Koval Building Supplies carries a variety of drainage mats, roofing underlayment products and materials for the application of stucco.
Rainscreen Drainage Mat
Rainscreen drainage mats are used to create a weather resistive barrier and provide additional space for drainage. They also contribute to air circulation and ventilation between exterior finish materials and wall sheathing. A combination of water drainage and air circulation reduces the damaging effects of water penetration into the walls. Rainscreen mats are designed for use with architectural (cultured) and natural stone, traditional stucco and E.I.F.S., fiber-cement and wood based sidings, as well as masonry, metal and other wall cladding materials.
EnkaRain Drain 3511
EnkaRain Drain 3511 is an exterior wall drain product designed for use behind traditional stucco, EIFS, manufactured stone, fiber cement, and metal panel applications. This rainscreen drain provides a drain path and ventilation for incidental moisture between exterior wall finish materials and weather barrier sheathing. 3511 has a unique waffle geometry that combines the benefit of compressive strength according to traditional testing measurements with the spring-like structure of other Enkadrain products. EnkaRain Drain meets Canadian Building Code requirement of 10 mm.
Each roll is 39'' x 100' / 11.43 mm thick / 324 s.f. coverage
• Acrylic (EIFS) and traditional stucco
• Architectural and natural stone
• Metal panels
• Fiber-cement and wood-based siding
Features and Benefits
• Excellent durability
• Continiously ventilates, removing incidental moisture from wind driven pressure differential
• Conforms to irregular surfaces and corners with complete and effective coverage
• Provides 100% coverage of wall area
• Filter fabric assures drain path remains completely clear of stucco or mortar
• Waffle design creates open flow path even at excessive pressures
• Dimensionally stable in hot weather, not britle in cold
EnkaRain Drain 3511 Technical Data Sheet
Intertek Evaluation Report on EnkaRain Drain 3511
GREEN & METAL ROOF UNDERLAYMENT
BONDAR is the fastest growing leader in green roofs technology. The family of products used for drainage and roof reinforcement in multi-layer green roof configuration are Enkadrain 3811R, Enkadrain 3611R & Enkamat 7010.
Enkamat 7008/7010 & Enkamat 7020 is a nylon matrix used for drainage and ventilation in metal, cedar, protected membrane, and ballasted roofing applications. This product is used when a weather barrier membrane has already been placed on the sheathing and a drainage and ventilation layer is needed.