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Low & Bonar · Façade Drainage & Ventilation

Enka WallDrain

Enka WallDrain is a three-dimensional drainage and ventilation layer installed behind cladding, render, and masonry on exterior walls. It moves moisture away from the building envelope and keeps a continuous air gap that helps walls dry and stay protected.

Free shipping, all orders Drainage + ventilation in one layer American made, ISO 9001
Enka WallDrain D 6P1 Plus
Enka WallDrain D 6P1 Plus

Enka WallDrain D 6P1 Plus - 39" x 61.5'

$245.01
Enka WallDrain W 10P1 Plus
Enka WallDrain W 10P1 Plus

Enka WallDrain W 10P1 Plus - 39" x 61.5'

$247.49
Enka WallDrain U 6P1 Plus
Enka WallDrain U 6P1 Plus

Enka WallDrain U 6P1 Plus - 39" x 61.5'

$245.01

Guide

A Practical Guide to Enka WallDrain for Exterior Walls

Exterior walls take a constant beating from rain, wind-driven moisture, and humidity. When water gets trapped behind cladding, render, or masonry, it can lead to staining, efflorescence, freeze-thaw damage, mold, and premature failure of the finish. Enka WallDrain is a drainage and ventilation layer that sits within the wall assembly to give that moisture a fast, reliable way out.

Its three-dimensional core creates an open air gap against the wall. Water that gets behind the finish drains straight down and out at the base, while the same air gap lets the wall breathe and dry — protecting both the structure and the appearance of the façade.

Close-up of Enka WallDrain outer wall drainage and ventilation layer
The 3D core forms a continuous drainage and ventilation gap.

How Enka WallDrain Works

Think of Enka WallDrain as a permanent drainage channel built into the wall. The entangled-filament core holds an open space between the weather-resistant barrier and the exterior finish, so two things happen at once:

Drainage: Any water that penetrates the cladding hits the core and runs down the open channels to a weep or exit point at the bottom of the wall, instead of soaking into the structure.

Ventilation: The same air gap promotes airflow behind the finish, helping the assembly dry out after it gets wet and reducing the trapped humidity that leads to mold and decay.

Enka WallDrain rolled out across an outer wall envelope
Rolled out across the wall envelope before the finish goes on.

Because the drainage and ventilation functions are combined in a single rolled product, there's no need to build a separate furred-out cavity or stack multiple components. The mat installs directly over the barrier and is covered by the cladding or render system, keeping the wall assembly thin and straightforward.

Benefits & Where It's Used

Key Benefits

  • Drains water away from the wall before it can cause damage
  • Continuous air gap lets the assembly dry and breathe
  • Helps prevent mold, efflorescence, and freeze-thaw damage
  • Drainage and ventilation combined in one rolled layer
  • Lightweight, flexible, and easy to cut and roll out
  • Chemically inert and resistant to rot and UV exposure
  • Long service life built into the wall

Common Applications

  • Cladding and rainscreen façades
  • Stucco, render, and EIFS walls
  • Brick and masonry veneer
  • New construction and renovation
  • Residential and commercial buildings
  • Window and opening surrounds
Enka WallDrain installed around an outside window opening
Installed around a window opening on the outer wall.
Enka WallDrain façade drainage and ventilation installation on an outside wall
Façade drainage and ventilation layer on an exterior wall.

Installation Overview

Enka WallDrain installs as part of the wall assembly, over the weather-resistant barrier and behind the exterior finish. The exact details depend on your cladding system, so always follow the manufacturer's instructions and local building code — the steps below are a general overview.

  1. Prepare the wall and barrier
    Make sure the weather-resistant barrier is installed and intact over the sheathing before the drainage layer goes on.
  2. Roll out the WallDrain
    Position the mat with the correct side facing out and roll it out across the wall, trimming to fit around openings.
  3. Fasten in place
    Secure the layer to the wall per the system requirements, keeping the drainage core open and uncrushed.
  4. Detail openings and the base
    Integrate with flashing at windows, doors, and the base of the wall so water can exit freely at the bottom.
  5. Install the exterior finish
    Apply the cladding, render, or masonry veneer over the drainage layer to complete the assembly.
Contractor installing Enka WallDrain on an outer wall
A contractor securing Enka WallDrain to the outer wall.
Building contractor installing Enka WallDrain on the outer building envelope
Installing the drainage layer across the building envelope.

Because the product is lightweight and comes in rolls, a crew can cover large wall areas quickly with basic hand tools. Keeping the core uncrushed and the base of the wall open for drainage are the two details that matter most for long-term performance.

FAQ

What does Enka WallDrain do?
It provides a combined drainage and ventilation layer inside an exterior wall assembly. Water that gets behind the cladding drains down and out, while the open air gap lets the wall dry and breathe.
Where is it installed in the wall?
It goes over the weather-resistant barrier and behind the exterior finish — cladding, render, stucco, EIFS, or masonry veneer.
What finishes can it be used with?
It's commonly used behind rainscreen cladding, stucco/render, EIFS, and brick or masonry veneer on both new construction and renovations.
Where do Enka products ship from?
Enka Solutions products ship from North Carolina.
What is the shipping cost?
All Enka items ship for free.
What are the quality standards of the manufacturer?
These products are American made in an ISO 9001 facility.