Overview

Zinsser Gardz is a water-based sealer for porous, chalky, and crumbling surfaces, paints, and textured finishes. It’s formulated to deeply penetrate and dry to a hard, moisture-resistant film that seals and binds down problem surfaces. This unique sealer can be used in multiple projects from repairing paper damage on drywall to sealing old wallpaper. Along with a range of uses this sealer is fast drying, has a low odour, and dries clear making it easy to use.

• Low odour
• Binds chalky and porous surfaces
• Dries fast to a hard, moisture-proof film
• Can be top-coated with both water-based or solvent-based products

Preparation

Always ensure the surface to be treated is clean, dry, and free from any dust or possible contaminates.

• Remove any loose or peeling paint or wallpaper by sanding or scraping the surface. (Always take special care when sanding or scraping old surfaces, ensure to wear a suitable face covering to avoid inhalation.)
• Seal any stains with Zinsser Stain Killing Primer-Sealer
• Cut away loose or torn drywall facing paper with a razor or sand back with 80-grit paper until a sound area is reached. If drywall is gouged, remove loose pieces of gypsum core
• Remove loose wallcovering and residual wallcovering adhesive using
• Skim coated or spackled areas should be sanded smooth using 100 grit sandpaper

Application

Before applying stir the product thoroughly and test a small area.

• For best results use a quality nylon/polyester/synthetic brush with flagged tips. A roller can be used we recommend a 3/8” or less synthetic roller
• Do not overload the brush
• Apply Gardz to walls from the bottom up to prevent product from running down the wall
• Brush out any runs as they occur
• When applying to ceilings do not press hard or the product will drip out of the roller
• For ceiling applications where a roller would be too messy Gardz may be applied using a power sprayer or garden sprayer
• Maintain a distance of at least 45 to 60cm between the spray tip and the surface for pressure sprayers and 30 – 45 cm for garden sprayers

Note: Some types of wallpaper and translucent wallcoverings may require an additional coat of an opaque primer after use of Zinsser Gardz. Always follow the manufacturer instructions found on the tin.