DuraBlock Stain Blocking Primer

DuraBlock™ Stain Blocking Primer: Application Instructions

Proper surface preparation and application ensure maximum adhesion and a tight moisture and stain barrier. Follow these steps for professional results with DuraBlock Stain Blocking Primer.

1. Surface Preparation

• Clean the Surface: All surfaces must be completely clean, dry, and free of dirt, dust, grease, wax, oil, loose paint, mildew, or any foreign contaminants. Wash previously painted or glossy surfaces with an appropriate cleaner and rinse thoroughly.
• Repair Imperfections: Fill any cracks, holes, or gouges with a suitable non-toxic filler or patch compound and sand smooth.
• Sand Glossy Areas: Dull any shiny or glossy surfaces using medium-grit sandpaper to promote proper mechanical bonding.

2. Environmental Conditions

• Temperature: Apply only when air, surface, and product temperatures are between 50°F (10°C) and 90°F (32°C).
• Humidity: Avoid applying in high-humidity environments or if rain is expected within 24 hours of application.

3. Mixing & Application

• Stir Well: Stir the product thoroughly before application to ensure uniform consistency and paint distribution. Do not thin.
• Tools: Apply using a high-quality synthetic bristle brush, a 3/4- 1/2" nap synthetic roller cover, or a professional airless sprayer.
• Technique: Apply an even, full coat. Maintain a wet edge to avoid lap marks. Work methodically across the surface, ensuring uniform coverage over porous areas and potential stain points.

4. Dry Times & Recoating

• To Touch: Approximately 60 minutes depending on temperature and humidity.
• Recoat / Topcoat: Allow a minimum of 2 to 4 hours of dry time before applying your topcoat finish paint. The primer must be tack free. Severe tannin-staining or porous woods may benefit from a second coat of DuraBlock Stain Blocking Primer prior to painting.

5. Clean-Up

• Clean all tools, brushes, and equipment immediately after use with warm water and mild soap. Dispose of wash water responsibly in accordance with local regulations.

Frequently Asked Questions

Q: What is DuraBlock Stain Blocking Primer?
A: DuraBlock Stain Blocking Primer is a premium, multi-surface interior and exterior water-based acrylic bonding primer. It is engineered with advanced eco-friendly, bio-based chemistry to provide professional-grade stain blocking, superior hide, and exceptional adhesion without toxic chemicals.

Q: Is DuraBlock truly zero-VOC and non-toxic?
A: Yes. Formulated with 0 grams per liter of VOCs, it contains no harsh petrochemical solvents, hazardous air pollutants (HAPs), or Red List toxins, ensuring safe application and superior indoor air quality.

Q: What types of stains will this primer block?
A: It is designed to aggressively seal out common sub-surface stains, including wood tannins, water marks, light smoke damage, and minor grease bleeding, locking them beneath a tight, durable film.

Q: Can this primer be used on both interior and exterior surfaces?
A: Yes, DuraBlock Stain Blocking Primer is fully formulated for both interior and exterior applications across a variety of porous substrates like wood, drywall, masonry, and previously painted surfaces.

Q: What is the typical drying and recoat time?
A: The primer typically dries to the touch in 60 minutes. You should allow a minimum of 2 to 4 hours of dry time and be sure it is tack free before applying your topcoat finish paint.

Q: Do I need to thin the product before applying?
A: No, DuraBlock Stain Blocking Primer comes ready-to-use. Do not thin the product; stir thoroughly before application to ensure uniform consistency and pigment distribution.

Q: What tools should I use for application?
A: You can apply the primer using a high-quality synthetic bristle brush, a regular-nap synthetic roller cover, or a professional airless spray system.

Q: How do I clean up after application?
A: Clean up is simple and eco-friendly. Wash all tools, brushes, and equipment immediately after use with warm water and mild soap.