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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…
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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…
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…
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 2018, 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.…
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…
5 Reasons Your Building Needs a 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…
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…