By TJE Builds
Introduction
When it comes to outdoor finishes for furniture, it is important to choose a product that can withstand the elements and provide long-lasting protection. In this article, we will be reviewing the performance of Varathane Spar Urethane as an outdoor finish. The verdict? Not so great. We will delve into the details of the product’s shortcomings, its inability to withstand sunlight, its lack of wood penetration, and the hassle it creates when it comes to restoration. Read on to find out whether Varathane Spar Urethane is the right choice for your outdoor furniture projects.
The Backstory
The author, a passionate woodworker, built a coffee table for a local coffee shop as a way to promote themselves in the community. However, lacking knowledge about outdoor finishes, they simply followed the instructions on the back of the Varathane Spar Urethane can and applied four coats to the coffee table. Little did they know that this decision would lead to disappointing results.
Outdoor Conditions and Observations
The coffee table was exposed to six or more hours of sunlight daily, with minimal shade from surrounding buildings. Additionally, it was fully exposed to rain, making it a true test for any outdoor finish. Despite being heavily used by coffee shop patrons, the author noticed that most of the finish had peeled off or disappeared from the table’s top surface. The remaining finish displayed a sickly yellow color and was starting to peel, creating an overall unappealing appearance.
Surprisingly, the base of the table, which had been shielded from direct sunlight, remained in good condition. It was clear that the finish’s performance was deeply affected by exposure to the sun, while the shaded areas showed minimal signs of damage. Another noteworthy observation was that the Varathane Spar Urethane did not penetrate the wood, which is expected due to its formulation as a spar urethane rather than an oil-based product.
The Downfalls of Varathane Spar Urethane
Sun Exposure and Degradation: The most significant drawback of this outdoor finish is its inability to withstand sunlight. The finish deteriorated rapidly, even after just eight months of exposure, leaving the table looking unsightly and aged. If your furniture will be placed in a fully shaded area, Varathane Spar Urethane may provide adequate protection, but in sunny conditions, it falls short.
Lack of Wood Penetration: As previously mentioned, the Varathane Spar Urethane does not penetrate the wood, leading to an uneven and unattractive appearance over time. While some may appreciate the natural aging process and the gradual graying of wood, the flaky and uneven results of this finish are far from desirable.
Restoration Challenges: Due to the flakiness and unevenness of the finish, restoring the table to its original look requires a complete sanding. Simply applying another coat of finish over the existing one is not a viable option. This adds time and effort to the restoration process, making it less convenient for those looking to refresh their outdoor furniture.
Final Verdict and Alternative Options
Based on the disappointing performance of Varathane Spar Urethane as an outdoor finish, the author does not recommend using it for similar projects in the future. However, this does not necessarily mean that it is a terrible product overall. In fully shaded areas where sunlight exposure is minimal, it may still provide adequate protection against water damage. Nevertheless, there are alternative products on the market that offer better performance, aging aesthetics, and easier restoration processes.
If you are seeking a reliable outdoor finish, consider exploring alternative options like tung oil or other products specifically formulated for exterior use. These alternatives tend to offer superior protection against the sun’s damaging effects, penetrate the wood for a more uniform appearance, and allow for easier restoration when the time comes.
In conclusion, Varathane Spar Urethane falls short when it comes to outdoor finishes. Its inability to withstand sunlight and lack of wood penetration make it an unfavorable choice for long-lasting, maintenance-friendly furniture. As a woodworker or DIY enthusiast, it is crucial to carefully consider the properties and performance of finishes before applying them to your outdoor projects.
