Henry WP200 Waterproofing Membrane

Home Concrete & Cement Henry WP200 Waterproofing Membrane

Henry WP200 Waterproofing Membrane

Henry WP200 is a high-performance waterproofing membrane engineered for below-grade applications, offering advanced moisture protection for foundations in residential, commercial, and industrial settings. This elastomeric sheet membrane is specifically formulated to provide a flexible, continuous barrier against water infiltration and hydrostatic pressure — even in the most demanding conditions.

The product’s cold-applied nature makes it safer for job sites, eliminating the need for torching or hot applications. Installers benefit from reduced labor time and fewer callbacks, while property owners enjoy long-term peace of mind against leaks, mold, and costly repairs.

Composed of rubberized asphalt laminated to a cross-laminated polyethylene film, the Henry WP200 system delivers exceptional adhesion, durability, and protection against environmental stressors. Whether it’s new construction or retrofit waterproofing, WP200 is a trusted solution for long-lasting performance.

Benefits

Superior Waterproofing: Henry WP200 provides a seamless waterproof layer that resists both lateral and vertical water penetration, effectively reducing hydrostatic pressure on foundation walls.
Flexible and Durable: With elongation properties exceeding 500%, the membrane adapts to minor foundation shifts, settling, and cracking without compromising integrity.
Cold-Applied Technology: No flame required. The membrane is applied using a cold adhesive, ensuring a safer, cleaner job site while minimizing installation risks.
Self-Healing Capability: The rubberized asphalt formulation has self-sealing properties that close around nails and minor punctures, maintaining waterproofing performance.
Puncture and Tear Resistance: The high-strength polyethylene film reinforces the membrane to withstand backfill and soil movement common in Canadian climates.
VOC-Compliant and Low Odor: Formulated for environmental and workplace safety, Henry WP200 meets VOC regulations and is safe for use in enclosed construction zones.

Properties

FUNCTION: Waterproofing membrane and protective barrier for substructure systems.
PRODUCT ROLE: Below-grade moisture control for foundations, basements, and retaining walls
BUILDING COMPONENT: Used in wall and floor assemblies, particularly in foundation wall systems.

get A FREE quote For Your Renovation!

Details

Overview

Henry WP200 serves as a critical component in comprehensive building envelope systems, delivering waterproof protection in high-risk moisture zones. With increasing precipitation trends and more volatile freeze-thaw cycles in regions like the Greater Toronto Area, the demand for robust foundation waterproofing has never been higher.

Engineered with a dual-layer design — rubberized asphalt bonded to polyethylene — the WP200 creates a tough, flexible, and impermeable shield around sub-grade structures. Unlike older asphalt coatings that degrade over time or under UV exposure, this membrane maintains its performance even after years of soil contact.

Its resistance to tearing and its ability to self-seal make it especially valuable for foundations in active soil conditions, such as clay-rich areas found in the Toronto region. Combined with compatible accessories like Henry adhesives, drainage boards, and protection sheets, WP200 ensures full system integration and maximum moisture defense.

Guide

Installation

Step

Clean and dry the foundation surface. It must be free of dust, oil, or sharp protrusions. For best adhesion, apply Henry primer where recommended.

Step

After full membrane application, install a protection board or drainage layer to protect the membrane during backfill. Ensure the footing drain is functional and properly graded.

Step

Apply the cold adhesive or primer and wait until tacky. Roll out Henry WP200 membrane and firmly press it against the wall, starting at the base and working upwards.

Step

Ensure overlaps are a minimum of 2.5 inches. Use a roller to eliminate air pockets and enhance bonding. Use compatible sealant or detailing accessories at terminations, corners, and penetrations.

COMPARATIVE TESTING

When evaluated alongside traditional damp-proofing coatings and spray-on membranes, Henry WP200 outperforms in puncture resistance, water permeance, and adaptability to dynamic foundation movement. Its sheet membrane format ensures consistent thickness and simplifies quality control during application — a frequent issue with roll-on coatings.