A robust shield against the elements, an elastomeric waterproof coating safeguards structures from moisture damage. However, their effectiveness hinges on meticulous surface preparation. A well-prepared substrate ensures these coatings’ optimal adhesion, durability, and longevity, making the crucial difference between a reliable waterproofing solution and potential vulnerabilities.
Specialists from professional coating contractors can give you valuable insight into the surface preparation process. In this guide, we’ll go over what an elastomeric waterproof coating is, its uses, tips on surface preparation, and what the process entails.
What is an Elastomeric Waterproof Coating?
An elastomeric waterproof coating is a specialized surface protective coating that provides a seamless and waterproof barrier on various surfaces. Typically applied in a two-coat system:
- First Coating: The first coat adheres to the roof substrate, creating a foundational layer.
- Second Coating: The second coat is applied over the first, enhancing adhesion and overall strength.
Unlike single-coat systems, the two-coat approach ensures comprehensive protection for the underlying roof structure.
Elastomeric coatings are versatile and can be applied on various surfaces, including concrete, metal, and modified bitumen roofs. Their elastic properties allow them to expand and contract with temperature fluctuations, preventing cracking and ensuring long-term durability. These coatings extend the roof’s lifespan by effectively resisting water and protecting the building from leaks and moisture damage.
In addition, elastomeric coatings often have reflective properties, contributing to the energy efficiency of a building by reducing heat absorption and lowering cooling costs. With their ability to form a seamless and resilient waterproofing layer, elastomeric coatings are a reliable solution for enhancing the performance and longevity of roofing systems.
What Are They Used for?
The versatility of elastomeric coatings makes them popular for commercial structures. These coatings protect against the elements, preventing water infiltration, UV damage, and physical wear.
Common applications include:
1. Flat and Low-Slope Roofs
Ideal for flat and low-slope roofs, elastomeric coatings create a seamless barrier that guards against water ponding, UV radiation, and weathering.
2. Energy-Efficient Roofs
Reflective properties of elastomeric coatings contribute to energy efficiency by reducing heat absorption, lowering cooling costs, and creating a more comfortable indoor environment.
3. Industrial Roofs
They are used in industrial settings to safeguard roofs against harsh environmental conditions, chemical exposure, and potential physical damage.
4. Commercial Roofs
They are applied on commercial roofs to enhance protection, durability, and energy efficiency, extending the roofing system’s lifespan.
Why Proper Adhesion Is Important
Ensuring proper adhesion between the elastomeric roof coating and the roof substrate is crucial for the full benefits.
- Weather Resistance: A well-adhered coating protects against UV rays, weathering, and extreme environmental conditions.
- Extended Roof Life: Proper adhesion minimizes damage, contributing to an extended life for the roofing system.
- Reduced Maintenance Costs: By forming a seamless membrane, proper adhesion reduces the need for repairs and minimizes overall maintenance costs.
- Energy Efficiency: Enhances the coating’s reflective properties, reducing energy costs associated with cooling.
- Mold and Mildew Prevention: Inhibits the growth of mold, mildew, and algae, maintaining a healthier indoor environment.
- Leak Prevention: Creates a watertight barrier, preventing leaks and potential water damage.
- Structural Integrity: Resists wind uplift and thermal cycling, preserving the roof’s structural integrity.
These benefits underscore the significance of achieving and maintaining proper adhesion in an elastomeric roof coating.
Factors Affecting Proper Adhesion
Several factors influence the adhesion between the roof coating and the substrate. Surface preparation, the type and age of the roof substrate, and environmental conditions during application are pivotal. In upcoming sections, we cover the details of these factors, understanding how each plays a crucial role in ensuring the longevity and effectiveness of elastomeric waterproof coatings.
The Importance of Proper Surface Preparation for Elastomeric Waterproof Deck Coatings
Inadequate preparation can lead to suboptimal results and compromise the durability of the elastomeric coating system. Surface preparation creates a clean and well-textured substrate, promoting strong adhesion between the deck and elastomeric waterproof deck coatings. This adhesion is crucial for the coating to form a seamless, watertight barrier.
Here’s why surface preparation is of utmost importance:
Durability and Longevity
A properly prepared surface ensures that the elastomeric coating adheres uniformly, offering enhanced resistance against weathering, UV exposure, and foot traffic. This, in turn, contributes to the durability and extended lifespan of the deck coating.
Prevention of Delamination
Delamination, the separation of the coating from the substrate, is a common issue in improperly prepared surfaces. Adequate preparation helps prevent delamination, maintaining the integrity of the waterproofing system.
Effective Waterproofing
Surface preparation addresses irregularities, cracks, and imperfections in the deck substrate. A smooth and even surface is essential for the elastomeric coating to provide effective waterproofing, preventing water intrusion and potential damage to the underlying structure.
Uniform Coating Thickness
Adequately prepared surfaces facilitate the application of the elastomeric coating in a consistent thickness. This uniformity ensures the coating functions optimally across the entire deck, leaving no vulnerable spots.
Resistance to Environmental Factors
During application, surface preparation considers environmental conditions, such as humidity and temperature. This careful consideration enhances the coating’s ability to withstand varying climatic conditions, including freeze-thaw cycles.
Cost-Effective Maintenance
Investing time and effort in surface preparation pays off in the long run by reducing the need for frequent maintenance and repairs. A well-prepared surface minimizes the likelihood of coating failures and associated costly remediation efforts.
Proper surface preparation for elastomeric waterproof deck coatings is a fundamental step that sets the foundation for a robust and reliable waterproofing system. It ensures optimal adhesion, durability, and performance, safeguarding the deck against the challenges posed by environmental factors and usage over time.
Surface Preparation Process for Elastomeric Waterproof Deck Coatings
Roofing and deck coating contractors from Raider Painting use a straightforward process to prepare surfaces:
Step 1: Clear the Deck
Before you start, remove any furniture, plants, or obstacles from the deck. A clean workspace ensures better access and thorough preparation.
Step 2: Power Wash the Surface
Ensure the deck surface is free from any loose material, which can affect the coating’s adhesion.
Step 3: Repair Cracks and Imperfections
Patch up any visible cracks or imperfections on the deck surface using a suitable filler.
Step 4: Sand, Grind, or Level High Points
If your deck has raised or uneven areas, lightly sand them down to create a level surface. For major uneven surfaces, use proper deck leveling or grinding equipment.
Step 5: Cleanse with a Deck Cleaner
Use a deck cleaner to remove any remaining stains, mildew, or discoloration as per manufacturer recommendations.
Step 6: Inspect for Mold or Mildew
Check for signs of mold or mildew and use mildewcide cleaner, if any.
Step 7: Check for Moisture Content
Ensure the deck surface is dry before applying the elastomeric coating. You should also consider current climate conditions, determining if forecasted conditions are optimal for coating applications.
High humidity may hinder proper curing, reducing effectiveness. In cold temperatures, coatings may become brittle, compromising flexibility. Excessive heat can accelerate curing, affecting application consistency. Adapting to specific climate conditions ensures optimal performance and longevity of elastomeric waterproof coatings.
Step 8: Mask Off Edges and Adjacent Surfaces
Use painter’s tape to mask off areas you don’t want to coat, such as the edges of the deck or adjacent walls.
Step 10: Start Coating Application
If weather conditions allow, start applying the elastomeric coating evenly across the deck surface. Allow sufficient drying time. Note that the area should be closed off from any foot traffic after application to allow the coating to dry off completely. This applies during application in between coats and especially during the final coating.
Step 12: Inspect and Enjoy Your Newly Waterproofed Deck
Once the final coat is dry, inspect the deck for any missed spots or irregularities.
Remember, following these steps ensures proper surface preparation, enhancing the performance and longevity of your elastomeric waterproof deck coating.
How Raider Painting Can Help You
Thorough surface preparation is the key to superior elastomeric coatings, ensuring strong adhesion and long-lasting waterproofing for decks and patios.
Trust Raider Painting for professional elastomeric coating application and meticulous surface preparation with over 40 years of industry experience for expert results. Contact us for a quote and have your questions answered by our specialists.
