Methods Used to Determine Vapor Retarder Effectiveness 8. We offer Free in-store returns in case you need to return extra material. A vapor barrier is intended to keep water vapor or water molecules from passing through the barrier. First, debris in your crawl space needs to be cleared out before installing a vapor barrier. Do not pound form stakes through the vapor barrier. Select the Vapor Barrier. The concrete foundation of your building may feel rock-solid. 4/7/10 5:03 PM. A well-installed air barrier controls both the flow of air. In homes with dirt basements, they poured a concrete floor or installed a vapor barrier. We’re proud to serve customers in the San Francisco Bay Area, Los Angeles and New Jersey. The presenter is using 6 mil thick poly barrier. When it comes to temperature, insulating metal buildings is essential because metal is a far better heat conductor than wood. A moisture barrier for hardwood floors can be as simple as a roll of plastic sheeting. Or you might consider spray foam between the studs. Following installation, each depressurization system was tested to ensure that it worked properly. View All Locations. 00 Perms IMP. 6” (15 cm) of release film. The drywall will absorb the moisture, but like any materials in a home, the drywall will assume the same relative humidity levels as the basement. Sentinel Moisture Barrier is a polyethylene film that provides a barrier for moisture protection over cement slabs. 15 to $0. SOPRASEAL LM 202 VP is a one-component spray applied vapor-permeable air barrier membrane used in wall construction. 600Sqft AMERIQUE Premium 3 Mm Thick Flooring Underlayment Padding with Tape & Vapor Barrier 3 in 1 Heavy Duty Foam (600SF Total, 200SF/Roll), 600 Sq. Caulk all seams at installation perimeter / edges. e. x 140 ft. Stake the plastic down with landscape fabric stakes to keep it in place. How to Install a Vapor Barrier on a Concrete Floor 1. The function of a vapor barrier is to retard the migration of water vapor. Type. Economical mitigation strategy. Installing an effective vapor barrier is only for experienced DIY experts. After much research, I have a lot of conflicting advise about the need to add a vapor barrier before installing the backer (hardy / cement) board for my bathroom shower. OptiMax sells for $3. For example, let’s say a single wide is 16 feet wide and 72 feet long so I would add: 72 + 72 + 16 + 16 + 12 + 12 = 200 feet. It helps increase the life and appearance of your flooring. Less risk, less cost, and more data collection for your peace of mind. Water stains on your walls and ceiling. 01 Sheathing joints Seal exposed raw cut edges of gypsum sheathing with Henry Blueskin Spray Prep Aerosol. Manuals may also be downloaded from our web site. Restricts migration of soil gases such as radon and methane. 50. 70 and $3. Easy installation: They are typically available in rolls, making them easy to handle and. It inclused a 3″ overlap and self-adhesive strip to make installation even easier. AVAILABILITY & COST Vapor Sentinel 10-Mil Vapor Barrier is available directly through. Chances are that someone will have to slide around in the crawlspace later to fix a pipe or run. Made from pulverized newspapers and treated with boron to resist fire and pests. Some supports come with wide bearing pads. Safe Handling Precautions Practice good housekeeping and personal hygiene and always wash hands after handling the product. Polyurethane sheeting is a typical vapor barrier that contractors use to prevent moisture from penetrating the walls of a basement. • Easy to seal with built in lip and tape. Step 5: Seal any seams or gaps. Garage-To-Attic Interface Detail. Plastic or polyethylene is a vapor barrier. change location. In most U. 84T Laminate Blade $46. 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. 12" thickness foam layer that provides optimal cushioning and sound absorption, as well as a closed-cell foam design that offers. Use more butyl tape to secure the bottom of the vapor sheet. We used Farm Supply brand 6 mil reinforced string solid white vapor barrier, Blue Summit vapor barrier seam tape, and Zip System flashing tape for this insta. Following installation, each depressurization system was tested to ensure that it worked properly. Install a sump system if needed. It is designed to effectively extract all excess moisture from the air to make it inhospitable for harmful entities such as mosquitoes to thrive and bring harm to your family. Prices start at just over $2. Atticare is a top-rated and fully licensed insulation contractor. Screw one elbow onto one end of the black threaded plumbing pipe. However, foam insulation has higher R-values and forms an air barrier, which can eliminate some of the other costs and tasks associated with weatherizing a home, such as caulking, applying housewrap and vapor barrier, and taping joints. Blind nail to wall framing through drilled pilot holes. a. Crawl under your mobile home by entering through the skirting. , how much we stop or let. Before installing the systems in 2007, EPA sealed cracks in basement walls and floors, and covered sump pits. Seal Stego Wrap along all terminating. Lowes recommends installing a plastic vapor barrier behind the backer board in addition to a paint-on barrier between backer and tile. It is ideal for use with laminate flooring with pre-attached underlayment. ’. All bidding is online. PolyFoam PF080400100 Basic. Complete 26-ft x 3. A moisture or vapor barrier prevents water from wicking up from the ground, through the sub-floor and absorbing into the hardwood floor. It’s worth noting that the thicker material your vapor barrier has, the more costly it will be. Sentinel 10in. Vapor Sentinel New Construction Systems eliminate the need for costly trenching and. explains that vapor barriers are classified into three categories: I, II and III. The vinyl coated metal can be used in both mechanically fastened and adhered roofing systems. Dimensions: 14 ft. This helps prevent problems like mold and condensation in buildings. Find My Store. Air Barrier Installation Detail: Interior Insulation Dam. They prevent moisture from entering your home’s crawl space, which can cause a wide range of issues, such as mold growth, high humidity, structural damage, and poor indoor air quality. 15 a foot or $160 to $200 for a 1,200. NEW 3M™ Air and Vapor Barrier 3015NP provides building protection that installs quickly and easily even under extreme conditions without sacrificing performance. The cost of strong vinyl tape for securing plastic at the edges and for taping sheeting. It explains that almost all contractors or remodelers will use and recommend 6-mil plastic sheeting as an affordable and effective vapor barrier. As such, it’s important to inspect your vapor barrier at least once a year and conduct basic, at-home maintenance. Support our channel if you find our content valuable This video reveals how to make and install a 6 mil poly waterproof plasti. You will want to overlap the vapor barrier equal to 2 inches or more on the wall. . Slide the PVC pipe onto the black threaded plumbing pipe (start at end without the elbow attached). It is recommended to use Sentinel Protect Plus Underlayment for optimal sound absorption and moisture resistance or a standard vapor barrier like 6mil PE Film. SECTION 4 Stego Wrap Vapor Barrier and Retarder Installation Instructions 6 Always consult the project design team for where to terminate the vapor barrier to strike the balance between the location of the vapor barrier on or around foundation constructions and any structural concerns before proceeding. A vapor barrier is essentially refers to any building material that is used for creating a resistance against the passage of water vapor and moisture within the drywalls. Include window and door openings in exterior. April 15, 2011. The vapor could readily penetrate into the insulation thus the barrier aids to prevent this on the outside wall. 85-ft x 1. Subscribe Now:. 50 per square foot on average, depending on the thickness of the plastic, which ranges from 6 to 20 millimeters. It also has the ability to provide you increased energy. 2mm thick, available in 100 sq. S. By Mark Robins. Amazon Affiliate links for acoustical sealant:you want to help support Shannon to produce more videos like this, visit Sentinel® Basic, this manual and/or CD and the 7. If any of the conditions cited above pose a problem for the typical installation of Vapor SentinelTM Vapor Barrier,. A 6 mm thick vapor barrier might cost about $0. vapor intrusion is most likely to be a problem. Unroll 1st piece of vapor barrier along one edge of floor. . Flooring moisture barriers are placed beneath. The best approach for a vented attic, in a cold climate, is installing a layer of drywall with a good coat of latex paint (the paint creates a semi-permeable vapor barrier). And, the barrier is made for good value, is made for easy installation with overlap and it is affordable. SENTINEL P150 HFB is reinforced with a tenacious, anti-wicking, weft-inserted polyester fabric that is encapsulated on both sides with a proprietary thermoplastic PVC formulation. $34. Our MoistureBlock is a 6 mil polyethylene film vapor barrier that is used during the. 44 per square foot. For Use With: For Use with Vinyl PlankClear All. 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). The installation process of SENTINEL CEMENT FOAM BOARD involves cutting it into the required size,. Pull the barrier tight to prevent air leaks. PolyFoam PF080400100 Basic Foam Underlayment for Wood & Laminate Flooring, 100 sq ft, White. As a result, we have the. Seal patch with seaming tape. 006 Film Barrier Installation Methods • Floating Floors For Use Under • Hard Surface Flooring. For a complete building envelope, built with the durability you've come to know in our roofing and waterproofing products, SOPREMA offers a comprehensive line of air and vapor barrier products ranging from self-adhered to spray or roller grade permeable and non-permeable options. CrawlSeal™ Encapsulation System is the Protection You Need. • While 3M Air and Vapor Barrier 3015 can be applied as low as 0°F (-18°C), surfaces must be clear of snow, ice or frost. When rolling out the moisture barrier you want to go from wall to wall and cover the entire floor. 6 mil reinforced vapor barrier. The downside to using a waterproofing membrane is that it's expensive. • Reduce in-room noise and impact sound for quieter, more pleasant spaces. Obtain air barrier and auxiliary materials as a single-source from the Air Barrier Manufacturer to ensure compatibility and compliance with the following requirements: Minimum Application Temperature: 41°F (5 °C) Service Temperature: -40 °F to 158 °F (-40 °C to 70 °C) Water Vapor Permeance (ASTM E96 Method B): 0. This may happen from bad luck, locating an unsealed control or construction joint in our floorless slab directly over the hole. ft. Especially if you have concrete subfloors. Secure the edges of the vapor barrier to the concrete using tape or staples. Top and Bottom Wall Interface - Methods 1 & 2. Vapor Barriers – According to the International Energy Conservation Code (IECC), a vapor barrier is: “A vapor-resistant material, membrane or covering such as foil, plastic sheeting, or insulation facing having a permeance rating of one perm (5. A vapor barrier basically helps to prevent moisture from entering your home through the. . Vapor Sentinel provides the latest in remote telemetric monitoring technology to provide around-the-clock data collection and reporting. Source. I will agree that it is possible to install 6-mil polyethylene as an air barrier. When you specify Stego Barrier Solutions and products, you gain access to a large nationwide network of full-time technical sales managers providing unmatched local support and service. It also protects the structural integrity of your home and can reduce energy costs from 15 – 25%!These systems also can prevent inward drying (i. SOUND REDUCTION: Reduces sound transfer, making the floor quieter in the home. Unroll the vapor barrier and lay it over the concrete surface you wish to protect. 50 a square foot, or $375 to $2,250 for a 1,500 square foot space for multiple vapor barriers. Seal the edges of these cut areas with a sealant. 35 – $4. Plywood subfloors: A breathable foam-type underlayment is generally used when installing laminate flooring over plywood or OSB subfloors. In addition, you’ll need to buy tape to secure the vapor barrier, which usually costs around $50 for a 4-inch-by-180-foot. PANGO® WRAP TERMITE/VAPOR BARRIER INSTALLATION INSTRUCTIONS P3 of 3 BEAST® CONCRETE ACCESSORIES - VAPOR BARRIER SAFE BEAST ® HOOK is a faster, easier way to set 2x4 overhead screeds. Vapor barrier installation techniques vary depending on the type of insulation and the climate you live in. Using hand pressure, lightly apply the exposed adhesive surface to the substrate and check for proper alignment. Synthetic fiber pads are fast becoming the most specified underlayment architects and designers due to their acoustical and moisture protection qualities. A vapour barrier can easily be realised with a plastic foil like Polythene (at least 0. RUNNER-UP: QuietWalk Plus QW100PLUS Underlayment. Cost-effective: Polyethylene vapor barriers are relatively affordable compared to other types of barriers, making them a popular choice for both residential and commercial applications. Types: 30-pound asphalt-coated paper, bitumen-coated kraft paper, plywood, vapor retarder latex paint 0. Step 1: Gather necessary materials. 79 to $4. Fiberglass and foam board insulation costs can reach $1 per square foot. This will cause laminate floor problems such as cupping and gaps. 2 mm thick). Rather than trapping moisture, this semi-impermeable vapor barrier, allows moisture to slowly dissipate through the flooring without mold. Stego is the leader in the below-slab concrete vapor barrier market. A barrier consists of a vapor barrier and venting system. A vapor retarder is a material that reduces the rate at which water vapor can move through a material. The Amerique sentinel basic vapor barrier is perfect for wood, bamboo and laminate floors. ”. This heavy duty 60 yard roll of moisture resistant crawl space vapor barrier seam and seal tape is highly durable, waterproof and weatherproof. Repair large cracks or damaged walls. Finally, unroll the vapor barrier and press it firmly onto the concrete floor. 2 Cold Insulation Procedure for Equipment:vapor intrusion is most likely to be a problem. The drywall won't stop the moisture like a vapor barrier, it will move through it. This, of course, is in exchange for better. Re-grade Soil to Direct Water into Drainage System. INSTALLATION SUB-SLAB: Vapor Sentinel TM 20-Mil Vapor Barrier is unrolled over an aggregate, sand or tamped base. Installation. 49. x 1. There are multiple types of vapor barriers, each ideal for different kinds of surface flooring. Average costs and comments from CostHelper's team of professional journalists and community of users. Attach the snap hooks to each quick link. ROBERTS Moisture Barricade is an underlayment film manufactured to be used with flooring underlayments to protect against moisture when installing laminate and engineered wood flooring. Most condo and apartment associations will specify certain Sound Transmission Class (STC) and Impact Isolation Class (IIC) ratings when it comes to installing underlayment and flooring. Now, measure and cut a high-quality vapor barrier to fit the crawl space and allow several inches to run along the walls. Mounting Mount the Silence Sentinel® Basic where it will be visible and rear panel accessible. These boards are resistant to water, moisture, and humidity and have good insulation properties. 0031 inches thick, and unfaced expanded or extruded polystyrene. A 6 mm thick vapor barrier might cost about $0. VYCOR® enV-S™ represents the next generation of weather resistive barriers and is designed to provide superior weather protection, and improved energy performance. ExoAir 130 can be used with ExoAir 110, ExoAir 110AT or Dymonic® 100 liquid flashing to. No more than 3 – 90 degree bends should be made for any sentinel wedge installation. 4 mm Acoustical Underlayment with Vapor Barrier for All Vinyl Plank Flooring. If you choose to install it in the bathroom, read the warranty very carefully. Pango Wrap Termite/Vapor Barrier. Vapor Sentinel New. STEGOHOME® BELOW-SLAB VAPOR BARRIER/RETARDER INSTALLATION INSTRUCTIONS Continued. In Joseph Lstiburek's "Top Ten List of Dumb Things To Do In The South", he says that all brick should have a vapor barrier drainage plane. Roll - 40" x 189' x 2 mm. Extend Vapor Sentinel 10-Mil Vapor Barrier up the foundation wall. When it comes to vapor barriers, a true one has an impermeability value of 0. Sentinel 821 adhesive primer. Document that the vapor barrier is intact prior to installation of concrete floor (ie. Wilmington, NC 28405. Controlling water vapor movement in homes is essential. Water vapor can enter a basement or crawlspace by evaporating from the interior surface of a damp wall or slab. BEST OVERALL: Roberts First Step Premium Underlayment. And the membrane on the "bottom" is also a vapor barrier. (xiv) Before the application of jacketing all insulated surface shall be sealed with vapor barrier sheet. easy installation with self - adhesive strip. Nucore is Floor and Decor’s exclusive in-house vinyl plank flooring brand. If the roof is insulated with foil-faced insulation blankets, the. QuietWalk Plus Laminate & Wood Flooring Underlayment (Float, Glue, or Nail) with Vapor Barrier-. Surround the pipe with textured double-sided tape to help anchor the epoxy, ensuring a tight seal. Failure to install a proper vapor retarder over concrete will likely result in a floor expanding. Step 4: Attach the vapor barrier to the walls. TOP. Firstly, the vapor barrier should always be installed on the warm side of the wall. Make sure the subfloor is level, clean,. The "expert" at Home Depot, and another guy on youtube seem to think this is a very good idea, and even suggest sealing it with roofing tape. How Much Does It Cost to Install a Vapor Barrier? Depending on the thickness of the plastic, which ranges from 6 to 20 millimeters, a crawl space vapor barrier costs $0. 3. No need to bother with large fold. Installation of Stagestep Vapor Barrier If any of the conditions cited above pose a problem for the typical installation of Vapor SentinelTM Vapor Barrier, please contact Vapor Products Group for additional information and solutions. Vapor Barriers provide additional protection between the subflooring and flooring by preventing the emission of vapors and moisture to the inside of the home. A durable barrier system that saves on your bottom line. See On. Hydraulic Wedge Barrier - Sentinel. Rot to your ceiling and walls. Roll Out and Cut Plastic Sheets. This sub-floor barrier slows moisture migration and helps prevent buckling, cupping, and cracking. Step 7: Final steps and considerations. The difference between air barriers and vapour barriers: The job of a vapour barrier is to prevent vapour diffusion and the job of an air barrier is to stop air leakage through differences in air pressure between inside and out. How did this project turn out? WATCH HERE:. to 3⁄4-in. Prices start at just over $2. The Importance of Installing a Crawl Space Vapor Barrier. Moisture management strategies respond to the forms of water that impact the performance of. Known for our flagship Stego Wrap line of under-slab vapor barriers and retarders, Stego has earned the respect, trust, and recommendation of architectural, engineering, and construction communities. It features a 9 mil thick poly film, backed by a synthetic rubber adhesive, that is used for binding the seams of a moisture barrier when encapsulating a crawlspace. Get tips on working on flooring under various types of conditions with help. Once installed, tile can be applied directly on top. Guarding the Green Board; A vapor barrier is strategically. All conduit bends should avoid 90 degrees, if 90 degree bends are necessary only utilize a long sweep 90. of foam or mineral-wool board against the concrete. When it comes to vapor barriers, a true one has an impermeability value of 0. Do not use the more expensive sentinel protect plus. No other materials are needed for install due to the Lip & Tape Design ensuring quick and easy install above, on or below grade. We can start with a basic building science refresher. Install a 6-mil polyethylene vapor barrier with seams taped or a high-density polyethylene dimple mat with seams taped (see Figure 1). An average vapor barrier installation costs $2 to $4 per square foot or between $1,200 and $4,000 for materials and labor. Next, to prevent cold air from entering the crawl space, install R30 Fiberglass insulation into the bond cavity. Cut holes in the barrier for electrical outlets, pipes, windows, and so on. The perimeter of a home is found by adding all of its sides together. The Vapor Sentinel New Construction System protects your new construction projects from hazardous soil vapors without the need for trenching or aggregate backfill. Large Blowing Machines. Sentinel Underlayment Installation Instructions. ft rolls. Vapor Sentinel New Construction Systems eliminate the need for costly trenching and aggregate backfill with its stronger-than-concreate gas-permeable layer. Because the idea is to keep water vapor out of the building’s main structural elements, you need to install the vapor barrier closer to where the humidity and moisture are going to come in. This can be attached with staples beneath the rafters or trusses on the inside. Installation of Stagestep Vapor BarrierRestricts migration of soil gases such as radon and methane. So if you keep a dehumidifier running, it keeps the air dry. Vapor barriers restrict the flow of water vapor (diffusion) through materials. x 60 ft. ADVANTAGES INSTALLATION INSTRUcTIONS • Always read the flooring manufacturers recommendations and instructions before installing the. Gather Your Materials. That means that if you live in a cold northern climate where you have more heating days than you have AC days, your vapor barrier should be on the inside of the wall assembly (just beneath the drywall). Cut the felt as long as the stud bays, but about 2 in. Color: yellow. Impermeable to the leakage of air. The cool surface is the sheathing, assuming no exterior insulation. It’s not a sealed system which means moisture can go under or around the vapor barrier and still get into your crawl space. The plastic sometimes used on the warm-side of building walls (on the wall interior under drywall in northern climates) is a vapor barrier. Take This video describes the process of installing a moisture barrier over a concrete subfloor. And bring the plastic about 6 in. Class II barriers are semipermeable, allowing some fluid to get through. The. 100% reinforced. LifeProof also features an easy to install fanfold design with printed cutting grid making it easy for DIY projects. FEATURES & BENEFITS MOISTURE PROTECTION 6 mil reinforced vapor barrier. ', Royal Blue (Pack of 3). BEST FOR SOUND INSULATION: Roberts 70-193A Super Felt. You will be able to grow healthy, strong plants in your greenhouse by keeping mold, mildew, rot, and water damage at bay. Using a combination of Vapor SentinelTM barrier and tape, all penetrationsVapor barriers aren’t really what they seem to be. See installation instructions and warranty information for more guidance. Vapor barrier with PE film; Easy to install with attached overlapping lip and tape; Quick View. In most cases, you will not want to use a vapor-barrier-type underlayment when installing laminates on a standard plywood subfloor, because wood is a natural material that needs to breathe. 1 perms but less than or equal to 1. The cost of a vapor barrier installation ranges from $2 to $4 per square foot or $1,200 to $4,000 in supplies and labor. Consult local building codes prior to installation and to determine the length to cut barrier. ROBERTS First Step Premium Underlayment - 630 sq. Firstly, cut the vapor barrier to fit your basement – it should be at least 4 feet wide and 6 feet long. 2mm thick comes with vapor barrier,overlap and pre-attached tape for easy installation ;. , wet lumber, cast-in-place concrete, etc. BEST. Home | AmeristarInstallation. At other times of the year,…We would like to show you a description here but the site won’t allow us. Step 6: Install the flooring over the vapor barrier. Select the Vapor Barrier. The higher the rating, the more effective at limiting sound. The. . Staple the vapor barrier material to the wood floor joists of your mobile home with a staple gun. Its superior strength helps to protect locking systems and joints. Vapor barriers come in a variety of materials, with two of the most common options being. Step #2: Measuring the Crawl Space – Once the crawl space is cleaned and repaired, it will need to be measured for specific dimensions to ensure that the barrier installed fits and doesn’t leave room for moisture and pests to creep in. 3M acrylic adhesive technology allows for primer-free application from lightweight rolls that saves you up to 40% on installation time. 3. A vapour barrier (sometimes referred to as vapour retarder) is typically a plastic or foil sheet used for damp proofing to prevent interstitial condensation from forming in various building assemblies such as walls, roofs, foundations and floors. 99 / piece Size: 10in. For example, in a pressurized building under normal heating or cooling conditions, the moisture transported through a 25. The most obvious best practice is to install a sub-slab vapor barrier in the first place. On/Off (Power). MOISTURE PROTECTION: Helps prevent mold, mildew, and other issues related to vapor. $132. B. For more information about this video or Fausfloor® products visit If any of the conditions cited above pose a problem for the typical installation of Vapor SentinelTM Vapor Barrier, please contact Vapor Products Group for additional information and solutions. The Vapor Sentinel Soil Gas Control System is a sub-slab ventilation system that traps harmful radon and chemical VI gases and prevents them from entering the building. ) square hole can be up to 100 times greater than the amount of vapor diffusion through a 1220 x 2440-mm (48 x 96-in. If required, the system can be activated to. Basic Uses. Vapor Barriers provide additional protection between the subflooring and flooring by preventing the emission of vapors and moisture to the inside of the home. If you're looking for something more affordable, we recommend Dekorman 2-N-1 Moisture Barrier 2mm Blue Foam Underlayment because it is easy to install and resists moisture damage, mold, and mildew. Average Cost of Vapor Barrier Installation. Determining the Need for a Vapor Retarder 6 . A crawl space vapor barrier costs $0. The barrier keeps moisture from reaching the walls, and it also helps water drain into the soil, so there is not a layer of water trapped in the crawl space. Refer to SOPREMA® specifications and installation instructions for additional. In a typical commercial building or home, vapour barriers or vapour diffusion retarders can improve. The vapor barrier is a thin layer of plastic installed on top of the wooden frame enclosing most wine cellar applications. Contact Professionals: Reach out to roofing professionals to assess the extent of the damage and provide a. Formulated from top-quality polyethylene (polyolefin) resins. Rated to no less than 3000 PSIG (20. Industrial Strength to Insulate Any Space. 1-877-464-7834. Installation of Stagestep Vapor BarrierVapor Sentinel New Construction is your ultimate vapor barrier solution for protecting. This five-minute video provides everything you need to know to properly install Stego® Wrap Vapor Barrier below a concrete slab to prevent against moisture d. INFORMATION ON BASIC PHYSICAL AND CHEMICAL PROPERTIESHome | AmeristarSENTINEL P150 HFB is a high-performance, fleece-backed, thermoplastic polyvinyl chloride (PVC) membrane designed for both steep and low slope applications. vapor intrusion is most likely to be a problem. , Silver Chrome (Pack. Your. Make sure this fits by entering your model number. This underlayment protects floors with quality moisture protection while offering basic soundproofing;. The cost of installing a vapor barrier depends on the type of vapor barrier, measurements of your crawl space, and other materials or tools. Barritech VP can be applied over concrete block, concrete, exterior gypsum sheathing, plywood, OSB and many other common building materials. Allows any accumulated moisture to either drain to the exterior or evaporate. I put the barrier on the inside to prevent condensation in my wall cavities. You’ll always know your mitigation systems are performing correctly and building occupants aren’t being exposed to harmful VOCs. Basic Vapor Barrier Design .