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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…
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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…