Waterway - Rainscreen & Ventilation Mats
"Create Space Between Your Building And The Elements"
WaterWay Rainscreen Drainage Mats consist of a polypropylene core of fused, entangled filaments in varying thicknesses from a nominal 1/4 inch to 3/4 inch, depending on desired cavity space and cladding selection. The core is bonded to a Moisture Resistive Filter Fabric that functions like an additional layer of Weather Resistant Barrier. WaterWay Rainscreen & Ventilations Mats are designed for Stucco, EIFS, Manufactured & Natural Stone, Fiber-Cement, Brick, Lap and Cedar Sidings and other Wall Cladding Systems.
"Affordable - Simple - Effective"See Video Rainscreen Stucco Assembly See Video Rainscreen Stone Veneer Assembly See Video Rainscreen Cement Board Assembly
Specifications And Details
Unique Profiles Accommodate Cladding Selection & Space Requirements
WaterWay 3 mmProduct Data Sheet
WaterWay 3 mm is a nominal 1/8 inch / 3mm thick drainage product consisting of a polymer core of fused entangled filaments bonded to a moisture resistant filter fabric on the outer surface. WaterWay 3mm is designed for use with manufactured and natural stone, traditional and one coat stucco, EIFS, fiber-cement, wood based sidings, masonry, metal and other wall cladding materials. This rainscreen product provides an uninterrupted drainage path & ventilation for incidental moisture between exterior finish materials and wall sheathing. Applications for roofing and below grade drainage.
WaterWay 7 mmProduct Data Sheet
WaterWay 7mm is a nominal 5/16 inch /7 mm thick drainage product consisting of a polymer core of fused entangled filaments bonded to a moisture resistant filter fabric on the outer surface. WaterWay 7mm is designed for use with manufactured and natural stone, traditional and one coat stucco, EIFS, fiber-cement, wood based sidings, masonry, metal and other wall cladding materials. This rainscreen product provides an uninterrupted drainage path & ventilation for incidental moisture between exterior finish materials and wall sheathing. Applications for roofing and below grade drainage.
*** Filter Fabric Exceeds AC -38 Acceptance Criteria for Weather Resistive Barriers ***
WaterWay 11mm is a Vertical Wall Rainscreen Drainage Mat consisting of a nominal 7/16 inch / 11mm thick extruded polymer matrix of tangled monofilaments. The monofilaments are heat laminated to an impenetrable, breathable, filter fabric on one side. WaterWay 11mm is designed for use with manufactured and natural stone, traditional and one coat stucco, EIFS, fiber-cement and wood based sidings, masonry, metal and other wall cladding materials. This rainscreen product provides an uninterrupted drainage path & ventilation for incidental moisture between exterior finish materials and wall sheathing.
WaterWay 19 mmProduct Data Sheet
WaterWay 19mm is a nominal 4/5 inch / 19mm thick drainage product consisting of a polymer core of fused entangled filaments bonded to a moisture resistant filter fabric on the outer surface. The product is designed for use with manufactured and natural stone, traditional and one coat stucco, EIFS, fiber-cement, wood based sidings, masonry, metal and other wall cladding materials. This rainscreen product provides an uninterrupted drainage path & ventilation for incidental moisture between exterior finish materials and wall sheathing. * Meets Canadian Code Requirements for Rainscreen *.
WaterWay 19 MDProduct Data Sheet
WaterWay 19MD is a nominal 4/5 inch / 19mm thick Mortar Deflection System that enhances moisture drainage and ventilation in masonry construction. The product consisting of a polymer core of fused entangled filaments. This filament matrix design prevents mortar droppings from blocking and clogging at the base walls and/or head joint drainage channels. This deflection system to insure an uninterrupted drainage path is achieved that also contributes to air circulation & ventilation. Depending on design requirements WaterWay11MD can accommodate cavities of less than 1inch up to 2 inches thick. Simply install a single layer for thinner cavities or double into a "U" configuration for wider space requirements.
Features & Benefits:
"America's Only Rainscreen with Water Resistant Filter Fabric"
Moisture Resistant Filter Fabrics
- Ensures a Clear Drainage Path
- Supports Uniform Thickness in Stucco / Mortar
- Enhanced Key or grab of Stucco / Mortar to Lath
- Distributes Point Load Compression in Siding Material Applications
- Keeps Wet Cladding Away from Weather Resistive Barriers
- H2O vapor transfer in 12 minutes
- 96 hours no water passed through the membrane
- Equal to 4 Days
- 10cm / 18 hours
- 3.5" equal to a 70 mile an hour wind
- Passes section 4.2.2 Ponding Water Test
- Approved CCMC method
- Exceeds 247 Perms
Drainage Mat Core:
Creates Space (varying thicknesses)
Provides Rigidity / Compressive Strength
Creates Cushion Between Building & Cladding Assembly
90% Open Space within Cavity
WaterWay Rainscreen Benefits:
- Creates Separation between your building and exterior cladding
- Forms a space for water Drainage
- 50 times Faster Draining Water than Claddings attached direct to WRB
- Test Compared Wrinkled House-wrap vs. WaterWay Rainscreen
- Warm moist air rises and escapes out the top while
- cool dry air is introduced at the bottom
- Moisture Protection – Keeps building dry
- Non-Chambered Cavity unlike Strapping or Furring Systems
- Reduces Stress & Cracks particularly in Stucco & Stone
- Easy to Detail, No furring of Windows / Doors / etc...
- Fasten using Hammer Staple (gypsum, wood substrates)
- Cost vs. Alternative methods - Furring / Strapping
WaterWay Drainable Stucco Assembly
- Substrate / Sheathing
- Weather Resistive Barrier (WRB)
- Therm-Flash (peel & stick) - optional
- WaterWay Rainscreen Drainage Mat
- Scratch & Brown Coat (stucco)
- Base Coat & Reinforcing Mesh - optional (PRM or Stuc-O-Base)
- Stuc-O-Flex Elastomeric Acrylic Finish or Europlast / Euroseal
ICC / IRC Code Mandates:
Exterior wall envelopes are required to be weather-resistant and provide a means for draining water that enters the assembly.
Healthier Walls Through Rainscreen & Ventilation
"Create Some Space Between Your Building And The Elements"
Fundamental theory in cladding integrity prevents liquid water from penetrating vertical walls, ideally through appropriate materials selection, architectural detailing and professional installation consistent with specifications and construction documents.
Unfortunately, we can all attest to the increased frequency of problems arising from water infiltration and deterioration in exterior envelopes. Particularly, wood framed buildings constructed to more stringent codes appear increasingly susceptible to problems unlike older, drafty and uninsulated walls built decades ago. Avoiding deterioration in older buildings is not a consequence of better resistance to water intrusion, but rather a better ability to dissipate moisture. Forensic evaluations note compromise from moisture penetration increase significantly if water is unable to evaporate or drain, causing accelerated consequential damage. Absent perfect design, execution, materials performance and continued maintenance, inevitably problems can develop.
If we are more susceptible to decay, let's consider requirements for mold / fungi growth:
- Spores – Present everywhere.
- Temperatures - Generally above 40 degrees F.
- Food Source – Most organic materials including wood and paper.
- Oxygen – Even with low permeance building materials.
- Water – Varies by species, growth occurs at levels between 20% - 40%.
Depending on project location and climate, the moisture content of even protected building products may fluctuate at levels just below the minimum required for fungal growth. And if one considers four of the five elements needed for mold development are inevitably present at all times, even a small amount of additional water can result in decay, causing deterioration.
If modern construction techniques reduce water vapor diffusion and agree moisture will likely penetrate outside walls, it is important to incorporate a defensive strategy to mitigate the effects of water intrusion and prevent rot.
"Create That Space Through Vertical Wall Drainage Mats"
WaterWay Rainscreen Drainage Mats provide that additional space for drainage. They also contribute to air circulation and ventilation when properly designed. The combination of water drainage and increased air flow will enhance drying and in turn reduce the damaging effects of water penetration. Building papers and house-wraps are well established in providing some protection against substrate damage. Traditional barriers offer a marginal safeguard, but they do not provide an adequate path for drainage. With siding materials tightly installed against weather resistive barriers, opportunities for drainage and ventilation can be inadequate or even blocked.
ICC and IRC Mandate:
"Exterior wall envelopes are required to be weather - resistant and provide a means for draining water that enters the assembly"
Engineers and designers are exploring various configurations to accommodate the code and remove water from the exterior walls while incorporating some mechanism of ventilation. Enhancing air flow and managing entrapped moisture make sense; the challenge lies in a simple, efficient and cost effective approach.
From Boston to Seattle, WaterWay drainage mats are finding acceptance with some of the most recognized and distinguished building enclosure specialists in North America. In both new construction and cases of cladding remediation, Drainage Mats accommodate essential criteria in today's construction environment.
"WaterWay Drainage Mats" consist of a Nylon / Polymer core of fused, entangled filaments in varying thicknesses from a nominal ¼ inch to ¾ inch depending on desired cavity space and cladding selection. Certain profiles are available with America's only moisture resistive filter fabric bonded to one side, or consider WaterWay Plus our "Patent Pending" three layer product that creates a code compliant weather resistive barrier (NER-660, CCMC-12892R) and rainscreen in a single application. WaterWay" Rainscreen mats are equally effective for stucco, EIFS, manufactured & natural stone, fiber-cement, brick, standard lap and cedar sidings and other wall system materials.
This technique achieves desired results with limited additional expense. WaterWay Rainscreen Mats run as little as $.65 a square foot for materials. With varying labor rates it's difficult to offer a specific cost, although it should not be more that $.95 - $1.50 (labor & materials) per foot. With over 60 million feet in service and an exponential increase in demand, you can feel confident in this effective approach.
For additional information on "WaterWay Rainscreen Drainage Mats" including product data sheets, profile samples, test reports, detail drawings, specifications and an animated DVD presentation.
Note: Surfactants present in some siding materials may decrease water resistance of the secondary moisture barrier if direct contact occurs
WaterWay Drainage Mats in Roofing Applications
Galvanized metal roofing (zinc coated) is common in commercial building and especially susceptible to corrosion. In any climate, moisture can build up under the roof and cause damage to the structure. WaterWay mats can be incorporated as a spacer between the metal and roof sheathing providing a passage for moisture drainage while reducing water accumulation which causes corrosion. In cold weather, a cold roof surface is desirable to prevent the build-up of ice and the problems associated with ice dam backup. WaterWay mats create a thermal break and ventilation layer in the roof where the conduction of heat would normally occur. This characteristic reduces the potential for ice dams.
"Need a vent layer in commercial roofing?"
For many designers the need for a ventilation layer between the roofing shingle or membrane and the insulation has become a standard technique to ensure that moisture does not build up beneath the sheathing. Furring is an expensive way of spacing the insulation from the sheathing and limits ventilation to one direction. This system can now be replaced by a single layer of WaterWay Rainscreen Mat designed to reduce roof top temperatures while providing maximum insulation efficiency. The mat is rigid enough to support the full weight of the roof and its open structure allows for multi-directional ventilation. For the contractor, the installation of this lightweight product is easy and quick.