Schluter Kerdi Bonded Waterproofing Membrane for Tile – 108 Sq Ft, 8mm

Description

Product Overview

The Schluter Kerdi Bonded Waterproofing Membrane is engineered to provide a robust, 8‑millimeter thick barrier that safeguards tile installations against water intrusion and vapor migration. Constructed with a modified polyethylene (PEVA) core, the membrane combines flexibility with high tensile strength, allowing it to conform to irregular surfaces while maintaining a consistent thickness. Both faces of the sheet are reinforced with non‑woven polypropylene fleece, which acts as an anchoring layer that securely bonds to thin‑set mortar, ensuring that tiles adhere firmly without the risk of delamination. The product dimensions—3′ 3″ width, 33′ length, covering 108 square feet—make it suitable for large‑scale projects such as shower walls, bathtub surrounds, and residential steam showers. With a weight of 6.6 pounds per roll, it is manageable for installers while still delivering the durability required for high‑moisture environments. The membrane is classified as waterproof, offering complete protection against liquid water, and also serves as a vapor‑retardant, reducing the potential for moisture buildup within the substrate. Schluter backs this membrane with a 10‑year limited warranty, provided the installation follows the company’s technical guidelines, underscoring confidence in its long‑term performance.

Usage

Designed for both residential and commercial applications, the Kerdi Bonded Waterproofing Membrane excels in a variety of settings where moisture resistance is paramount. In residential bathrooms, it is the ideal solution for creating waterproof shower enclosures, protecting the underlying framing and drywall from water damage. The membrane’s flexibility allows it to be applied to curved surfaces, making it suitable for niche shower niches, bench seats, and even custom tile patterns. For commercial projects such as hotels, spas, and public restrooms, the membrane provides a reliable barrier that meets stringent building codes and health standards, ensuring longevity and reducing maintenance costs. Its compatibility with thin‑set mortar means that tiles can be installed directly over the membrane using the thin‑bed method, streamlining the construction process and eliminating the need for additional uncoupling membranes. Moreover, the product’s vapor‑retardant properties make it a valuable addition to floor underlayment systems in areas prone to high humidity, such as laundry rooms and kitchens, where it helps prevent mold growth and structural degradation.

Why Choose Us

Choosing the Schluter Kerdi Bonded Waterproofing Membrane means selecting a product that combines engineering precision with practical installation benefits. Schluter Systems, a recognized leader in tile installation technology, has developed this membrane to address common challenges faced by installers, such as uneven substrate surfaces, moisture penetration, and tile adhesion failures. The PEVA core offers superior waterproofing while remaining thin enough to maintain a low profile, preserving the intended design aesthetics of tiled spaces. The dual‑sided fleece ensures that the membrane adheres uniformly, reducing the likelihood of air pockets that can compromise the waterproof seal. Additionally, the membrane is tested and certified to meet industry standards for water resistance, providing peace of mind for architects, contractors, and homeowners alike. The 10‑year limited warranty reflects Schluter’s commitment to quality and offers a safety net against manufacturing defects, reinforcing the product’s reliability. Customer support includes access to detailed installation manuals, technical data sheets, and a responsive service team ready to assist with any project‑specific queries, further enhancing the overall value proposition.

Key Features

• Durable 8mm PEVA core delivers reliable waterproofing and vapor‑retardation for long‑lasting tile installations.
• Dual‑sided non‑woven polypropylene fleece ensures strong adhesion in thin‑set mortar, preventing tile delamination.
• Flexible sheet conforms to irregular surfaces, making it ideal for curved walls, niches, and custom designs.
• Comprehensive 10‑year limited warranty provides confidence and protection against manufacturing defects.
• Dedicated Schluter technical support and detailed installation guides help ensure successful project outcomes.

FAQ

What types of tiles can be installed over the Kerdi membrane?

The membrane is compatible with all standard ceramic, porcelain, and natural stone tiles when installed using a thin‑set mortar. It provides a stable, waterproof base that supports both large‑format and mosaic tiles, allowing designers flexibility in aesthetic choices.

Is the membrane suitable for use on both walls and floors?

Yes, the Kerdi Bonded Waterproofing Membrane is engineered for both vertical and horizontal applications. Its flexible nature and strong adhesive fleece make it effective on shower walls, bathtub surrounds, and floor underlayment in wet areas, ensuring comprehensive moisture protection throughout the space.

How does the 10‑year warranty work?

The warranty covers any manufacturing defects that may arise within ten years of installation, provided the product is installed according to Schluter’s Installation Handbook and Technical Data Sheet. It does not cover damage caused by improper installation, misuse, or external forces.

Can the membrane be used in residential steam showers?

Absolutely. The membrane’s vapor‑retardant properties, combined with its waterproof performance, make it an excellent choice for steam shower environments where both water and steam exposure are high. Proper sealing of joints and corners is essential to maintain its effectiveness.

What preparation is required before installing the membrane?

Before installation, ensure the substrate is clean, dry, and free of debris. Any cracks or gaps should be repaired, and the surface should be primed if recommended by the manufacturer. The membrane should be laid out flat, allowed to acclimate to the room temperature, and then adhered using a suitable thin‑set mortar, following the detailed steps in the Schluter installation guide.