Schluter PRIMER-PS Peel & Stick PRMPSQT1 Primer - Quick-Drying, High-Adhesion, Water-Based for OSB, Plywood, Vinyl & Gypsum - Compatible with DITRA-PS, DITRA HEAT - Low Odor, Zero VOC, 1 Quart (946 ML)

Product Features:

• Enhanced Bonding Strength: PRIMER-PS improves adhesion of Schluter peel-and-stick membranes to difficult-to-bond interior substrates, including OSB subfloor panels, plywood, gypsum concrete, concrete, existing tile, steel, resilient flooring/vinyl, and well-bonded flooring adhesive residue. It helps create a stronger, more reliable bond between the substrate and Schluter peel-and-stick membranes for interior tile installations.
• Quick-Drying Efficiency: PRIMER-PS dries in as little as 15 minutes depending on the conditions of the application area, helping save time during surface preparation. Once applied, the primer dries to a slightly tacky film and must be dry to the touch before installing the membrane.
• Convenient & Ready-to-Use: PRIMER-PS features a ready-to-use, one-component, water-based, solvent-free formula that does not require dilution. It is designed for one-coat application and can be applied with a roller or broom, with Schluter also listing brush, sponge, and garden-type sprayer as acceptable application methods.
• Low Odor & Zero-VOC: PRIMER-PS is solvent-free, water-based, low odor, and zero-VOC, making it suitable for interior applications where reduced odor and easy handling are important. It is designed specifically for use with Schluter peel-and-stick membranes in enclosed, interior application areas.
• Freeze/Thaw Stable: PRIMER-PS is freeze/thaw stable and remains a reliable primer option for use with Schluter DITRA-PS, DITRA-HEAT-PS, and DITRA-HEAT-DUO-PS peel-and-stick membranes. Schluter specifies freeze/thaw stability for one cycle at 0°F / -18°C; if frozen, the primer should be thawed at normal room temperature and stirred thoroughly before use.
  

Product Description:

Schluter®-PRIMER-PS is a ready-to-use, one-component, solvent-free, water-based primer formulated to enhance the bond of Schluter peel and stick membranes to difficult-to-bond-to surfaces such as OSB, plywood, gypsum concrete, or vinyl. PRIMER-PS is suitable for use with Schluter®-DITRA-PS, DITRA-HEAT-PS, and DITRA-HEAT-DUO-PS peel and stick membranes. PRIMER-PS can be used in interior applications where increased adhesion is required over various porous and non-porous substrates. Schluter also lists concrete, gypsum concrete, plywood, OSB subfloor panels, existing tile, steel, resilient flooring/vinyl, and well-bonded flooring adhesive residue as surfaces where PRIMER-PS provides a strong bond.

Schluter PRIMER-PS is the ideal solution for enhancing the bond strength of Schluter’s peel and stick membranes. Specially designed for challenging substrates, PRIMER-PS dries to a slightly tacky film in approximately 10–60 minutes, depending on substrate porosity, room temperature, and humidity. Under Schluter’s peel and stick product information, PRIMER-PS is also described as having a quick dry time as fast as 15 minutes, depending on application conditions.

The single-coat, ready-to-use formulation is easy to apply with a roller or broom, making it a practical choice for professionals and DIYers alike. Schluter recommends applying a thin, even coat and notes that a 1/4" / 6 mm medium-nap roller is the preferred application method; PRIMER-PS may also be applied with a broom, brush, sponge, or garden-type sprayer. Do not dilute the primer, and avoid puddling, as excessive primer can delay drying time.

Free from solvents and VOCs, PRIMER-PS is low odor and formulated for interior use. Schluter lists PRIMER-PS as water-based, low odor, zero-VOC, and freeze/thaw stable. Its freeze/thaw stability adds to its reliability in storage, and Schluter specifies one freeze/thaw cycle at 0°F / -18°C; if frozen, the primer should be allowed to thaw at normal room temperature and stirred thoroughly before use.

PRIMER-PS is your go-to primer for achieving strong, reliable peel and stick membrane installations over approved interior substrates. It is designed to help optimize adhesion between the substrate and Schluter peel and stick membranes, creating a uniform primer layer for a stronger and more reliable bond. Proper surface preparation is essential: the surface must be clean, smooth, dry, and free of moisture, paint, grease, oil, pen markings, sealers, curing compounds, and flooring adhesive residue that is not well bonded.

PRIMER-PS is intended for use as a primer beneath compatible Schluter peel and stick membranes in ceramic and stone tile installations. It is not a moisture or vapor barrier, and it is not for exterior applications or submerged applications unless waterproofing is applied. Always follow the current Schluter installation guidelines and product data sheet for full application requirements.