Prep Step #2 - Subbase Preparation: The concrete floor slab needs an appropriate subbase to be placed upon. Nylon - Suitable for oxygen barrier formulations. It is resistant to mold and mildew, but it doesn’t provide a complete waterproof barrier in damp environments. ft. View Specifications. 3-in-1 Vapor Underlayment. Once installed, tile can be applied directly on top. underlayment for laminate flooring. Another appealing aspect was the versatility of SENTINEL® P150, which allowed coverage for the vertical walls throughout the roofing system. Polyethylene Vapor Barrier Underlayment for Hardwood Laminate Floors. The product can also be used to encapsulate crawl space floors and. SENTINEL P150 HFB is a high-performance, fleece-backed, thermoplastic polyvinyl chloride (PVC) membrane designed for both steep and low slope applications. Assuming all other aspects of moisture con-trol are handled correctly, the main influence on the location of the vapor barrier is climate. x 25. It rolls out and lies flat, with self-sealing seams making it simple to connect and form a continuous 6 mm vapor barrier between wood or laminate planks and a subfloor. Contact us. Air & Vapor Barrier Laminated Boards; Air & Vapor Barriers. Viper VaporCheck II (Viper II) is the first line of defense against damaging water vapor and soil gas threats existing below the concrete slab. climates, vapor barriers, or -- more accurately -- vapor diffusion retarders (vapor retarders), should be part of a moisture control strategy for a home. Flooring. VaporSentinel. g. A vapour barrier is an important component in building construction. We are Sentinel Systems. Water can enter a basement or crawlspace in liquid form—through cracks in the walls, cracks in the slab, or the crack at the perimeter of the slab. Re: Vapor barrier acoustic sealant. This is where your video banner will be. 99 / piece SKU: 100654631 View Specifications Size: 200sqft Calculate my square footage Size Of Your Project: Number of pieces. Air & Vapor Barrier Laminated Boards. Next, to prevent cold air from entering the crawl space, install R30 Fiberglass insulation into the bond cavity. Accessories & Primers; Membranes. . A wall system should have one vapor barrier, but can have many air barriers. SOPREMA combines a comprehensive line of commercial roofing solutions with decades of proven performance. RUNNER-UP: QuietWalk Plus QW100PLUS Underlayment. 9 fl. 120sqft 1. SENTINEL P150 HFB is a high-performance, fleece-backed, thermoplastic polyvinyl chloride (PVC) membrane designed for both steep and low slope applications…. Some plastic sheeting vapor barriers have self-sealing edges, so you don't have to. With a pre-attached self-sealing tape strip and plastic overlap, installation is a breeze! Suitable for wood and cement subfloors. ft rolls. Most vapor barriers are sold in rolls that are 2 feet wide and a variety of lengths. Water vapor sneaks into (or out of) your home unseen. Roof insulation thermal resistance at roof perimeter should be equal or greater to thermal resistance of exterior wall. SKU: 100472307. April 15, 2011. Vapor Barrier Vapor. The HDX 20 ft. Efficient and flexible installation. Injection Materials. Griffolyn® Type-90 FR is a Class B vapor retarder. A vapor barrier is a large, plastic-like sheet that covers any area. The vinyl coated metal can be used in both. Viper Vapor Barrier Tape - White 4" X 180' 68189. A vapor barrier is strategically placed between the green board and the water. Waterproofing Preservation Polishing Epoxy Coatings Traffic Coatings Concrete Preperation Vapor Barriers Other Services. Low water vapor permeance is perfect for soil and granular fills; Thickness of the barrier restricts the migration of soil gases; Top-quality polyethylene resins exceed the industrial standards; View More Details DESCRIPTION USES: Vapor Sentinel 10-Mil Vapor Barrier is used for sub-slab installations, to protect indoor structures from soil gas transmissions, as well as moisture vapor. It allows the user to create effective methods in detailing PVC-to-metal transitions. SOPRA-TITE SENTINEL® Drip Edge. per 1000 sq. The bidding for this auction will close on Tuesday on the specified close date starting at 2:00 PM or 7:00 PM. x 50ft. For more information about this video or Fausfloor® products visit for use on wood or concrete subfloors and on any level of your home, including basements. I would like to speak with my county inspector about using this approach to make sure I don't have problems during construction. BEST BANG FOR THE BUCK: BestLaminate Blue Vapor 3-In-1 Flooring Underlayment. Water Vapor Transmission Rate (WVTR) test ASTM E 96 measures the water vapor transmission rate, or the rate at which water passes through the plastic sheeting vapor barrier. ft roll. Stego Wrap 20-Mil is manufactured with only the highest grade of prime, virgin, polyolefin resins which allows this product to greatly resist degradation. Unroll the vapor barrier and lay it over the concrete surface you wish to protect. The amount of permeability is measured in units called "perms. ft) QW100B1LT ROBERTS Black Jack Underlayment - 100 sq. •Vapor retarders are NOT vapor barriers Vapor Barriers & Retarders •Class I Vapor Retarder: < 0. The Vapor Sentinel Remote Monitoring (VSRM) system greatly simplifies this OM&M by providing 24/7/365. Wall systems from SOPREMA provide air and vapor barriers using laminated boards or self-adhered, spray-applied and roller-grade permeable or non-permeable options. Sentinel Premium Quiet Underlayment. Any. Type 2 vapor barriers, the basic vapor barrier for ordinary conditions, are defined as having a permeance less than or equal to 60 ng/(Pa·s·m 2) of moisture passage. Waterproofing Preservation Polishing Epoxy Coatings Traffic Coatings Concrete Prep Vapor Barriers Other Services. Sentinel XS Radon Vapor Barrier is available in 4’, 8’, 12’ and 20’ widths. Fluid/Liquid-Applied Air & Moisture Barriers. Sentinel Protect Plus ®, with built in vapor barrier, offers superior moisture protection, sound reduction, thermal protection, and softness underfoot to help to ensure a quality floor install over time. 00 / piece Size: 1000sqft Color: Black. View Specifications. Only 1 left in stock - order soon. VaporBlock 150 sq. These can condense on cold surfaces and get trapped between walls and cavities, which can cause rot and mold to form. 100% waterproof, mold proof and vapor-resistantBuy from trusted and established brands like Sentinel ; The most affordable underlayment items;. If that air has a high moisture content, then this can spell trouble as it will condense inside your walls at night. 200Sqft AMERIQUE 3mm thick flooring silver chrome underlayment padding with tape & vapor barrier 3-in-1 heavy duty foam (200Sf TOTAL, pack of 1, 200Sf/roll); mold and moisture protection, non allergenic, 3mm closed foam technology for sound reduction; anti-crush technology for excellent performance & long life; perfect for wood, bamboo. plastic sheeting is a general-purpose plastic film for use in a variety of construction and DIY projects. 2. PVC Membranes; PVC Accessories; PVC Adhesives; ALSAN® RS Liquid Resins. Additionally, the overlapped seams can cause some unevenness. The barrier is made of rolls of ordinary sheet plastic that are laid down on the ground in a crawl space to trap water in the ground from evaporating or condensing. The downside to using a waterproofing membrane is that it's expensive. In order to save money, I've switched my wall assembly last minute from using exterior rock wool board to a double stud wall construction. Now, measure and cut a high-quality vapor barrier to fit the crawl space and allow several inches to run along the walls. A heavy-duty material protects and shields nearly anything from moisture, dust, dirt, rain, snow, wind, chemicals and much more. Our 6-Mil plastic sheeting is a heavy-duty, multipurpose film for perfect for a wide variety of construction, gardening, and DIY applications, including being used under concrete slabs as a vapor barrier, on top of freshly poured slabs as a curing blanket, and as a temporary. 0031 inches thick, and unfaced expanded or extruded polystyrene. ft rolls. The barrier has Class I and II (A and C) variants. Name. This is an internet-only auction. 3. Primers; Field & Flashing Membrane Resins;. Conversely, if you live in a hot climate like I do here. 0086 perms for a Stego wrap. Send . Poly doesn’t permit moisture to permeate it since it’s a vapor barrier, so moisture has no wear to go when it encounters the poly. Further Reading. GREAT VALUE. , 6–15 mils) that are used to mitigate moisture transmission through concrete. Sentinel XS Radon Vapor Barrier blocks out radon and water vapor even during extreme seasonal temperature changes. 0 perm – 10. Air & Vapor Barrier Laminated Boards. As a second line of defense, the system allows for simple and easy mitigation system installation if the need arises. Vapor barriers used in standard construction practices are not typically designed to mitigate. Damage from water condensation due to water vapour. It is made from 100% recycled contents that are environmentally safe, and a baked silicone coating that provides moisture impermeability under wood flooring. Others may desire a warranty crafted to address a particular type of assembly or system. So the boards are resistant against water, moisture and humidity, SENTINEL CEMENT FOAM BOARD is an excellent alternative to traditional wall at shower, sauna, and any wet area where waterproofing and vapor barrier is absolute necessary to protect your home from mold and mildew. The water vapor control layer is also called a vapor retarder or vapor barrier. AMERIQUE AMBLPD3M 3-in-1 Heavy Duty Foam 3mm Thick Premium Flooring Underlayment Padding with Tape and Vapor Barrier, 200 Square', Royal Blue, Feet. com | 877-508-8850 . Researchers have found ways to upgrade existing vapor barrier technology, adding components such as nitrile and aluminum to create barriers with vastly. • Do-it-all underlayment provides complete moisture and vapor protection for all flooring types in floating installations. . Adding a vapor barrier to any basement is not a huge expense, especially when you factor in the long-term savings in energy over time. Plastic on the outer surface of a wall in cold weather could cause problems. SENTINEL® P200. Vapor barriers prevent moisture from moving from areas with a lot of moisture to areas with less moisture. This video describes the process of installing a moisture barrier over a concrete subfloor. All bidding is online. Size: 100sqft. We built a home with 2 X 6 stud walls, fibreglas insulation and polyiso spray foam around vents and critical areas. ASTM E283. 3M™ Venture Tape™ Cryogenic Vapor Barrier Tape 1555CW/W is an all-weather, conformable, multi-layered self-adhesive cryogenic vapor barrier tape. A step up from the 2-in-1 underlayment option is is the 3-in-1 Vapor Underlayment. Once your subfloor is inspected, repaired, and prepared, you are ready to start your installation. Roof Protection. Remote Monitoring; New Construction; Vapor Products Group. The air control layer is also called an air barrier. 99 / piece Size: 120sqft Color: Black. Air & Vapor Barriers; Accessories & Primers. Picture 1 - First Rebar Layer / Barrier Pad Form Picture 2 - Barrier Base Pad Setting Wedge Barrier After the Concrete has set – place the Sentinel wedge on the Barrier Base pad A. Sentinel XS Radon Vapor Barrier (1) Sheet Metal Protection (1) Signs of Crawl Space Issue (1) Skrim (1) Skrim- String Reinforced Polyethylene (1) Sola Wrap (1) Spill containment plan (1) Steel Banding or SolaWrap (1) Steiner Tunnel Test (1) Structural Care (1) Successful Greenhouse Venture (1) Supplemental Lighting (1) Surface. SENTINEL UNIVERSAL SEALANT is a moisture-cured, polyether, elastomeric sealant for use in approved SENTINEL PVC membrane and flashing assemblies. This inhibits the green board from soaking because of the moisture hence hindering it from possible eventual crumbling. Air & Vapor Barrier Laminated Boards. 50 to $0. 194sqft 1. Using a utility knife, cut the length long enough to wrap edges up the wall 3 - 4 inches. Contact us today for more information. Air & Vapor Barrier Laminated Boards; Air & Vapor Barriers. COMPOSITION: Made with the highest grade of prime, virgin, polyolefin resins, Vapor Sentinel 20-Mil Vapor Barrier is manufactured as a multi-layer plastic extrusion. SENTINEL® PVC Roof Systems. 100sqft 5. 300sqft 3. This sheeting can be used as a temporary cover for equipment and supplies. Unroll and trim vapor barrier sheets. SKU: 100586825. basement underlayment. ALSAN® FLASHING. We'll explore the science behind crawl space liners, assess their durability, and uncover the advantages of thicker options, particularly the 20 Mil. Clean floor and perimeter walls. oz. I looked through, and think it is the section 3. Clean floor and perimeter walls. We would like to show you a description here but the site won’t allow us. The traditional approach to preventing water vapor from penetrating walls in homes is a 6 mil polyethylene vapour barrier, or 'vapor barrier' for our southern neighbours. Accessories & Primers; Membranes. This heavy duty 60 yard roll of moisture resistant crawl space vapor barrier seam and seal tape is highly durable, waterproof and weatherproof. When rolling out the moisture barrier you want to go from wall to wall and cover the entire floor. COMPOSITION: Made with the highest grade of prime, virgin, polyolefin resins, Vapor Sentinel 20-Mil Vapor Barrier is manufactured as a multi-layer plastic extrusion. Apply Clear All Approximate Size Approximate Size 1000sqft 1. . 0, via Wikimedia Commons. Sentinel Moisture Barrier Polyethylene Film. Vapor Barrier. 1. x 50ft. Eco Ultra Quiet Premium Acoustical Underlayment. 99 / piece Size: 100sqft Color: Multi Color. Although crawlspace vents were originally designed to facilitate humidity exchange with the outside air, they may contribute to mold. 34. The Cost of Vapor Barrier Installation. We can start with a basic building science refresher. Accessories & Primers; Membranes. Blocks moisture to protect overlying flooring. If installing over concrete, the concrete must be dry with moisture emission rates that do not exceed 31 lbs. 99 / piece Size: 100sqft. COMPOSITION: Made with the highest grade of prime, virgin, polyolefin resins, Vapor Sentinel 20-Mil Vapor Barrier is manufactured as a multi-layer plastic extrusion. In every side of a building envelope, we are trying to create environmental separation and control the movement of four things: liquid water, air, water vapor, and thermal energy (heat). So the boards are resistant against water, moisture and humidity, SENTINEL CEMENT FOAM BOARD is an excellent alternative to traditional wall at shower, sauna, and any wet area where waterproofing and vapor barrier is absolute necessary to protect your home from mold and mildew. Where it is located in an assembly and its permeability is a function of climate, the. Cut holes in the barrier for electrical outlets, pipes, windows, and so on. When properly installed on your wall, floor, or ceiling, these odors will be undetected. 5-in (38. A vapor barrier or retarder must have a permeance of 0. $179. (888) 355-1522. Either roll out a new roll or use a folded over piece that is already cut. 400SQFT AMERIQUE Premium 3 mm Thick Flooring Underlayment Padding with Tape & Vapor Barrier 3 in 1 Heavy Duty Foam (400SF Total, 200SF/Roll), 400 sq. 1. Ceiling insulation is an essential part of any home that needs to keep the heat in during winter. 5 mmAlorAir® Sentinel HDi90 (Duct-able) Capacity. $58. Class A has the lowest perm rate while Class B (from 1 to 10 perms) and Class C (greater than 10 perms) allow higher perm rates. It features a 9 mil thick poly film, backed by a synthetic rubber adhesive, that is used for binding the seams of a moisture. 00 / piece Size: 194sqft. Sentinel XS Radon Vapor Barrier (1) Sheet Metal Protection (1) Signs of Crawl Space Issue (1) Skrim (1) Skrim- String Reinforced Polyethylene (1) Sola Wrap (1) Spill containment plan (1) Steel Banding or SolaWrap (1) Steiner Tunnel Test (1) Structural Care (1) Successful Greenhouse Venture (1) Supplemental Lighting (1) Surface. 198 PPD at Saturation, 90 [email protected] Sentinel New Construction is your ultimate vapor barrier solution for protecting your new developments against soil vapor intrusion. These walls are also insulated for sound proofing so even more important to water seal the outer layer from the inner cavity. Roll - 43" x 28' x 2. 00 each. The barrier comes in rolls about twenty-four inches wide. Basement Remodeling Ideas & How Tos Vapor SentinelTM Vapor Barrier Safety Sheet Continued on next page. No need to bother with large fold-out, low quality, off-spec, construction grade films, which can be bothersome and hard to use before the. Use acoustic spray-foam sealant or sealant tape to. 126 Reviews • SKU 10021412. Sentinel Eco Underlayment. Air & Vapor Barrier Laminated Boards; Air & Vapor Barriers. However, as alluded to above, the. 53 after $50 OFF your total qualifying purchase upon opening a new card. 97 (79) Model# 556487. SKU: 100824168. The list below discusses the best location for. Air & Vapor Barrier Laminated Boards; Air & Vapor Barriers. Air & Vapor Barrier Laminated Boards; Air & Vapor Barriers. Visqueen Vapor Block PE Film – This is used to block moisture and does not add any cushion. ft. A great vapor barrier should be around 10 to 20 millimeter of polyethylene and should not be placed right on top of the green board. 3in1 Blue Vapor Barrier Underlayment is universal and affordable. B. AlorAir ®1" Vapor Barrier; AlorAir ®Crawl Space Vapor Barrier; AlorAir® Butyl Tape RV; AlorAir ®360° Foldable 6000 Lumen Work Light; AlorAir® Alarm Water Alarm Water Detector; AlorAir® Cement Nails Steel Nail;Q. 25 mm), 15 mils (0. Ultimately, the goal of vapor barrier strategies and sealing tapes is to prevent moisture from collecting and corrupting building materials and be less susceptible to long-term moisture problems. It can be installed over any type of subfloor. $143. Vapor barriers can help control moisture in everything from basements and crawl spaces to ceilings and walls. If the poly is below the dew point, you get condensation on the poly. It is made of premium-quality polyethylene to ensure long-term use. Conclusion: Choosing the right crawl space vapor barrier thickness depends on the specific conditions and moisture levels in the crawl space. When installed. When vapor-laden air moves from one location to another, the vapor moves with it. Apply Clear All Approximate Size Approximate Size 1000sqft 1. Air & Vapor Barrier Laminated Boards; Air & Vapor Barriers. in 1948, these code requirements were never based on. The cool surface is the sheathing, assuming no exterior insulation. The function of a vapor barrier is to retard the migration of water vapor. Accessories & Primers. The Most Specified Below-Slab Vapor Barrier in North America. Fasten vapor barrier to wall. A moisture barrier is used when installing floors or walls in areas prone to dampness or excess moisture, such as basements, ceilings, or crawl spaces (source). Efficient Installation Proprietary Patented Technology Learn More New Construction Economical mitigation strategy Soil gas and moisture control Vapor Monitoring. For optimal moisture control you will want to overlap the poly barrier by at least six inches. In. 059 in. Stilfehler, CC BY-SA 4. About Sentinel. This 500 sq. If the plastic (6 mil min) is not large enough to cover the entire envelope in one piece, it should be installed at the bottom first, overlapped so. Most of the barrier materials used in the construction industry are vapor or moisture diffusers or retarders. 5 mm). Install-Ready: Patented built-in 6 mil vapor barrier with 3” overlap and self-sealing tape for easy installation. The HDX 20 ft. For applications as diverse as roofing, below grade waterproofing, plaza deck and balcony waterproofing, air and vapor barriers and bridge and parking structures, SOPREMA has the solution. Install vapor barrier over the entire floor area allowing for a 12" overlap for the wall curtain and all floor seams. GCP provides a comprehensive line of concrete and cement additives, building envelope and waterproofing products. This is roughly three times the size of Brazil. ft. Crawl Space Vapor Barriers key considerations: Permeability of water vapor, tensile strength of the film, and puncture resistance. Underlayments. Air & Vapor Barriers; Accessories & Primers. SENTINEL VCM can be used to fabricate metal flashings, pitch-pans and edge details. They are installed on top of cement backerboard, which is over the studs. The question now is if you’ll also. Offers full-adhering, watertight laps at all joints. Soil gas and moisture control. Seal patch with seaming tape. The vinyl coated metal can be used in both mechanically fastened and adhered roofing systems. 14 ft. 9′ X 100′. 100% reinforced. Everyday Low Price. The function of a vapor barrier is to retard the migration of water vapor. For more information about this video or Fausfloor® products visit Perfect for use on wood or concrete subfloors and on any level of your home, including basements. per roll, Moisture Barrier eliminates the hassle of dealing with a giant sheet of folded plastic. A well-installed vapor barrier helps protect against potential water damage or mold growth down there, too. 100sqft 5. 79. Installing a vapor barrier over this can cause moisture to become trapped within the material, leading to the growth of mold or warping in the material. 84T Laminate Blade $46. x 40 ft. Also commonly used to cover crawl spaces and as a temporary cover for equipment. It effectively protects the concrete slab from moisture entering. SOPRAFIX® 3″ Plates are specifically manufactured for use in SOPRAFIX Systems. NOTE: For standard laminate (without pre-attached padding) use standard or vapor underpayment padding. If the plastic. View Project. Accessories & Primers; Membranes. oz. ProtectEnvironmental. It has been precisely engineered to offer exceptional robustness while remaining lightweight. The presenter is using 6 mil thick poly barrier. Vapor Mat is a heavy-duty, impact resistant, cuspated material that facilities a pathway for soil gas transmission. 100 sq. SENTINEL P200 is a high-performance, bare-backed, thermoplastic polyvinyl chloride (PVC) membrane designed for both steep and low slope applications. 973-506-6550. Get it Sep 27 - Oct 3. Air & Vapor Barriers; Accessories & Primers. 2. Use seam tape to cover every seal of the vapor barrier, applying tape from top to bottom. The history of cold climate vapor barriers itself is a story based more on personalities than physics. Primers; Field & Flashing Membrane Resins;. 97 (120) Model# 564454. 0 perm •Class III Vapor Retarder: 1. Air & Vapor Barrier Laminated Boards; Air & Vapor Barriers. Per square foot, expect the crawl space vapor barrier cost to land between $1. These walls are also insulated for sound proofing so even more important to water seal the outer layer from the inner cavity. SOPRASEAL STICK VP is composed of a tough tri-laminate composite. If heavy equipment will be operating on the vapor barrier or if the vapor barrier will be installed over an angular subbase, a minimum of 15 mils is recommended. 74. The vapor barrier will cover and be sealed around them, so it’s worth double-checking now. We manufacture roofing products such as industry-leading SBS-modified bitumen roofing membranes, polymeric PMMA/PMA liquid-applied membranes and synthetic single-ply PVC membranes. Unroll and trim vapor barrier sheets. This study proposes a Level 2A PWV data. Sentinel Moisture Barrier Polyethylene Film. Air & Vapor Barrier Laminated Boards; Air & Vapor Barriers. explains that vapor barriers are classified into three categories: I, II and III. Tips for concrete floor vapor barrier installation: 1. The document has moved here. The presenter is using 6 mil thick poly barrier. Sentinel Moisture Barrier Polyethylene Film. USES: Vapor Sentinel 10-Mil Vapor Barrier is used for sub-slab installations, to protect indoor structures from soil gas transmissions, as well as moisture vapor. BEST. Description Features & Benefits Technical Features. It allows the user to create effective methods in detailing PVC-to-metal transitions. Air & Vapor Barriers. Knowing that vapor barriers are an effort in futility in a van, the relative humidity inside of your van will eventually make its way to the inside of your walls through tiny gaps and convection. Sentinel Protect Plus Underlayment. By understanding the characteristics and applications of 6 mil, 10 mil, and 20 mil barriers, you can educate your clients effectively, helping them make informed decisions to safeguard their homes from. g. Click here to view our selection of vapor barriers and underlayment. An excellent discussion about the differences between vapor barriers and air barriers can be found in Quirrouette (1985). Air & Vapor Barrier Laminated Boards. Moisture tends to migrate from areas of greater (or warmer) concentrations into areas of lesser (or colder) concentrations. 120sqft 1. x 75ft. Sentinel XS Radon Vapor Barrier is a 5 layer barrier engineered to have low permeability, extreme strength on a very durability material. 120sqft 1. Measure and cut a piece of the vapor barrier to cover the damaged area 6” in all directions. Installation of Stagestep Vapor BarrierSOPRABOARD is a semi rigid, asphaltic roofing substrate board for use in approved multi-ply membrane and flashing assemblies. 4. Where it is located in an assembly and its permeability is a function of climate, the characteristics of the materials that comprise the assembly and the interior conditions. Instead, for do-it-yourselfers, the easiest type of insulation to use is rigid foam on the walls. Waterproofing Preservation Polishing Epoxy Coatings Traffic Coatings Concrete Prep Vapor Barriers Other Services. If you are a DIYer, the cost could be extremely minimal. Fashion Institute of. Clear Plastic Sheeting is suitable for construction and DIY projects. 200sqft 1. 2mm thick, available in 100 sq. Primers; Field & Flashing Membrane Resins;. comVapor Barrier Insulation. This study proposes a Level 2A PWV data. The permeance is as low as 0. Air & Vapor Barrier Laminated Boards; Air & Vapor Barriers. 00 / piece Size: 194sqft. SOPRABOARD is designed for use with SOPREMA®’s SBS-modified bitumen membranes and may be used as a. We can start with a basic building science refresher. However, an installation between the studs can pose a challenge. Calculate my square. USES: Vapor Sentinel 20-Mil Vapor Barrier is a sub-slab barrier. x 100 ft. Size: 1000sqft.