Elastomeric Paint: The Ultimate Solution for Cracked Walls and Waterproofing

What Is Elastomeric Paint?

Elastomeric paint is a high-build, flexible coating that stretches like rubber to bridge cracks and create a seamless waterproof barrier on exterior surfaces. It's significantly thicker than standard paint — one coat of elastomeric paint is equivalent to several coats of regular exterior paint — making it one of the most durable and protective coatings available for masonry and concrete surfaces.

Key Benefits of Elastomeric Paint

• 🛡️ Crack bridging — seals hairline cracks up to 1/16" wide
• 💧 100% waterproof — prevents water infiltration through walls and foundations
• 🌡️ Temperature flexible — expands and contracts without cracking or peeling
• ☀️ UV resistant — maintains color and integrity under direct sunlight
• 🏠 Energy efficient — thick coating adds insulation value to exterior walls
• ⏳ Long-lasting — typically lasts 10–15 years with proper application

Where to Use Elastomeric Paint

• Exterior stucco walls — the most common application; seals and protects stucco from moisture
• Concrete and masonry — foundations, retaining walls, and block walls
• Brick facades — waterproofs while allowing the wall to breathe
• Basement exterior walls — prevents water seepage from soil moisture
• Balconies and terraces — waterproofs horizontal surfaces exposed to rain
• EIFS (Exterior Insulation Finish Systems) — compatible with synthetic stucco systems

Elastomeric Paint vs. Regular Exterior Paint

How to Apply Elastomeric Paint

1. Clean the surface thoroughly — pressure wash to remove dirt, mold, and loose paint; allow to dry completely (48–72 hours)
2. Repair large cracks — fill cracks wider than 1/16" with elastomeric caulk before painting
3. Apply masonry primer — use a compatible primer on bare concrete or new stucco
4. Apply first coat — use a 3/4" to 1" nap roller for maximum coverage; work in sections
5. Allow proper dry time — typically 4–8 hours between coats depending on temperature and humidity
6. Apply second coat — always apply two coats for full waterproofing performance
7. Inspect after curing — check for pinholes or missed areas after 24–48 hours

Pro Tips from ProFix Home Repair

• Never apply elastomeric paint in temperatures below 50°F (10°C) or above 90°F (32°C)
• Avoid applying in direct sunlight — work in the shade or during cooler parts of the day
• Use a thick-nap roller (3/4") to ensure the paint fills all surface texture and pores
• Don't thin elastomeric paint — its thickness is what gives it crack-bridging ability
• For basement walls, pair with an interior waterproofing system for best results

Shop Elastomeric Paint at ProFix Home Repair

Browse our Elastomeric Paint collection for top-rated products from trusted brands. Whether you're waterproofing a stucco exterior or sealing a cracked concrete wall, we have the right elastomeric coating for your project.