattern to resist tearing. Excellent for construction sites, tough agriculture jobs, aquaponics and more. This 20 mil string reinforced polyethylene construction film is heavy duty and versatile for many uses, including crawlspaces as a vapor barrier or a vapor ...We're here to help. 1-949-257-4100. Drago Wrap is specifically engineered to serve as a barrier to volatile organic compounds (VOCs). This 3-in-1 high performing solution helps transform brownfield sites into healthy built environments.2000 W. Marshall Dr. • Grand Prairie, TX 75051 800-527-3322 • 972-337-7610 • Fax 972-337-7016 • www.yellowguard.com • [email protected]. The information provided herein has been compiled by Poly-America, L.P. and to the best of our knowledge accurately represents Poly-America’s Yellow Guard® vapor barriers at the time of ...STEGOHOME® 15-MIL VAPOR BARRIER. StegoHome 15-Mil Vapor Barrier is designed to withstand the harshest conditions during the construction process, is highly resistant to punctures from heavy traffic and maintains a low permeance rating … 20 mil vapor barrier, Geo-Seal® EV40s is a significant improvement over existing single sheet membranes. Geo-Seal® EV40s consists of an EVOH membrane combined with a robust geotextile layer to provide a single sheet vapor intrusion barrier that is chemically resistant and easy to install while also providing improved protection during the installation process., 20 Mil Reinforced Vapor Barrier for Crawl Space Encapsulation®. The 20 Mil SilverBack® is made from 100% virgin polyethylene resin and reinforced with a 1000 denier polyester cord. This crawl space vapor barrier is idea for use on the crawl space floor because it is an actual 20 mil., Crawlspace 2000 offers: A multi-ply laminate containing a high strength cord grid for stability- In other words, it's reinforced and 20 mils thick. Made from 100% Virgin Polyethylene resins (a very high quality polyethylene) Weight: 93 LB/1000 SQ FT. Temperature range: Minimum: -40° F, Maximum: 170° F. Click for., PERMINATOR EVOH is available in 20 mil thickness and furnished in 150′ (45.7 m) long rolls. PERMINATOR HP 15 Mil Underslab Vapor Barrier (High Puncture Resistance): PERMINATOR HP underslab vapor barrier is a new generation of polyolefin-based resin/chemical technology. PERMINATOR HP provides the vapor barrier industry with a highly effective ... , Vapor barriers can help control moisture in everything from basements and crawl spaces to ceilings and walls. The best moisture control must also have air-sealing gaps. ... High-performance vapor retarders and barriers are commonly available in 8-mil, 10-mil, 15-mil, and 20-mil thicknesses, but increased thickness does not always …, 20 Mil Dura-Skrim® white reinforced plastic sheeting is a heavy duty construction and agricultural film designed for both indoor and outdoor applications requiring an exceedingly strong material. ... A 6 mil vapor barrier is the minimum thickness recommended for encapsulation, but we advise you to take into consideration the following ..., Heavy Duty Vapor Barrier 20 mil - Heavy duty durable plastic sheeting engineered from low-density polyolefin. Ships blue or green depending on supply. Our rolls of plastic sheeting are strong and durable - they will not tear or rip easily. Primary application is as a vapor barrier underneath concrete. The dimensions of this product are 12' x 105'., Stego Wrap 20 Mil - 14' x 105'. $1,082.75. FREE SHIPPING. Estimated Delivery Date May 6 - May 9. SKU SW20-14-I. Stego's cutting-edge 20-Mil Vapor Barrier is developed from the same proprietary blend of prime virgin resins and additives as our popular 15-mil barrier, and provides additional protection for crucial projects., Why Our Crawl Space Vapor Barrier is the Best Choice for Your Home . The CrawlSeal™ system from JES Foundation Repair excels with these features: Exceptional 20-mil thickness ; Antimicrobial characteristics ; Resistance to mold, mildew, and punctures ; Custom sizing for diverse surface adaptations ; Reflective white finish for a brighter space, STEGOHOME® 15-MIL VAPOR BARRIER. StegoHome 15-Mil Vapor Barrier is designed to withstand the harshest conditions during the construction process, is highly resistant to punctures from heavy traffic and maintains a low permeance rating of less than 0.01. Details. , SKU#: 4322014105Y. MFG#: CFYG2014105Y. $585.69 / EACH. Add to List. Share. Select your local branch for best pricing and delivery options. Orders ship in 1-3 business days. …, Stego StegoWrap 14 ft. x 105 ft. 20 Mil Class A Vapor Barrier. SKU#: 278SW1000A. MFG#: SW1000A. $855.69 / ROLL. Add to List. Share. Select your local branch for best pricing and delivery options. Orders ship in 1-3 business days. , Catherine asks, “Every time we have damp weather our concrete floor in the garage gets so much moisture on it that it's dangerous to walk on. What causes this, and what can we do a..., Product Description. This Reinforced Polyethylene liner is generally used as a vapor barrier to cover all of the ground in the crawl space. All edges are sealed to the wall liner with tape, and also sealed to the wall liner at all piers. We now have five different liner thicknesses available in various colors and configurations: 6, 8, 10, 12 ..., Product Code: vbs-20m-ws. Availability: In Stock. 20 mil Vapor Barrier. It is the best choice for applications that demand high puncture and tear strength., An ambitious new national broadband plan is aiming to deliver download speeds of at least 25 Mbps in urban areas and coverage across 90% of the population by 2025. It takes an aver..., The puncture and tear resistance are unmatched in today’s crawl space market. Your crawl space customers will be very satisfied with the performance, quality, and appearance this crawl space vapor barrier offers. The 20 mil SilverBack™ HS vapor barrier is an actual thickness product and has a 12 mil product match., STEGOHOME® 15-MIL VAPOR BARRIER. StegoHome 15-Mil Vapor Barrier is designed to withstand the harshest conditions during the construction process, is highly resistant to punctures from heavy traffic and maintains a low permeance rating …, Silverback™ SR (String Reinforced) vapor barrier is made from 100% virgin polyethylene resins and is reinforced with a 1000 denier polyester cord. This vapor barrier is 30% thicker than the competitors’ 20 mil products and is the most common choice for crawlspace floors. For more information please visit www.silverbackvaporbarrier.com , Crawlspace 2000 offers: A multi-ply laminate containing a high strength cord grid for stability- In other words, it's reinforced and 20 mils thick. Made from 100% Virgin Polyethylene resins (a very high quality polyethylene) Weight: 93 LB/1000 SQ FT. Temperature range: Minimum: -40° F, Maximum: 170° F. Click for., Premium vapor barrier. 15 mil thickness. Color: yellow. Dimensions: 14 ft. x 140 ft. Exceeds industry-standard ASTM E 1745 class A, class B and class C specifications. Developed for use as a durable vapor retarder. Get the right coverage - click here for Home Depot's buying guide. Return Policy., Membrane Estimator. Calculate all your membrane requirements for your project. Schluter®-KERDI-DS is a bonded waterproof membrane and vapor retarder with very low water vapor permeance for use in continuous use steam rooms and similar applications. KERDI-DS has been evaluated according to the “Standard Method for the Testing and Evaluation ... , 20 Mil Dura Skrim® white reinforced plastic sheeting is a high-strength polyethylene film that is extremely resistant to damage, making it ideal as a liner or cover for various construction and agricultural applications. 20 Mil Dura Skrim® white reinforced plastic sheeting is a certified vapor retarder and is preferred by contractors. , Read this article to find out how, when, and where to use a vapor barrier when installing insulation in your attic. Expert Advice On Improving Your Home Videos Latest View All Guid..., Apr 3, 2016 ... How did this project turn out? WATCH HERE: https://www.youtube.com/watch?v=3TRLd2HYhbU&list=PLO47JMsdYGrkxM_ZkOc3lMnsVhTqj80bB Learn the ..., Mar 15, 2016 ... Without a doubt this guy is the most knowledgeable and explains things out perfectly, than anyone else you will ever see!! . 20:20., Vapor barriers are measured in mils referencing their thickness. For vapor barriers in walls, most specifications and building codes will call for 6 mil vapor barrier. However, the thickness of the vapor barrier can range from 3 mils to 20 mils, each with its preferred uses. For comparison, the typical plastic grocery bag is 1/2 mil thickness., For the first time in history, all four Walt Disney World parks have female vice presidents. Learn how they got here and their hopes for the future. Disney has a lot to celebrate r..., When it comes to protecting your home from moisture, Stego Wrap 15 Mil Vapor Barrier is one of the best products on the market. This vapor barrier is designed to keep moisture out ..., Stego Wrap 15 Mil Vapor Barrier 14 ft. x 140 ft. SKU#: 278SW1001. MFG#: SW1001A20PLT. $655.89 / ROLL. Add to List. Share. Select your local branch for best pricing and delivery options. Orders ship in 1-3 business days., HUSKY ® YELLOW GUARD ® VAPOR BARRIER/RETARDER HIGHLIGHTS. 100% virgin polyolefin resins. Exceeds industry-standard ASTM E 1745 Class A, Class B, and Class C specifications. Husky® Yellow Guard® Vapor Barriers were developed for use as a durable vapor barrier & have exceptionally low water vapor permeance. 10, 15 & 20 mil., Although there are no guarantees of safety during a tornado, you can take actions to protect yourself. Read about what you can do. Tornadoes are nature's most violent storms. They ..., 20 mil vapor barriers are used under concrete slabs or in buildings to stop moisture migration and reduce mold, mildew, and fungus. Vapor barriers should exceed ASTM 1745, Class A, B, and C standards. The American Concrete Institute (ACI) recommends a minimum of 10-mil polyethylene or thicker for vapor retarders under concrete.