GacoDeck is a water-borne, single-component elastomeric coating designed for waterproofing decks, balconies, and rooftop surfaces. It is formulated to adhere to a variety of substrates including plywood, concrete, metal, fiberglass, and previously coated surfaces. This article provides a detailed overview of the installation process, application techniques, maintenance considerations, and environmental impact of GacoDeck, based on information from official technical data, product manuals, and user reports.
Overview of GacoDeck
GacoDeck is a high-performance, acrylic polymer-based waterproofing system intended for both residential and commercial applications. The product is manufactured to create a fully adhered, durable membrane that expands and contracts with the substrate, preventing water infiltration and structural damage. It is designed for use on non-ponding walking decks and is recommended for both new and existing surfaces.
The product is available in a 3.5-gallon kit and comes in multiple colors, including Oyster, Pewter, Shale, Adobe, Sedona, and Desert. It has a low VOC (less than 50 g/L) formulation, making it an environmentally friendly option for waterproofing. The coverage area of one 3.5-gallon kit is approximately 100 square feet, with a recommended total of four coats to achieve a dry film thickness of 28 mils.
Preparation for Application
Before applying GacoDeck, it is essential to prepare the surface properly to ensure optimal adhesion and durability. The preparation process involves several key steps:
Surface Cleaning
The first step in preparing the surface is to clean it thoroughly. All dirt, debris, and old coatings must be removed. Power washing is recommended for best results, as it can effectively eliminate contaminants and ensure a clean, smooth surface.
Surface Repairs
Any cracks, holes, or damaged areas should be repaired before applying GacoDeck. This includes filling in gaps and ensuring the surface is even. Repairs are crucial to prevent future issues such as water pooling or structural weaknesses.
Priming the Surface
In some cases, a primer may be necessary to enhance the adhesion of the GacoDeck coating. If the surface is porous or has been previously coated, applying a primer is recommended. This step helps the coating bond more effectively to the surface, improving its longevity and performance.
Application of GacoDeck
Once the surface is properly prepared, the GacoDeck coating can be applied. The application process involves several key steps to ensure the best results:
Stirring the Coating
Before application, the GacoDeck coating must be thoroughly stirred to ensure an even consistency. This is important to achieve uniform coverage and to prevent any clumping or uneven application.
Applying the First Coat
The first coat of GacoDeck should be applied evenly using a roller, brush, or sprayer. It is important to follow the manufacturer’s instructions regarding drying times. Typically, each coat should be allowed to dry for a minimum of 2 to 4 hours. If more than 72 hours elapses between coats, the surface should be cleaned with GacoWash before applying the next coat.
Applying Additional Coats
To achieve optimal waterproofing and durability, at least two coats of GacoDeck should be applied. In fact, the manufacturer recommends four coats for a total dry film thickness of 28 mils. Each coat must be fully dry before applying the next. This ensures that the coating forms a continuous, protective barrier.
Drying and Curing Times
After the final coat is applied, the coating must be allowed to cure for at least 72 hours before the surface can be used for heavy objects or foot traffic. The drying time for each coat is typically 2 to 4 hours, but this can vary depending on temperature and humidity conditions.
Inspection and Finishing
After the application of GacoDeck is complete, it is important to inspect the surface to ensure that the coating has been applied correctly and that there are no missed spots or areas that require additional coverage.
Surface Inspection
During the inspection, any areas with insufficient coverage or visible imperfections should be addressed. This may involve applying additional coats to specific areas or making adjustments to the application method.
Clean Up
After the coating has been applied, tools and equipment should be cleaned immediately to prevent the coating from hardening on them. GacoDeck can be cleaned up with soap and water, as it is a water-based product.
Environmental Impact and Safety
GacoDeck is designed with environmental considerations in mind. The product has a low VOC (Volatile Organic Compounds) formulation, which helps reduce its impact on air quality. Additionally, the durability and longevity of the coating mean that it does not need to be reapplied frequently, reducing waste and the need for additional resources.
The product is safe to use in a variety of conditions, but there are some limitations to consider. GacoDeck is not recommended for use in climate zones that experience extremely cold temperatures (below -20°F) for more than three months. Additionally, the product is not suitable for joints and cracks that exceed 1/8 inch in width.
Maintenance and Longevity
To ensure the continued performance and appearance of GacoDeck, regular maintenance is recommended.
Regular Cleaning
The surface should be cleaned regularly using a mild detergent and water. Harsh chemicals should be avoided, as they can damage the coating. Regular cleaning helps maintain the aesthetic appeal and functional integrity of the coating.
Inspection for Damage
Periodically inspect the deck for any signs of damage or wear. This includes checking for cracks, thinning of the coating, or areas where the coating has peeled away. Promptly addressing any issues can help prevent further damage and extend the life of the coating.
Reapplication
Depending on the level of use and exposure to weather, the coating may need to be reapplied every few years. The manufacturer recommends following their guidelines for reapplication to ensure continued protection. Reapplication is typically necessary if the coating has worn thin or if the surface has been exposed to conditions that may have compromised its integrity.
Comparison with Other Deck Coatings
GacoDeck is often compared to other types of deck coatings, including traditional wood stains, epoxy coatings, and deck paint. Each of these options has its own advantages and disadvantages, and the choice of coating depends on the specific needs of the application.
Traditional Wood Stains
Traditional wood stains enhance the natural beauty of wood but do not provide the same level of waterproofing and durability as GacoDeck. Wood stains require frequent reapplication and maintenance, whereas GacoDeck offers long-lasting protection with minimal upkeep.
Epoxy Coatings
Epoxy coatings are known for their durability, but they lack the flexibility of GacoDeck. Epoxy coatings can crack and peel over time, especially in areas with significant temperature fluctuations. GacoDeck’s elastomeric properties make it a superior choice for long-term performance.
Deck Paint
Deck paint provides a decorative finish but often falls short in terms of durability and waterproofing. It tends to chip and peel under harsh weather conditions. GacoDeck, on the other hand, offers both aesthetic appeal and robust protection.
User Experiences and Feedback
User experiences with GacoDeck have been varied, with some reporting excellent results and others encountering issues with adhesion or performance.
Positive Feedback
Several users have reported that GacoDeck applied easily and provided long-lasting protection. One user noted that their 16-year-old deck, which was only thinly recoated every two years, never leaked or unbonded from the subfloor. Another user praised the ease of ordering, fast delivery, and good price, and indicated that they would purchase the product again in the future.
Negative Feedback
Some users have reported issues with adhesion, particularly in areas exposed to moisture. One user described a situation where the GacoDeck coating peeled in sections after one winter, despite following all application instructions. The warranty department responded by stating that the product met the physical properties outlined in the warranty, but did not address the adhesion issue directly.
Warranty and Support
GacoDeck comes with a 50-year limited warranty when applied properly. This warranty covers the product’s ability to form a waterproof membrane, provided that it is applied according to the manufacturer’s instructions. However, as noted in some user experiences, the warranty may not cover issues related to adhesion or improper application.
For support and warranty claims, users are encouraged to contact the manufacturer directly. The company provides detailed instructions and technical support to assist with any issues that may arise during the application or use of the product.
Conclusion
GacoDeck is a versatile and durable waterproofing solution for decks, balconies, and rooftop surfaces. It is designed to provide long-lasting protection against water damage, with a low VOC formulation that is environmentally friendly. The application process involves careful preparation, multiple coats of coating, and proper drying and curing times to ensure optimal performance.
While user experiences have been mixed, with some reporting excellent results and others encountering adhesion issues, the product generally performs well when applied according to the manufacturer’s instructions. Regular maintenance and inspections can help ensure that the coating continues to provide effective protection over time.
For those considering GacoDeck as a waterproofing solution, it is important to evaluate the specific needs of the application and to follow the manufacturer’s guidelines for preparation and application. With proper care and maintenance, GacoDeck can offer a reliable and long-lasting waterproofing solution for a variety of deck surfaces.