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AIR-SHIELD LM liquid membrane air, vapor, and liquid moisture barrier is a single-component, liquid-applied, water-based, polymer-modified membrane. AIR-SHIELD LM can be applied to most common smooth or rough surfaces in need of a monolithic, seamless membrane and can be integrated into various restoration and new construction wall systems, including green concrete. A new video about AIR-SHIELD LM is now available to view and download through our website. This video discusses the features and benefits of AIR-SHIELD LM as well as visually demonstrating how to properly apply this membrane. The superiority of a product is only as strong as the quality…
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Case Study featuring the Minneapolis Veterans Home
When the Minneapolis Veterans Home in Minnesota was in their final stage of its multiple phase, 8-year renovation project, W. R. MEADOWS was proud of the role it played in updating and modernizing Building #22, the 141,800 square foot building comprised of 100 private veterans living quarters, a new skilled nursing facility, resident great rooms, a putting green, and many more sought-after amenities. After using W. R. MEADOWS’ MEL-ROL in the past, Todd Smiley, a project manager at Exterior Building Services (EBS) who was in charge of the installation of air barriers throughout every phases of the Minneapolis Veterans Home…
Required Reading: W. R. Meadows Waterproofing Handbook
Our waterproofing handbook is a great resource for contractors looking for application information on the wide line of waterproofing materials available from W. R. Meadows. This detailed, informational handbook has been recently updated and includes the most up-to-date information on such popular concrete waterproofing products as Mel-Rol, Precon, and Hydralastic 836. The waterproofing handbook covers our entire waterproofing line, and is complete with product descriptions, architectural CAD details, and application instructions. It’s a great tool for contractors as well as architects to see how W. R. Meadows products fit into everyday and unique application situations. The waterproofing handbook, along with…
Choose Perminator EVOH to Effectively Block Vapor and Gas
Our PERMINATOR EVOH is a fantastic solution for underslab installations where blocking harmful gases in the soil is vitally important to the overall performance of the structure. Introduced in 2017, PERMINATOR EVOH has been used throughout North America in many successful projects where a gas barrier is needed. PERMINATOR EVOH is a seven-layer co-extruded barrier manufactured from state-of-the-art polyethylene and EVOH resin and is specifically designed for brownfield sites. PERMINATOR EVOH provides superior resistance to gas and moisture transmission. PERMINATOR EVOH is a highly resilient underslab barrier designed to restrict gases, such as gasoline, solvents, oils, and hydrocarbons from migrating…
Recently Updated PERMINATOR Video Now Available
W. R. MEADOWS’ PERMINATOR 10 and 15 Mil underslab vapor barrier is a highly effective and economical choice to reduce unwanted moisture and water infiltration. Minimize the potential for fungus, mildew and mold growth with PERMINATOR as well as the risk of radon intrusion. PERMINATOR’s polyolefin-based resin/chemical technology offers high puncture resistance with one of the lowest perm ratings available. In order to assure PERMINATOR lives up to its impressive potential, proper installation is essential. PERMINATOR comes to life in a new and improved video now available to view and download through our website. This handy reference offers a product…
What is Window and Door Flashing and Why Do I Need It?
Planning on having a complete, properly-sealed, and void-free building envelope? Even if everything it perfectly planned and executed, your barrier will still end up with giant holes we more commonly refer to as doors and windows. This is where flashing becomes necessary to properly seal around these unavoidable barrier disruptions to prevent wood rot, mold, structural damage, or insect infestation. Flashing is a thin layer of waterproofing that eliminates upward facing seams, crevices, gaps, or spaces where moisture could collect and seep past the barrier. Proper flashing ensures a seamless, shingled waterproofing surface that will not interfere with the force…
How to Install an Effective Underslab Gas Vapor Barrier
When superior resistance to gas and moisture transmission is of upmost importance, the performance of the vapor barrier is only as effective as how well it was installed, no matter the quality of the product. W. R. MEADOWS’ PERMINATOR EVOH is a highly resilient gas/vapor barrier designed to restrict naturally occurring gases from traveling through the ground and into the concrete structure above. When properly installed, PERMINATOR EVOH is an effective barrier against radon, methane, solvents, oils, and hydrocarbons. To ensure the ability for PERMINATOR EVOH to show its strength, step-by-step directions in the form of installation guidelines are available…
Precon from W. R. Meadows is your moisture protection solution.
The effectiveness, overall efficiency, and hiqh quality of PRECON, W. R. MEADOWS’ pre-applied/underslab waterproofing membrane, is demonstrated by the fact that architects and contractors continue to trust it for their biggest projects. For 2019, consider PRECON for all your building envelope construction projects, especially ones that require an effective vaporproofing and waterproofing membrane. PRECON is used as a blindside membrane in vertical applications where access to the positive side is limited. The membrane can also be used for horizontal applications for underslab waterproofing and vaporproofing. It is a composite sheet membrane comprised of a non-woven fabric, elastomeric membrane, and W. R.…
How to Repair a Building Envelope Barrier Membrane
A lot of time, money, and effort goes into achieving a leak-free building envelope. Tears, punctures, air blisters, and fishmouths can interrupt the continuity of a barrier in an otherwise properly installed membrane. Accurately repairing these disruptions is essential to achieve the proper bond of a self-adhering barrier membrane. W. R. MEADOWS offers a repair procedure technical bulletin which outlines the steps needed to accomplish repairs needed to maintain the integrity of AIR-SHIELD, W. R. MEADOWS’ high quality self-adhering air/vapor and liquid moisture barrier option. These instructions are also available in a convenient PDF that can be saved to a…
How to properly install a underslab / blindside waterproofing / vaporproofing membrane
While choosing the correct waterproofing/vaporproofing membrane is important to achieve a successful barrier in any underslab or blindside application, proper installation is imperative to avoid costly and time-consuming repairs if failures occur. W. R. MEADOWS recommends using PRECON pre-applied underslab/blindside waterproofing membrane for vertical and horizontal applications when access to the positive side of the concrete is restricted. Prior to applying PRECON, proper surface preparation is necessary to ensure the surface is structurally sound and all objects are removed that may cause damage to the membrane. Use of MEL-DRAIN is recommended to be used with PRECON to assure proper site…
Winter is Coming, but PRECON can Handle it
Labor Day marks the end of summer and colder weather is just around the corner, but don’t let the changing of the seasons inhibit construction plans. PRECON underslab membrane offers a tough blindside waterproofing solution and is able to prevent moisture infiltration and reduce methane and radon gas invasion even in low temperatures. PRECON’s seven-layer matrix designed to mechanically bond to concrete once it cures can be installed in temperatures down to 40°F (5°C). PRECON LOW TEMP is recommended for environments where the temperature is between 60° F (16° C) and 25° F (-4° C). To assist with effective installation,…
Reduce moisture and water vapor effectively with proper PERMINATOR installation
PERMINATOR underslab vapor barrier with polyolefin-based resin/chemical technology offers one of the lowest perm ratings available combined with the additional benefit of considerable puncture resistance. PERMINATOR helps protect structures from fungus, mildew and mold growth by reducing moisture and water vapor infiltration through the concrete slab. PERMINATOR also restricts radon gas from entering the building. As important as it is to choose the correct vapor barrier, proper installation is key to ensure effective protection. To assist in application, installation instructions are available. These guidelines cover typical PERMINATOR applications including penetration detail procedures and how to patch holes. A PDF version…
Ensure a seamless building envelope with the proper application of AIR-SHIELD
AIR-SHIELD self-adhering moisture barrier offers a strong and durable option to prevent unwanted air, vapor, and liquid infiltration through the building envelope. This roll-type membrane allows for guaranteed consistent coverage and will adhere to most primed surfaces at minimum temperature of 40° F (4° C). AIR-SHIELD’s self-healing characteristics offer excellent puncture resistance from self-tapping screws or nails during installation. To help with the proper techniques to treat rough openings with AIR-SHIELD, we offer a detailed guide that covers several suitable detailing options. It’s important to install a transition membrane over every rough opening accurately to secure a tight, dependable building…
5 Reasons Your Building Needs a Below-Slab Vapor Barrier
There is much debate over the role and merit (as well as need) for vapor barriers within varied sects of the construction industry—however, there is a simple truth no matter what side of the discussion you happen to find yourself on. Ultimately, the systems under your building and above the concrete slab need protection, too, and simply leaving HVAC systems, wiring and plumbing, or the framework itself exposed offers far too much room for error—and seriously tempts Murphy’s Law. There is no sense in leaving the fate of your building up to chance, because let’s face it—damage can occur above…
Learn more about PERMINATOR EVOH, our Newest Underslab Gas Vapor Barrier
PERMINATOR EVOH, W. R. MEADOWS’ most recent addition to its extensive vapor barrier line, offers a strong gas barrier membrane option that is durable and efficient in preventing contaminates in the soil from penetrating the structure. PERMINATOR EVOH’s seven-layer co-extruded barrier manufactured from state-of-the-art polyethylene and EVOH resin is specifically designed for brownfield sites to restrict gases, such as gasoline, solvents, oils, radon, methane, and hydrocarbons from migrating through the ground and into the concrete slab. EVOH also provides superior resistance to moisture transmissions. PERMINATOR EVOH efficiently resists gas and moisture migration as a part of passive or active building…
AIR-SHIELD TMP for Thin yet Durable Air Barrier Protection
As part of W. R. MEADOWS’ fluid-applied air barrier line, AIR-SHIELD TMP offers a thin air and liquid resistive barrier formulated to allow vapor to pass through it. AIR-SHIELD TMP is a great choice when the application does not require a thicker barrier. This single-component, water-based air barrier cures to form a tough, seamless, elastomeric membrane that has been fully tested to comply with all of the performance requirements for an air and water resistive barrier. AIR-SHIELD TMP may be applied to most common rough or smooth surfaces and integrated into various new construction and retrofit wall systems. AIR-SHIELD TMP…
Ensure a Dependable Building Envelope with AIR-SHIELD LSR
When versatility, simplicity, durability, and cost-efficiency are all top priorities for choosing the proper barrier for your building envelope project, look no further than AIR-SHIELD LSR from W. R. MEADOWS. AIR-SHIELD LSR offers a fluid-applied liquid synthetic rubber barrier option capable of air, water, and vapor protection. AIR-SHIELD LSR possesses many fluid-applied material benefits, such as ease of application, seamless protection, and superior performance. AIR-SHIELD LSR is appropriate to use on most common surfaces, various wall systems, and suitable for both new construction and restoration. Non-toxic and with low VOC content, AIR-SHIELD LSR is environmentally compatible, produces no harmful odors,…
AIR-SHIELD LMP Air and Liquid Moisture Barrier Offers Tough Resistance Combined with Vapor Permeance
AIR-SHIELD LMP water-based air and liquid moisture barrier cures to form a tough, seamless, elastomeric membrane specifically formulated to allow vapor to pass through it. Its high permeability allows the transmission of water vapor, while exhibiting excellent resistance to air leakage. AIR-SHIELD LMP’s versatility offers superior adhesion to most common new construction and retrofit applications even when applied over damp surfaces. AIR-SHIELD LMP’s water-based formula features low VOC content allowing for simple, safe application and easy cleanup. Use nails and fasteners without compromising performance with AIR-SHIELD LMP’s self-sealing functionality. AIR-SHIELD LMP comes in standard gray which is UV resistant up…
AIR-SHIELD LM Air, Vapor and Liquid Moisture Barrier for Tough, Seamless Resistance
When excellent resistance to air and moisture transmission is a must, AIR-SHIELD LM single-component, liquid-applied, water-based, polymer-modified moisture barrier is there to inhibit unwanted air, vapor, and liquid intrusion. AIR-SHIELD LM is versatile and suitable for new construction and restoration applications in various wall system integrations. AIR-SHIELD LM is non-toxic and user friendly, allowing for safe application and easy cleanup. Sprayable AIR-SHIELD LM offers excellent adhesion, capable of being firmly bonded to large spaces even when applied over damp surfaces or green concrete, providing an economically efficient solution. We offer specific application instructions to assist with ease of use, including…
Need effective cementitious waterproofing protection? Choose CEM-KOTE FLEX ST.
Looking for an effective cementitious waterproofing product? CEM-KOTE FLEX ST is the answer! W. R. MEADOWS offers this product, along with a series of cementitious waterproofing products, through our exclusive partnership with Gemite. The key product in this line is CEM-KOTE FLEX ST. CEM-KOTE FLEX ST is a highly flexible, fiber-reinforced, breathable, cementitious slurry, consisting of dry Component A and liquid Component B. CEM-KOTE FLEX ST is designed for positive and negative waterproofing of concrete structures in new construction and restoration. It is suitable for water and wastewater tanks, secondary containment structures, tunnels, concrete slabs, balconies, and patios with light…
Reduce moisture and water vapor infiltration with PERMINATOR
If your project is in need of an economical yet highly effective underslab vapor barrier, look no further than PERMINATOR. PERMINATOR offers polyolefin-based resin/chemical technology which significantly increases puncture resistance while maintaining one of the lowest perm ratings available. The use of PERMINATOR will help reduce fungus, mildew and mold growth as well as decrease radon gas infiltration into any building structure. W. R. MEADOWS offers PERMINATOR in two thicknesses, 10 mil and 15 mil options. Both versions are available in 200’ long rolls which unroll efficiently for quick installation and require fewer seams during application. For superior protection, PERMINATOR…
AIR-SHIELD LIQUID FLASHING for Rough Opening Detailing
When rough openings and detail joints between exterior gypsum boards are in need of detailing, AIR-SHIELD LIQUID FLASHING is the general-purpose, wet flashing membrane needed for the job. This high-quality, gun grade flashing and detailing membrane by W. R. MEADOWS is low-odor, elastomeric, polyether, and compatible with the entire line of AIR-SHIELD air, vapor, and liquid moisture barriers. Perfectly designed for window and door flashing applications, AIR-SHIELD LIQUID FLASHING will not harm foam insulation. AIR-SHIELD LIQUID FLASHING is tough and versatile, able to be applied in damp conditions, bonds to most construction materials, and will not peel back when left…
Our Hawkesbury District & General Hospital (HGH) case study is now available!
Our Hawkesbury District & General Hospital (HGH) case study describes the problem and solution when the new additions to the structure were designed and built. This case study is a great way to learn more about how W. R. Meadows products were used to waterproof this large project. When the Hawkesbury District & General Hospital (HGH) decided to build two large additions to its community hospital in Hawkesbury, Ontario, Canada, construction officials knew there was a big problem to solve. Below ground level was a substrate composed of solid rock with gravel on top. That meant there was no…
Russell Snow to Detail W. R. MEADOWS’ Air Barrier Performance at Pittsburgh Conference
W. R. MEADOWS’ Building Envelope Product Group Manager and Building Science Specialist Russell Snow will be featured in a panel discussion on liquid-applied air barriers during the one-day Materials Selection Conference in Pittsburgh on September 26. The event, hosted by Durability + Design magazine, is titled “Building Wall Coatings, Water Repellents and Liquid-Applied Air Barriers.” Snow currently serves as Chair of the Air Barrier Association of America and is a member of the ASTM E06, ASTM D08, and American Concrete Institute committees. He has also been involved for a number of years with Construction Specifications Canada and is currently involved…
W. R. MEADOWS hosts ABAA Installer Training Course
W. R. MEADOWS was very pleased to host an Air Barrier Association of America (ABAA) installer certification training course at our location in Hampshire, Illinois for 15 contractors from across the country. ABAA is the national voice of the air barrier industry, setting a high standard for building envelope excellence through their Quality Assurance Program. ABAA President Russ Snow is also Building Science Specialist at W. R. MEADOWS. This 3-day training program, taught by Peter Spafford, the Director of Quality Assurance from the ABAA, focused on both theory and practical instruction for self-adhered and fluid applied air barriers. The classroom…
PRECON Underslab Membrane for Waterproofing and more
When tough underslab waterproofing is needed, PRECON membrane is the product for the job. Prevent moisture infiltration, reduce methane and radon gas invasion, and create a barricade against termites with the addition of PRECON into your construction project. PRECON is made up of non-woven fabric, elastomeric membrane, and a plasmatic core that is exclusively patented by W. R. MEADOWS. PRECON offers the lowest water vapor transmission rating available with its exceptionally tough seven-layer plasmatic core. A mechanical bond is formed between cured concrete and PRECON to ensure the membrane is sealed to the concrete for long-lasting protection. PRECON is ideal…
ABAA Conference: April 18th-20th
ABAA Air Barrier Association of America will be hosting their 6th annual Conference & Trade Show this Tuesday through Thursday, April 18th-20th, in Reston, VA. This conference provides three days of comprehensive learning taught by some of the most innovative minds in building science with a focus on air barriers and building airtightness. Come visit W. R. MEADOWS at booth number 4 to see our Air Barrier products and speak with our experienced sales personnel. W. R. MEADOWS offers quality air barrier protection with our AIR-SHIELD air barrier line. W. R. MEADOWS’ own AIR-SHIELD has completed the ABAA evaluation process…
Our Interview with Masonry Magazine
At W. R. MEADOWS, we’re proud to be a part of relevant construction-related associations and agencies. We feel that being active members of these communities allows us to see all issues in the field and allows us to be a part of conversations as we progress in the many areas of construction, architecture, and engineering. One of the associations we work with the closest is the Air Barrier Association of America (ABAA). The association seeks to raise the standard of proficiency in the air barrier industry through the ABAA On-Site Quality Assurance Program, based on the principles outlined in ISO…
Protect your structure from harmful Radon
Radon is a naturally occurring radioactive gas that is formed by the breakdown of uranium in soil, rock, and groundwater. It is a colorless and odorless gas that moves freely through the soil and in enclosed spaces, such as buildings, it can accumulate resulting in high concentrations. Radon can enter buildings through cracks in foundation walls and floors, and any gaps around pipes and cables. Radon exposure is known to cause an increased risk of developing lung cancer and is the second leading cause of lung cancer behind smoking. As a result, maximum exposure limits have been established around the…
Check out our AIR-SHIELD LSR promotional flyer!
If you’re a seller, specifier, or installer of AIR-SHIELD LSR, we have a new item for your construction material collateral – our new informational flyer. This flyer features full-color photos and product information for our AIR-SHIELD LSR liquid membrane air/vapor and liquid moisture barrier. AIR-SHIELD LSR (liquid synthetic rubber) is an asphalt-free, single-component, synthetic rubber based liquid air/vapor and liquid moisture barrier. AIR-SHIELD LSR cures to form a tough, seamless, elastomeric membrane, which exhibits excellent resistance to air and moisture transmission. AIR-SHIELD LSR has been specifically formulated to act as an air/vapor and liquid moisture barrier within the building envelope.…
MEL-DRAIN CAD Details Now Available!
MEL-DRAIN continues to be one of our most popular materials for diverting water away from a building’s foundation. MEL-DRAIN is a dimple-raised, molded polystyrene sheet bonded to high strength polypropylene fabric. This geocomposite allows the passage of moisture through the fabric while preventing fine soils from entering the drainage channel. Various drain designs are available, depending on soil pressure and flow specifications. (An optional polyester backing film is available when used in conjunction with flexible waterproofing material.) The family of MEL-DRAIN products provides excellent protection in vertical, horizontal, and site applications. Used in conjunction with a total W. R. MEADOWS…
Case Study featuring Kalahari’s Indoor Waterpark renovation
When Kalahari Resorts & Conventions in Pennsylvania’s Pocono Mountains was in urgent need of a tough waterproof material that could hold up to a harsh winter construction environment after a previously chosen product wasn’t able to meet the temperature requirements needed to not delay the renovation deadline, John Rakus, Estimator for EDA, reached out to Tim Durso with W. R. MEADOWS. Tim was able to immediately recommend MEL-ROL waterproofing membrane for the project. Jason Sorci, Partner/CFO of Architectural Design Consultants, Inc., had no problem approving the product switch to MEL-ROL after hearing about its flexibility, versatility, and dependable nature. During…
W. R. Meadows makes AIR-SHIELD TMP samples available
We are back at it again – making adjustments on the fly to better serve our customers. We’ve recently added yet another product to our growing inventory of samples: AIR-SHIELD™ TMP. AIR-SHIELD TMP is a water-based air/liquid moisture barrier that cures to form a tough, seamless, elastomeric membrane. It exhibits excellent resistance to air leakage. Furthermore, when properly applied as a drainage plane, it prohibits liquid water intrusion into the substrate. This product, part of our AIR-SHIELD is formulated to act as an air and liquid moisture barrier, allowing vapor to pass through it. It may be applied to most…
Request HRM 714 Samples Today!
Meet HRM 714. This hot-applied continuous elastomeric membrane is ideal for waterproofing bridges, parking, plaza, or promenade decks; tunnels; pedestrian concourses; and similar types of construction where a monolithic waterproofing membrane is desirable. HRM 714 is an incomparable combination of toughness and low temperature flexibility. It has very low absorption and vapor permeance and its unique formulation effectively prevents degradation of the rubber content by overheating. Because it’s hot-applied, HRM 714 has exceptional self-healing and crack bridging properties and can adhere to virtually any surface. The monolithic rubberized asphalt compound forms a strong, flexible seamless waterproofing membrane that provides a smooth and durable waterproofing protection. Not…
Available now: Air-Shield TMP installation guidelines
Another in the W. R. Meadows line of Air-Shield products is our Air-Shield TMP, a water-based air/liquid moisture barrier that cures to form a tough, seamless, elastomeric membrane. Air-Shield TMP exhibits excellent resistance to air leakage. Furthermore, when properly applied as a drainage plane, it prohibits liquid water intrusion into the substrate. Air-Shield TMP is formulated to act as an air and liquid moisture barrier, allowing vapor to pass through it. It may be applied to most common surfaces and integrated into various wall systems. Air-Shield TMP is versatile in that it is suitable for both new construction and retrofit…
Read our new Airbus case study!
The first-ever Airbus manufacturing facility in the U.S. was waterproofed using products from W. R. Meadows. We’re proud of this fact and our newest case study relays the facts in this unique application. One of the biggest hurdles to overcome was the fact that the site of this project, Mobile, Alabama, is the rainiest city in the U.S. Obviously, high quality waterproofing materials were needed to ensure that moisture did not intrude the structure and the architect and contractor team decided upon our Precon, Perminator, and Mel-Drain products. As the September 2015 grand opening of the Airbus plant – which…
Add our Precon brochure to your product literature
Construction materials gain reputation chiefly by their reliability – how well they do their job, and their durability – how long they do it. Those reasons, and others, are why so many architects, engineers, contractors and distributors continue to choose and rely on Precon, our pre-applied/underslab waterproofing membrane. As such, we need to do our best to educate and inform in ways that are transparent and simple for you, the customer. With that in mind, we’ve rolled out a new brochure to better assist! Our new Precon brochure is multi-faceted: not only does it show off the benefits of the…
Check out our new Precon video!
The effectiveness, overall efficiency, and hiqh quality of Precon, W. R. Meadows’ pre-applied/underslab waterproofing membrane, is demonstrated by the fact that architects and contractors continue to trust it for their biggest projects. In order to better assist with the application of the product, we’ve recently launched a Precon video. This video was recently released to inform and educate on the product and its ease of installation, help guide you through your installation, and discuss what other W. R. Meadows products Precon works in conjunction with. Precon is used as a blindside membrane in vertical applications where access to the positive…
Our New AIA Presentation on Controlling Moisture Movement Is Now Available!
At W. R. Meadows, educating the community on best practices and available technology is important to us. To educate our clients and help them learn more about the construction industry, we have several different American Institute of Architects (AIA) accredited continuing education lunch-and-learns available. These courses are a fantastic way to earn continuing education for your firm to keep up your AIA accreditation while also learning more about the construction industry, adding to your knowledge base and arming you with more information, allowing you to do your work better. We recently rolled out a new AIA-accredited presentation to pass on…
Check out our new AIR-SHIELD LMP animation!
We’re proud to offer a new installation animation for our AIR-SHIELD LMP air barrier! This installation animation shows the proper application of the product with the use of our AIR-SHIELD LIQUID FLASHING for rough openings, such as windows. AIR-SHIELD LMP is a water-based air/liquid moisture barrier that cures to form a tough, seamless, elastomeric membrane. AIR-SHIELD LMP exhibits excellent resistance to air leakage. When properly applied as a drainage plane, AIR-SHIELD LMP prohibits liquid water intrusion into the substrate. AIR-SHIELD LIQUID FLASHING is a high-quality, gun grade, low-odor, elastomeric, polyether, liquid-applied flashing and detailing membrane. It bonds to most construction…