Zinsser Gardz

Zinsser Gardz® is a unique water-based sealer designed to tackle problem interior surfaces. Formulated to penetrate deeply, it dries to a rock-hard, moisture-resistant film that seals, binds and stabilises porous or damaged substrates.

Unlike ordinary primers, Gardz® repairs and reinforces fragile surfaces such as torn drywall paper, joint compound, calcimine coatings and chalky finishes. It also seals in wallpaper adhesive residue, preventing future bubbling or lifting.

Fast-drying, low odour and water-based, Gardz® is the professional choice for preparing walls and ceilings before painting or papering, giving you a reliable base for a flawless finish.

Why Choose Zinsser Gardz?

✅ Deep-penetrating sealer – Reinforces damaged and porous surfaces
✅ Prevents future problems – Stops paint from flaking, blistering or soaking in unevenly
✅ Water-resistant finish – Ideal base for paint, wallpaper, or decorative finishes
✅ Easy to apply & clean – Water-based formula with soap and water clean-up
✅ Trusted for interior use – Perfect for renovation, repairs, and prep work

Surface Preparation

• Ensure surfaces are clean, dry, sound and free of dust, grease or contamination.

• Remove loose or flaking material by scraping or sanding.

• When sanding pre-1960s paint, take precautions against lead dust.

• Fill cracks and defects with a suitable filler and sand flush before applying.

• Do not apply over actively damp or wet surfaces.

Technical Data

• Type: Water-based clear sealer

• Finish: Dries clear (non-tintable)

• Sizes Available: 500ml, 1L, 2.5L, 5L

• Coverage: 5–10m² per litre depending on porosity

• Touch Dry: 30 minutes

• Recoatable: 3 hours

• Full Cure: 3 days

• Application Methods: Brush, roller or airless sprayer

• Features:

  • Repairs torn drywall paper

  • Binds chalky or powdery surfaces

  • Seals in wallpaper adhesive

  • Hardens soft or porous finishes

• Environment: Interior use only

• Clean Up: Soap and water

Directions for Use

1. Stir well before use – do not thin.

2. Apply liberally using a brush, roller or sprayer, ensuring full penetration of porous areas.

3. Allow 30 minutes to dry before assessing whether a second coat is needed on highly porous substrates.

4. Recoat or apply wall coverings after 3 hours.

5. Wash tools immediately with warm soapy water.

6. Store between 5°C and 25°C, protected from frost.

Zinsser Gardz - TDS

Zinsser Gardz - MSDS