WeatherClad® vs WeatherClad® WT: What Construction Pros Need to Know
When specifying coatings for exterior building surfaces, professionals seek systems that deliver durability and consistent performance over time. Pecora, provider of architectural-weatherproofing solutions, offers two coating systems suited for exterior applications: WeatherClad® and WeatherClad® WT. While both products are formulated to protect and enhance exterior substrates, each has distinct characteristics that may influence product selection based on project requirements.
Let’s dive into the differences between these two products, when to use each coating, and the role of primer when applying.
What Is Pecora WeatherClad®?
WeatherClad® is a high-solids, elastomeric acrylic wall coating engineered for exterior masonry surfaces. It’s ideal for applications where flexibility, crack-bridging, and long-term waterproofing are key. Thanks to its elastomeric properties, WeatherClad® expands and contracts with substrate movement, helping to seal hairline cracks (up to 1/16″) and resist moisture intrusion.
Key Features of WeatherClad®:
- Exceptional flexibility and elongation
- Breathable, allowing trapped moisture to escape
- High UV and weather resistance
- Excellent adhesion to substrates like concrete, stucco, and EIFS
- Durable and ideal for harsh climate zones
What Is Pecora WeatherClad® WT?
WeatherClad® WT is Pecora’s non-elastomeric, 100% acrylic wall coating. It’s designed for versatility and ease of application, making it a cost-effective solution for a wide variety of architectural finishes. Although it doesn’t stretch or bridge cracks like its elastomeric counterpart, WeatherClad® WT still provides excellent durability, color retention, and mildew resistance.
Key Features of WeatherClad® WT:
- Non-elastomeric acrylic formula
- Great for precast concrete, brick, stucco, fiber cement, metal, and wood
- Difficult for dirt, mildew, and other containments to stick
- Breathable, allowing substrate to dry properly
- Cost-effective with strong aesthetic and performance balance
When to Use Each Product
Choose WeatherClad® when:
- Your building faces frequent temperature swings and expansion/contraction
- You need to bridge hairline cracks for waterproofing
- You’re restoring surfaces that need flexible sealing
- You’re working on large commercial façades or masonry walls in harsh climates
Choose WeatherClad® WT when:
- You want a cost-effective, attractive coating for stable surfaces
- Your need a coating with a longer lifespan and easy to maintain
- Your project demands quick turnaround and easy application
- You don’t need the crack-bridging or elasticity of elastomerics
The Role of Primers: P-165 and SilcoPrime
For optimal performance, both WeatherClad® and WeatherClad® WT call for the right primer based on the substrate or project situation:
Pecora P-165 is a high-performance acrylic primer that improves adhesion and resists alkali and efflorescence. It’s the standard primer for new vertical masonry, concrete block, stucco, or tilt-up walls
SilcoPrime is a specialty STPU-based interlaminary primer designed for situations where you’re applying Pecora wall coatings over existing silicone-based coatings. This is critical for restoration projects involving silicone-sealed EIFS or masonry.
Using the proper primer ensures coating performance, especially in challenging substrates or restoration conditions
Final Thoughts
Whether you’re a contractor bidding a commercial repaint or an architect specifying systems for a new build, choosing between WeatherClad® and WeatherClad® WT depends on your substrate condition, desired performance, and budget.
Along with tools like SilcoPrime and P-165, Pecora offers a robust system to ensure success from surface prep to final finish. Our technical team is also available for support. For more information, please contact Pecora’s Technical Services team at (800) 523-6688 or visit pecora.com to learn more.
