Product Overview
Saint-Gobain Weber Tile Adhesive PW503 is a cement-based polymer-modified tile adhesive that utilizes Weber's triple-graded formulation to deliver high water retention, full coverage, and strong bonding performance. Certified by the French Indoor Air Quality A+ standard and China Environmental Labeling (Ten-Ring), it ensures environmental safety and reliable bonding for residential and commercial tile installations across diverse scenarios.
Key Features
Excellent Water Retention
Triple-graded formulation effectively prevents water loss during application, ensuring optimal bond formation.
High Coverage & Strong Bonding
Achieves full mortar coverage and high bond strength, minimizing hollowing risks and reducing tile detachment or rework issues.
Eco-Friendly & Safe
Free of harmful volatile substances, backed by dual authoritative eco-certifications, protecting both indoor environments and human health.
Versatile Application
Adapts to various substrate conditions with easy operation, improving installation efficiency and quality consistency.
Applications
Suitable for indoor wall/floor installation of high-water-absorption (E ≥ 6%) glazed tiles, ceramic tiles, etc.
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For tiles with water absorption < 6%, use with Weber tile primer for back-coating.
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Compatible with stable, non-deformable substrates including concrete, cement mortar, concrete panels, and masonry.
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Applicable in dry or humid indoor environments. Tiles must comply with GB/T4100-2015 Ceramic Tiles standards.
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Application Guidelines
Tools Required
Putty knife, notched trowel, rubber mallet, electric mixer, mixing bucket, caulking gun.
Working Conditions
• Ideal ambient temperature: 5°C–35°C. Avoid application during rain, extreme temperatures, frost, direct sunlight, or strong wind.
• Do not reuse set mortar. Protect freshly laid tiles from disturbance.
Substrate Preparation
Substrate must be solid, clean, and free of hollowing, cracks, deformation, looseness, oil, wax, or frost.
Clean contaminants or release agents with detergent and high-pressure water rinsing; air-dry until no surface water remains.
Remove old paint/putty down to the original mortar layer, rinse, and air-dry before application.
Repair hollow/cracked areas with mortar and cure for 48 hours before proceeding.
Pre-wet highly absorbent or hot/dry substrates to a surface-dry but inner-moist state before application.
Installation Steps
Clean tile backs thoroughly to remove dust, powder, or bond-inhibiting substances. Air-dry after rinsing or sanding.
Mix powder with clean water at the specified ratio (exact water proportion available from Weber Technical Department) using an electric mixer until a smooth, lump-free paste forms.
Apply adhesive to both tile back and substrate using the double-buttering method. Press and adjust tiles to ensure full contact without hollowing. Maintain 2–3 mm joint width (adjustable as needed).
Use mixed mortar within 3 hours, avoiding high temperatures and direct sunlight.
Grouting can be performed 1–2 days after tile installation. Weber colored tile grout is recommended.
Protect from rain and moisture during transport. Store in dry conditions (RH < 70%); for long-term storage, cover with PE film to prevent moisture damage.
Net weight
40 kg
Standard
Complies with industry standards for ceramic tile adhesives
Shelf life
1 year from production date in unopened packaging under normal storage/transport conditions.
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