Suitable for all types of subfloor including cement subfloor. If possible water should be applied as a spray from a fogging nozzle since this is a surface burning material. 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). Accessories & Primers; Membranes. Air & Vapor Barrier Laminated Boards. $143. A crawl space vapor barrier is a specific type of plastic sheeting/ membrane that works to prevent the infiltration of water vapor from passing through to the surface above. The product can also be used to encapsulate crawl space floors and. 1-877-464-7834. The sheet will help keep out water vapor, making it less likely that your basement will struggle with high levels of humidity. per 24 hours as measured by the Anhydrous Calcium Vapor SentinelTM Vapor Barrier Safety Sheet Continued on next page. Vapor barriers aren’t really what they seem to be. 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. 6 ft. It allows the user to create effective methods in detailing PVC-to-metal transitions. ENVIRONMENTAL FACTORS: Vapor Sentinel 20-Mil Vapor Barrier is used in systems for the control of soilUSES: 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. Name. It’s securely attached to the wall, directing any leakage into our BasementGutter™ internal drainage system, providing instant relief from damp walls. oz. The question now is if you’ll also. The permeance is as low as 0. 300sqft 3. ALSAN FLASHING is a unique polyurethane bituminous resin specifically formulated for liquid-applied flashings, details and maintenance applications. But it failed. Plastic on the outside of the wall, humid air inside. Air & Vapor Barriers; Accessories & Primers. 6-mil Vapor Barrier. 0086 perms for a Stego wrap. 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. Roll 46. Some plastic sheeting vapor barriers have self-sealing edges, so you don't have to. Vapor Sentinel New Construction Systems eliminate the need for costly trenching and aggregate backfill with its stronger-than-concreate gas-permeable layer. Vapor barriers used in standard construction practices are not typically designed to mitigate. The size of the ozone. It has prefabricated miters and accessories to ensure a proper fit and prevent the need for any field fabrication. ”. Soil gas and moisture control. Air & Vapor Barriers; Accessories & Primers. Also known as a moisture barrier, a floor vapor barrier is typically a sheet of plastic that slows moisture from moving through a wall or subfloor. x. 200sqft 1. Using a utility knife, cut the length long enough to wrap edges up the wall 3 - 4 inches. Vapor Mat is a heavy-duty, impact resistant, cuspated material that facilities a pathway for soil gas transmission. A vapor barrier is not typically intended to retard the migration of air. The audimute sentinel basic vapor barrier is perfect for homes, offices, studios, restaurants, and any other space to help block sound from entering or exiting. , 6–15 mils) that are used to mitigate moisture transmission through concrete. Buy from trusted and established brands like Sentinel ; The most affordable underlayment items;. Apply Clear All Approximate Size Approximate Size 1000sqft 1. 36in. Stego Wrap Vapor Barrier will help remove the risk of water vapor accumulation and the transmission of various soil gases. Primers; Field & Flashing Membrane Resins;. You’ve rolled out tens of thousands of square feet of your below-slab vapor barrier, the highly-engineered plastic that will protect your slab from. Air & Vapor Barrier Laminated Boards. A. 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. 99 / piece Size: 100sqft. 50 to $9 per square foot, based on an average 1500 square foot home. Select vapor barrier. PVC Membranes; PVC Accessories; PVC Adhesives; ALSAN® RS Liquid Resins. Use acoustic spray-foam sealant or sealant tape to. 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. 84T Laminate Blade $46. As a second line of defense, the system allows for simple and easy mitigation system installation if the need arises. 99 / piece Size: 120sqft. Sentinel Moisture Barrier Polyethylene Film. 00. Instead, for do-it-yourselfers, the easiest type of insulation to use is rigid foam on the walls. Premium Universal Underlayment. Weekly Household Auction Terms & Conditions. SKU: 100824168. 120sqft 1. Roof Protection. The water control layer in this type of wall should not be a vapor barrier – it should be semi vapor permeable. Cal-Flor VaporBlock is designed to be used under floating hardwood and laminate floor underlayment's to prevent vapor from coming up through the subfloor to your flooring. 120sqft 1. It has been precisely engineered to offer exceptional robustness while remaining lightweight. DUOTACK SPF HFO Adhesive was developed to provide a much quicker and easier application in order to save time and. BEST BANG FOR THE BUCK: Bestlaminate 3 in 1 Flooring Underlayment. Polyethylene Film. A vapor barrier in a basement protects the area from moisture damage and keeps it comfortably dry by reducing the amount of moisture coming through the foundation walls. Call AFS Foundation & Waterproofing Specialists for Basement Vapor Barrier Installation. Send . We built a home with 2 X 6 stud walls, fibreglas insulation and polyiso spray foam around vents and critical areas. The job of a vapor barrier is to prevent vapor diffusion, and the job of an air barrier is to stop air leakage through differences in air pressure. Vapor Mat is a heavy-duty, impact resistant, cuspated material that facilities a pathway for soil gas transmission. While laying the vapor barrier, ensure a 6-inch overlap along any seam between sheets. Felt: Denser than foam, offering more sound insulation, and some options can have an attached vapor barrier. $68. x 50ft. Hewitt, NJ 07421. We’re also a leading provider of roofing. If you live in Alabama (Mobile, Birmingham, Huntsville) or Tennessee (Nashville, Chattanooga, Knoxville), AFS can install a vapor barrier in your basement. Air control layer Stud bay cavity polyurethane spray foam insulation. SENTINEL COPPER ART Prefabricated Outside Corners SDS. Surface Preparation. Abstract. 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. A vapor barrier is strategically placed between the green board and the water. Pay $401. Apply vapor barrier seam tape. 921 Burnt Meadow Road. x 100 ft. Soil gas and moisture control. 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. SOPRAVAP’R is a self-adhesive air barrier/vapor retarder membrane composed of a tri-laminated woven polyethylene facer and SBS modified bitumen. Once installed, tile can be applied directly on top. Sentinel adhesive primer acts as a vapor reducing moisture barrier. 059 in. 5 – 10 minutes). Sentinel Moisture Barrier Polyethylene Film. lvp underlayment. x 40 ft. The attached vapor barrier helps to protect your flooring from water damage. 50 to $0. Vapor barriers can help control moisture in everything from basements and crawl spaces to ceilings and walls. Basements, because they’re below grade, are prone to excess humidity and moisture, which can cause mold growth and other problems. Our MoistureBlock is a 6 mil polyethylene film vapor barrier that is used during the installation process with floating laminate, luxury vinyl planks and engineered wood floors. S. Shop at SOPREMA. 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). Accessories & Primers; Membranes. You can also create a vapor barrier or cover crawl spaces thanks to its multipurpose design. oz. Everyday Low Price. Accessories & Primers; Membranes. 006 in. . Find helpful customer reviews and review ratings for QuietWalk Plus Laminate & Wood Flooring Underlayment (Float, Glue, or Nail) with Vapor Barrier- Sound Reduction, Compression Resistant, Moisture Protection 3'Wx33'4”L Roll (Covers 100 sq ft) QW100PLUS at Amazon. SOPRABOARD is designed for use with SOPREMA®’s SBS-modified bitumen membranes and may be used as a. However, the current practice recommended by the American Concrete Institute is to apply a heavy-grade, non-penetrable vapor barrier (or retarder) with the lowest possible permeance for the application over a layer of granular fill (crushed rock, gravel, etc. ASTM E 96 measures in part the "permeance" or how much water can pass through the vapor barrier. A quality air and vapor barrier membrane helps create an efficient exterior wall system by preventing air, and any accompanying moisture, from infiltrating the structure’s interior. A well-installed vapor barrier helps protect against potential water damage or mold growth down there, too. MP Global Products MoistureBlock™ Floating Floor Underlayment Vapor Barrier. 36in. 5-mm Premium Cushion Flooring Underlayment (100-sq ft /Fan fold) Model # 1102002500. ft roll. Barrier Seaming Tape is a low-permeance tape designed to securely connect. SOPRA-TITE SENTINEL® Drip Edge. Buy from trusted and established brands like Sentinel ; The most affordable underlayment items;. Sentinel has been in the crawl space restoration industry for decades, and is the most experienced local company in regards. The product can also be used to encapsulate crawl space floors and walls. This 500 sq. Any. 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. If you don’t have an attached pad floor, the Sentinel Moisture Barrier Polyethylene Film or the Silicone Vapor Shield Underlayment works best. Pipe boots can be installed on top of the barrier for pipes up. Vapor Barriers. 5 mm). 00 / piece Size: 194sqft. Installation of Stagestep Vapor BarrierSOPRABOARD is a semi rigid, asphaltic roofing substrate board for use in approved multi-ply membrane and flashing assemblies. Prep Step #2 - Subbase Preparation: The concrete floor slab needs an appropriate subbase to be placed upon. ft rolls. The Vapor Sentinel New Construction System is a solution for soil gas control to. 5 mm thick high density XPS foam, this underlayment enhances the performance of your floating floor. If possible water should be applied as a spray from a fogging nozzle since this is a surface burning material. ft. Air & Vapor Barrier Laminated Boards; 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. SKU: 100472307. SOPRA-EDGE SENTINEL® Fascia is manufactured in 12 foot lengths with pre-punched fastening holes in the galvanized water dam to ensure correct fastener placement and spacing. MOISTURE PROTECTION: Helps prevent mold, mildew, and other issues related to vapor transmission; THERMAL BARRIER: Decreases both heat and cold transfer through the floor by as much as 15%, leaving a warmer floor in the winter and cooler floor during the summer Sentinel Moisture Barrier is a polyethylene film that provides a barrier for moisture protection over cement slabs. Its purpose is to help prevent water vapour from reaching building walls, ceilings, attics, crawlspaces or roofs, where it can condense and cause building materials to rot or grow mould. Hg (3 ng/h • m2 • Pa) at only 12 mil thickness. (Source: Sentinel Pest) In Conclusion. , Silver Chrome (Pack of 2). The function of a vapor barrier is to retard the migration of water vapor. The yellow plastic film should face the subfloor and the overlap should be on the opposite. When installed. 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. Seal the seams with no gaps using duct tape or moisture-resistant and long-lasting tape. VaporSentinel. 00 / piece Size: 300sqft Color: Blue. ProtectEnvironmental. SENTINEL P200 HFB is reinforced with a tenacious, anti-wicking, weft-inserted polyester fabric that is encapsulated on both sides with a proprietary thermoplastic PVC. We'll explore the science behind crawl space liners, assess their durability, and uncover the advantages of thicker options, particularly the 20 Mil. 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. This underlayment has an attached vapor barrier and the added feature of an adhesive strip for easy installation. Apply Clear All Approximate Size Approximate Size 1000sqft 1. If a crack develops in the slab or base material, the barrier’s stress. However, only an air barrier prevents airflow (and the moisture attached to it) into the envelope. S. 2. Accessories & Primers; Membranes. x 6 mil Underlayment for Solid & Engineered Wood Floors & LVP, White. However, the degree by which each moves, and level of control (i. Vapor barriers in new home in North Okanagan, BC Canada. Bridge Deck Waterproofing. Without vapor barriers, your garage can experience the following issues: Wet and moist walls. 3. Final Concrete pour Section 4 The Sentinel barrier requires 3000 psi concrete. These walls are also insulated for sound proofing so even more important to water seal the outer layer from the inner cavity. 36in. Sentinel Systems. Its excellent R-value helps keep the floor more comfortable. 99 / piece Size: 10in. per 1000 sq. All products manufactured by SOPREMA are automatically covered by a limited product replacement warranty. 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. The barrier comes in rolls about twenty-four inches wide. x. This is an ideal building practice in the extreme northern communities of Canada, less so as you come further south. Vapor barriers--called retarders in the industry--resist water vapor movement. Waterproofing Preservation Polishing Epoxy Coatings Traffic Coatings Concrete Prep Vapor Barriers Other Services. It’s possible your crawl space already had a vapor barrier installed, but it proved ineffective in some way. • Do-it-all underlayment provides complete moisture and vapor protection for all flooring types in floating installations. 200sqft 1. SENTINEL® P200. Next, to prevent cold air from entering the crawl space, install R30 Fiberglass insulation into the bond cavity. The purpose of vapour barriers. Check out ECF's 10-in-1 features listed below. 1 Perms IMP or less to be considered “impermeable. 0031 inches thick, and unfaced expanded or extruded polystyrene. Vapor Barrier Vapor Barriers provide. This is where your video banner will be. The barrier has Class I and II (A and C) variants. Accessories & Primers; Membranes. 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. Class I barriers don't allow any amount of moisture to get through. 100% waterproof, mold proof and vapor-resistant Buy from trusted and established brands like Sentinel ;. Backed by unparalleled project and educational support, Stego 15-Mil. DUOTACK SPF HFO Adhesive is a low pressure, two-component spray polyurethane foam adhesive formulated for adhering SENTINEL HFB (heavy fleece back) membranes, insulation and coverboard to approved substrates. Air & Vapor Barriers; Accessories & Primers. $29. The Most Specified Below-Slab Vapor Barrier in North America. The sheets should be overlapped to prevent any seams. However, an installation between the studs can pose a challenge. Q. This misunderstanding arises because air typically holds a great deal of moisture in the form of vapor. 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. About Us. The downside to using a waterproofing membrane is that it's expensive. Sentinel 821 adhesive primer is American made. SENTINEL T-Joint Patches are supplied as 4. Nylon - Suitable for oxygen barrier formulations. Vapor Sentinel New Construction Systems eliminate the need for costly trenching and aggregate backfill with its stronger-than-concrete gas-permeable layer. Vapor Sentinel Vapor Barrier SAFETY SHEET FIRE-FIGHTING MEASURES Suitable Extinguishing Media: Water, Water Mist, Dry Chemical, Carbon Dioxide, and Foam. SENTINEL® P150 SKU: P302, P308. , Silver Chrome (Pack of 2) 4. Offers full-adhering, watertight laps at all joints. Underlayment with 6-mil Vapor Barrier. 99 / piece Size: 100sqft Color: Multi Color. Sentinel Premium Quiet Underlayment. 10 MIL Viper II Barrier 14’ x 210’ for Underslab . We would like to show you a description here but the site won’t allow us. Sentinel Moisture Barrier Polyethylene Film. The overlap should be 4-6 inches. We use high performance plastic sheeting products used in everyday construction, industrial, and agricultural applications. It’s a finish-ready vapor barrier and integrates as. 28665. SENTINEL UNIVERSAL SEALANT is a solvent-free sealant that has excellent adhesive qualities, resilient elastomeric properties and is formulated to bond to most construction materials. $169. Creates a solid adhesive bond with the concrete surface to prevent water migration between the concrete and membrane. 194sqft 1. ft. About Us. Others may desire a warranty crafted to address a particular type of assembly or system. This barrier is ready for finishing. I have a crawl space underneath my house. 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. If possible water should be applied as a spray from a fogging nozzle since this is a surface burning material. The function of a vapor barrier is to retard the migration of water vapor. Elongation, Tongue Tear, Trapezoidal Tear and Load Yield are other tests that can tell you how strong the liner is. In very warm, humid climates such as the Southeastern United States, crawlspace encapsulation is often the most effective way to solve and prevent moisture damage. Plastic on the outer surface of a wall in cold weather could cause problems. ASTM E-1745 defines an A, B and C Class of vapor retarders and most building codes use these classifications. Fasten vapor barrier to wall. 99 / piece Size: 100sqft. Buy from trusted and established brands like Sentinel ; The most affordable underlayment items;. Sentinel XS Radon Vapor Barrier is available in 4’, 8’, 12’ and 20’ widths. 973-506-6550. 94 / piece Size: 100sqft. When it comes to vapor barriers, a true one has an impermeability value of 0. Suitable for all types of subfloor including cement subfloor. ft rolls. It allows the user to create effective methods in detailing PVC-to-metal transitions. Installs easily due to its flexibility to adapt to the job site. The goal of this underlayment is to block vapor and moisture, so an overlapping, tight seal will prevent any moisture damage through the barrier. A durable barrier system that saves on your bottom line. The hole, which is what scientists call an "ozone depleting area," reached a size of 26 million sq km on 16 September 2023. SOPRAVAP’R provides a quick, clean and efficient installation that can be installed on a variety of approved roof decks and roof board substrates. MoistureBlock is a convenient and effective 6mil vapor barrier specifically designed for all floating hard surface flooring where subfloor moisture is a concern. This is roughly three times the size of Brazil. The unique design, including barbs and ribs, provide exeptional uplift support, increased membrane. 3. If you need to over-lap the vapor retarder, 6 inches at the seams, taped and sealed. ft. A thin foam underlayment made of polyethylene or polypropylene usually works best. 00 / piece Size: 194sqft. If a crack develops in the slab or base material, the barrier’s stress. Primers; Field & Flashing Membrane Resins;. Additionally, the overlapped seams can cause some unevenness. Warranty Selections. The cost per gallon is comparable to standard paint. SOPRA-EDGE SENTINEL Fascia features dual attachment. Because of these gaps, water vapor. This video describes the process of installing a moisture barrier over a concrete subfloor. $29. Check out ECF's 10-in-1 features listed below. Also insure that the wedge barrier is set so that the wedge is facing the proper directionSENTINEL P200 HFB is a high-performance, fleece-backed, thermoplastic polyvinyl chloride (PVC) membrane designed for both steep and low slope applications…. Ideal for for all flooring ranging from concrete slab, bamboo, floating and wood floors, or even laminates engineered hardwood! This underlayment is 2mm thick and will provide. The WallSeal™ Vapor Barrier is a durable, 12-mil thick shield crafted to ward off moisture penetration in your basement walls. Vapor barriers restrict the flow of water vapor (diffusion) through materials. Ceiling insulation is an essential part of any home that needs to keep the heat in during winter. Made of a blend of granulated cork and polyethylene foam, the noise-dampening barrier has an IIC rating of 73 and provides advanced sound absorption. Installing the best vapor barriers in your garage walls will significantly reduce moisture problems that might lead to rot and decay. Wrap vapor barrier up edge of wall 3-4 inches and tape to wall. SOPRABOARD is composed of a mineral fortified asphaltic core formed between two fiberglass reinforcing plies. Either roll out a new roll or use a folded over piece that is already cut. 99 / piece Size: 100sqft. Step 4: Install Underlayment. 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. Sheathing provides a necessary structural strength to house frames, but it is written nowhere except in our minds that it has to be on the outside. I have received conflicting advice regarding vapor barriers for crawl spaces. Q. A vapor barrier or retarder must have a permeance of 0. + QEP 62909Q 8" Adjustable Razor Floor Stripper. SENTINEL P200 is a high-performance, bare-backed, thermoplastic polyvinyl chloride (PVC) membrane designed for both steep and low slope applications. 00 / piece Size: 194sqft. It's still leaking. 35 and $2 per square foot, or a total of between $1,500 and $4,000 for labor and materials. FEATURES & BENEFITS MOISTURE PROTECTION 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. This sub-floor barrier slows moisture migration and helps prevent buckling, cupping, and cracking. 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. Barrier Seaming Tape is a low-permeance tape designed to securely connect. Conveniently sized 100 sq. Air & Vapor Barriers; Accessories & Primers. Buy from trusted and established brands like Sentinel ; The most affordable underlayment items;. This is roughly three times the size of Brazil. As I wrote in a recent article on controlling liquid water, the liquid water control layer is also called the drainage plane or the water-resistive barrier (WRB). For peel & stick installation the drier the subfloor the better adhesion for your floor. GREAT VALUE. Stego has several barriers made specifically for crawl space encapsulation. 200sqft 1. x. I looked through, and think it is the section 3. Apply vapor barrier seam tape. Fluid/Liquid-Applied Air & Moisture Barriers. AMERIQUE AMBLPD3M 3-in-1 Heavy Duty Foam 3mm Thick Premium Flooring Underlayment Padding with Tape and Vapor Barrier, 200 Square', Royal Blue, Feet. [8] Air is mixed with water vapor. Sentinel Eco Underlayment. 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. We are your trusted partners in new construction technology. If you’re looking for vapor barriers for your next construction project, Americover can help. I would like to speak with my county inspector about using this approach to make sure I don't have problems during construction. Install vapor barrier on piers or support walls at least 18" above floor. Assuming all other aspects of moisture con-trol are handled correctly, the main influence on the location of the vapor barrier is climate. When using vapor barriers for crawl spaces 6 Mil Vapor Barrier are the bare minimum thickness. 5 inch diameter circles. Air & Vapor Barriers; Accessories. 005 perms, which is still very low. The built in moisture barrier protects your floor against harmful moisture vapor. Moisture in the indoor air can condense on cold surfaces in your basement, forming. 300sqft 3. BEST FOR SOUND INSULATION: Roberts 70-193A Super Felt. Vapor 3-in-1 Blue underlayment is the most budget friendly option of all vapor barrier underlayment. Air & Vapor Barrier Laminated Boards; Air & Vapor Barriers. SOPRAVAP’R®. 100% reinforced. You will be able to grow healthy, strong plants in your greenhouse by keeping mold, mildew, rot, and water damage at bay. x 84T piece Add to Cart. In a basement, it’s likely to cover the walls and possibly the floor, although it’s most common to see these sheets just cover the walls. Wrap vapor barrier up edge of wall 3-4 inches and tape to wall. About Us. 97 (79) Model# 556487. Installs easily due to its flexibility to adapt to the job site. Air & Vapor Barrier Laminated Boards. Vapor barriers prevent moisture from moving from areas with a lot of moisture to areas with less moisture. We can start with a basic building science refresher. Air & Vapor Barriers; Accessories & Primers. A vapor retarder is defined as a material that reduces the rate at which water vapor can move through a material, according to the US Department of Energy. 5 – 1 inch above final roadway grade. 5 mm thick high density XPS foam, this underlayment enhances the performance of your floating floor. 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. SKU: 100586833. 100 sq. x 25. SOPRASEAL LM 202 VP is a one-component spray applied vapor-permeable air barrier membrane used in wall construction. ft. 100sqft 5. Trim around any obstructions or openings and patch with fab tape and seam tape if desired. It effectively protects the concrete slab from moisture entering. x 25 ft. The best part is that it also has a moisture barrier for added protection. The HDX 20 ft.