Painting your exterior brick can dramatically refresh your home's curb appeal, adding value and protecting against the elements. If you're tackling this project yourself, selecting the right paint from Bunnings is crucial for a durable, beautiful finish that stands the test of time. This guide will walk you through everything you need to know, from choosing the best products to proper preparation and application techniques.
Quick plan (TL;DR)
- Assess brick condition and clean thoroughly.
- Choose the right paint type (acrylic, elastomeric) suitable for brick at Bunnings.
- Gather all necessary tools and safety gear.
- Prepare the surface: repair, clean, and prime.
- Apply paint evenly in multiple coats.
- Allow adequate drying and curing time.
- Conduct final inspection and cleanup.
Before you start
Painting exterior brick is a rewarding project, but it requires careful planning and execution. Consider the scope: are you painting the entire house or just a feature wall? Your skill level for detailed prep work, ladder use, and consistent paint application will influence the outcome. What can go wrong? Poor preparation can lead to peeling paint; choosing the wrong paint type can trap moisture; and improper ladder use can cause serious injury. Always remember that permits might be required for significant exterior changes in some areas – check with your local council or building department before starting.
Tools & materials
To ensure a smooth project, gather your tools and materials before you begin.
Tools
- Pressure washer (optional, can often be rented from Bunnings)
- Stiff bristle brush or wire brush
- Scraper
- Caulk gun
- Sandpaper (medium-grit)
- Painter's tape (UV resistant for exterior use)
- Drop cloths or tarps
- Paint rollers (with extension pole, heavy-duty nap for rough surfaces like brick, 18-25mm)
- Paint brushes (for cutting in and detailed areas)
- Paint sprayer (optional, for rent or purchase, significantly speeds up application)
- Ladder (appropriate height for your home's exterior)
- Buckets
- Paint stirrer
- Safety glasses
- Chemical-resistant gloves
- Dust mask or respirator
Materials
- Masonry cleaner/fungicide (e.g., sugar soap or a specialized mildew killer)
- Exterior caulk/filler for masonry (e.g., polyurethane-based)
- Exterior primer specifically for brick/masonry (e.g., Dulux 1 Step Prep, Taubmans 3 in 1 Prep)
- Chosen exterior brick paint (100% acrylic latex or elastomeric, in your preferred brand like Dulux Weathershield, British Paints 4 Seasons, or Berger)
- Rags
- Mineral turpentine (for oil-based clean-up if using specific primers, or for cleaning some tools)
Time, cost, and difficulty
Time: A typical medium-sized brick house exterior could take 3-7 days, largely depending on preparation time and weather. This includes cleaning, repairs, priming, and two coats of paint. Allow for adequate drying time between each step.
Cost: Expect to spend anywhere from AUD $300 to $1500+ for materials alone, depending on house size, chosen paint quality, and how many tools you already own. Paint typically costs $50-$100+ per 4L tin, while primers are similarly priced. Remember to factor in costs for cleaners, repair materials, and safety gear.
Difficulty: Moderate to High. The sheer scale and detailed preparation make it more challenging than interior painting. Working at heights and the need for thorough surface prep are key factors for a successful, long-lasting finish.
Step-by-step instructions
Follow these steps to ensure a long-lasting, beautiful finish:
- Inspect and Repair: Walk around your home, checking for any cracks, loose mortar, efflorescence (white powdery substance), or damaged bricks. Use a scraper to remove any loose paint or flaking material. For cracks or gaps, use an exterior-grade masonry caulk or filler. For efflorescence, scrub with a wire brush and a diluted acid solution (follow manufacturer instructions carefully, wear full PPE, and rinse thoroughly). Allow all repairs to cure as per product instructions.
- Clean the Brick: This is arguably the most critical step. Use a pressure washer on a low to medium setting (no higher than 1500 PSI to avoid damaging mortar) to remove dirt, grime, mold, and mildew. If you don't have a pressure washer, a stiff bristled brush, a bucket of water, and a masonry cleaner (like sugar soap or a specific fungicide cleaner from Bunnings) will work. Ensure the brick is spotless and allowed to dry completely – at least 24-48 hours, or longer if weather is damp. Rule of thumb: The brick should feel bone dry to the touch, and ideally, you should have several dry days before and after painting to ensure optimal adhesion.
- Mask and Protect: Use painter's tape to protect windows, doors, trim, and other areas you don't want painted. Lay down drop cloths or tarps over shrubs, plants, and pathways around the base of your house. Secure them against wind.
- Prime the Surface: Apply a high-quality exterior masonry primer. This step is non-negotiable for unpainted, porous brick, or brick that has been heavily cleaned/repaired. Primer ensures better paint adhesion, blocks stains, and provides a uniform base. Apply one coat evenly with a roller or sprayer, covering all areas. Let it dry according to the manufacturer's instructions, typically 2-4 hours.
- Choose Your Paint at Bunnings: For brick, you generally want a breathable, weather-resistant exterior paint. Bunnings stocks a wide range from major brands. Look for:
- 100% Acrylic Latex Paint: This is the most common and recommended choice. Brands like Dulux Weathershield or British Paints 4 Seasons offer excellent durability, flexibility (to resist cracking with brick movement), and mildew resistance. Look for 'exterior masonry paint' or 'exterior wall paint' with a high acrylic content. They allow the brick to 'breathe,' preventing moisture buildup.
- Elastomeric Paint: For extremely porous or slightly cracked brick, an elastomeric paint can offer superior flexibility and waterproofing. It forms a thick, elastic film that bridges hairline cracks. However, it's generally thicker, more expensive, and less breathable than standard acrylics, so ensure your brick doesn't have existing moisture issues before opting for this. Discuss your specific brick type and condition with a Bunnings paint expert.
- Apply the First Coat of Paint: Once the primer is dry, start painting. Use a roller with a thick nap (18-25mm) for rough brick surfaces to ensure good coverage into the mortar joints. Use brushes for cutting in around windows, doors, and edges. If using a sprayer, follow sprayer instructions, ensuring even passes. Apply thin, even coats rather than one thick coat.
- Apply the Second Coat (and potentially Third): Allow the first coat to dry completely as per manufacturer's instructions (usually 4-24 hours). Then, apply a second coat, following the same technique. Depending on the colour change and brick porosity, a third coat might be necessary for full opacity and durability.
- Clean Up: Carefully remove painter's tape before the paint is fully cured but dry enough not to smudge (usually within a few hours of the final coat). Clean brushes and rollers immediately with water (for water-based paints). Dispose of paint waste responsibly according to local regulations. Enjoy your refreshed exterior!
Common mistakes to avoid
- Skipping proper surface cleaning and preparation, which is fundamental for paint adhesion.
- Not using a high-quality exterior masonry primer, especially on raw or heavily cleaned brick.
- Painting over efflorescence or existing moisture issues, which will lead to peeling and paint failure.
- Using interior paint or non-breathable exterior paints that can trap moisture within the brick.
- Painting in extreme temperatures (too hot or too cold) or when rain is expected, affecting drying and curing.
- Applying paint too thickly, leading to drips, uneven curing, and potential cracking.
- Neglecting safety gear, especially when working on ladders or with power tools like pressure washers.
Troubleshooting
Here's how to address common issues:
| Symptom | Likely Cause | Fix |
|---|---|---|
| Paint peeling/flaking | Poor surface prep, moisture issues, wrong primer | Scrape off loose paint, clean, dry, re-prime with appropriate primer, and repaint. Identify and address any moisture source. |
| Efflorescence reappearing | Salt deposits migrating through brick, moisture | Scrape, scrub with acid cleaner (following safety instructions), rinse, allow to dry completely, apply specialized efflorescence blocker primer, then repaint. |
| Uneven finish/streaks | Insufficient coats, poor rolling technique, paint drying too fast | Apply additional thin, even coats, ensuring consistent roller pressure and maintaining a wet edge to avoid lap marks. |
| Mildew/mold growth | Persistent moisture, shade, lack of fungicide in paint | Clean with fungicide solution, allow to dry completely, repaint with a high-quality, mildew-resistant exterior paint. Consider improving ventilation or drainage in affected areas. |
| Paint doesn't adhere | Dirty surface, incompatible primer, wrong paint type | Scrape off non-adhering paint, clean thoroughly, ensure appropriate primer/paint combination, reapply. Ensure products are compatible and suitable for masonry. |
| Cracking/Alligatoring | Paint applied too thick, insufficient drying between coats, low quality paint | Scrape off affected paint, sand smooth, prime thoroughly, and reapply thin, even coats of a high-quality, flexible exterior masonry paint. |
Safety notes
Your safety is paramount throughout this project. Always prioritize it.
- Personal Protective Equipment (PPE): Always wear safety glasses or goggles, chemical-resistant gloves, and a dust mask or respirator when cleaning, sanding, or painting. Ensure adequate ventilation when using any paint products, especially in enclosed areas. Read all product labels for specific PPE recommendations.
- Ladders: Use a stable ladder appropriate for the height you're working at. Ensure it's placed on solid, level ground and securely positioned. Have a spotter if possible, especially when working at significant heights. Never overreach; always move the ladder. Inspect the ladder for damage before each use.
- Pressure Washer: Use caution to avoid electrical shock (ensure GFCIs are in use) and spray injuries. Keep others, especially children and pets, away from the work area while operating. Never spray electrical outlets, light fixtures, or gas meters.
- Chemicals: Read manufacturer warnings for all cleaners, primers, and paints. These products can be hazardous if misused. Store them safely out of reach of children and pets in their original, labeled containers. Dispose of chemicals and paint waste according to local council guidelines for hazardous waste.
- Electrical/Gas: Be aware of power lines or gas meters on the exterior of your home. Maintain a safe distance and never spray or paint near exposed electrical components or gas lines.
FAQ
Q: Can I paint over already painted brick? A: Yes, if the existing paint is in good, non-peeling condition. Clean the surface thoroughly, scuff sand any glossy areas to provide a key, and apply a high-quality exterior primer if there are any bare spots or significant repairs. This helps ensure adhesion for the new coat.
Q: What color paint is best for brick? A: Neutral tones like whites, greys, and light beiges are popular, timeless, and reflect heat well. Darker colours can absorb more heat and may fade faster over time. Consider your home's architectural style, landscaping, and surrounding environment. Always test samples on a small, inconspicuous area first.
Q: Do I need a primer for already painted brick? A: A primer isn't strictly necessary if the existing paint is sound, clean, and the new paint is the same type (e.g., acrylic over acrylic). However, if you're changing colors dramatically, have done repairs, or are unsure of the existing paint type, a high-quality exterior primer is always a good idea for better adhesion, stain blocking, and consistent final colour.
Q: How much paint will I need? A: A rough estimate for smooth surfaces is 1 litre per 4-6 square meters per coat. Brick is very porous and textured, so assume closer to 1 litre per 3-4 square meters per coat. Always consult the specific paint manufacturer's coverage rates on the tin and factor in at least two coats for the paint (plus one coat for primer).
Q: Is painting brick bad for the house? A: No, not if done correctly with the right materials. Using a breathable, high-quality exterior masonry paint ensures moisture can escape from the brick, preventing issues like spalling or dampness. Poor preparation or using non-breathable paints can trap moisture and cause long-term problems, so choose wisely.
Sources & claims handling
Always refer to product-specific manufacturer instructions for detailed application, drying times, and safety information. For local regulations, consult your local building department or council. Reputable general safety information can be found from organizations such as:
- WorkSafe Australia (for occupational health and safety)
- Environmental Protection Authority (EPA)
- Paint manufacturer product data sheets (e.g., Dulux, British Paints)
- Local Council Building Regulations
- Australian Standards (AS/NZS)
Painting your home's brick exterior is a significant project that can yield stunning results. By investing time in proper preparation, selecting the right high-quality paint from Bunnings, and adhering to safety guidelines, you can achieve a professional, durable finish that enhances your home for years to come. Take your time, follow the steps, and don't hesitate to consult Bunnings paint experts if you have specific product questions.