Zinsser Gardz Clear Sealer Primer is an essential solution for homeowners and professionals tackling compromised or porous wall surfaces. It excels at creating a hard, moisture-proof film that prevents common issues like drywall blistering and bubbling, while binding down chalky substrates. While incredibly effective, proper surface preparation, ensuring the surface is clean, dry, and sound, is crucial for optimal results. This clear, water-based acrylic resin primer deeply penetrates surfaces, dries fast, and sets the stage for a smooth, lasting finish.
Deep Penetration: Acts as an acrylic resin sealer that deeply penetrates porous surfaces, binding down loose, crumbling, and chalky finishes.
Moisture-Proof Barrier: Dries to a hard, clear, moisture-proof film that effectively prevents drywall blistering and bubbling, especially when skim coating or redecorating.
Fast-Drying & Clear Finish: Becomes touch dry in just 30 minutes and is recoatable in 3 hours, drying clear to ensure it doesn't impact the final paint or wallcovering color.
Water-Based & Low Odour: Offers easy cleanup with soap and water and has a low odor, making it more pleasant for indoor applications.
High pH Surface Application: Formulated with good alkali-resistant properties, allowing safe application on high-pH surfaces like newly cured plaster.
Versatile Problem Solver: Effectively seals damaged drywall, new drywall, joint compound, spackling, skim coats, plaster, calcimine, uncoated wallpaper, wallcovering adhesive residue, and textured paint finishes.
Binds Chalky Surfaces: Strengthens soft texture finishes and stabilizes compromised substrates, restoring them to a sound condition.
Seals Wallpaper Paste Residue: Prevents the reactivation of old water-soluble wallpaper adhesives, ensuring subsequent coatings adhere properly without cracking or peeling.
Prevents drywall blistering and bubbling effectively
Binds and strengthens chalky, crumbling, and porous surfaces
Dries fast (30 mins touch dry) and clear, saving time
Water-based formula allows for easy soap and water cleanup
Low odor for comfortable indoor use
Suitable for high-pH surfaces like new plaster
Highly versatile, addressing many common surface issues
Requires thorough surface preparation (clean, dry, sound)
New plaster needs a minimum 24-hour curing time before application
Info needed: Specific temperature and humidity ranges for optimal application and drying are not detailed in the product description.
Prevents drywall blistering and bubbling effectively
Binds and strengthens chalky, crumbling, and porous surfaces
Dries fast (30 mins touch dry) and clear, saving time
Water-based formula allows for easy soap and water cleanup
Low odor for comfortable indoor use
Suitable for high-pH surfaces like new plaster
Highly versatile, addressing many common surface issues
Requires thorough surface preparation (clean, dry, sound)
New plaster needs a minimum 24-hour curing time before application
Info needed: Specific temperature and humidity ranges for optimal application and drying are not detailed in the product description.
Zinsser Gardz Sealer Primer is designed to perform exceptionally in real-world scenarios where compromised or porous surfaces need stabilization before redecoration.
Damaged Drywall: When dealing with torn or damaged drywall facing paper, Gardz penetrates and seals the fibers, restoring the surface integrity. This is crucial for preventing bubbles that commonly form when skim coating with spackling or joint compound, ensuring a smooth repair.
New Drywall, Joint Compound & Spackling: These materials are highly porous. Applying Gardz creates a uniform, moisture-resistant film that seals these surfaces, preventing splotchiness and uneven finishes from subsequent paint layers. It also protects the drywall from blistering and tearing during future redecoration.
Plaster: Freshly applied plaster is often highly alkaline. Gardz's alkali-resistant properties allow it to be applied after a 24-hour cure period, sealing the porous surface and providing a stable base. For old plaster, it binds down any chalkiness after repairs.
Calcimine: As an extremely chalky and water-sensitive old plaster, calcimine benefits from Gardz's deep penetration. It resists moisture, preventing water-based topcoats from softening and compromising the calcimine layer underneath.
Wallpaper Adhesive Residue: Old wallpaper adhesive can reactivate with water-based coatings, leading to cracking and peeling. Gardz seals in this residue, creating a barrier that prevents reactivation and ensures new paint or texture finishes adhere properly.
Application: Gardz can be applied efficiently by brush, roller, or spray. A single liter covers approximately 10 square meters, depending on surface porosity. It becomes touch dry in 30 minutes and is ready for recoating in 3 hours, allowing for quick project turnaround.
Setup:
Surface Preparation: Ensure the surface is clean, dry, and in sound condition. Remove any loose material, dust, grease, or peeling paint. Repair any cracks or holes with spackling paste or joint compound before applying Gardz.
New Plaster: If applying to new plaster, allow it to cure for at least 24 hours.
Mixing: Stir the product well before use.
Compatibility: Zinsser Gardz is suitable for use on a wide range of porous interior surfaces, including:
Damaged Drywall
New Drywall
Joint Compound and Spackling
Skim Coats
Plaster (old and new, after curing)
Calcimine
Uncoated Wallpaper
Wallcovering Adhesive Residue
Textured Paint Finishes It is particularly effective on high-pH (alkaline) surfaces.
Care:
Cleanup: Tools and spills can be easily cleaned with soap and water immediately after use.
Storage: Store in a cool, dry place away from direct sunlight and freezing temperatures. Ensure the lid is tightly sealed to prevent the product from drying out.