When choosing a new deck, you will frequently encounter the term 'synthetic teak.' While the aesthetics may seem similar, there is a world of difference in material science 'under the hood.' You may come across terms like 'REACH-compliant,' '3G,' or 'Low Migration.' These are undoubtedly positive developments; however, in the long run, you are still fighting against the laws of physics inherent to PVC.
Where most teak alternatives are based on PVC (Polyvinyl Chloride)—a material that is naturally rigid—Novalideck® was developed from a superior, liquid-poured PU (Polyurethane).
Why is this important for you?
We explain it based on three facts of physics.
1. Thermosets vs. Thermoplastics
PVC is a thermoplastic. This means the material reacts to temperature: it softens with heat and hardens with cold. Consequently, the material is constantly in motion, leading to continuous shrinkage and expansion.
Novalideck is a thermoset. After the liquid application, a chemical reaction occurs that forms an indestructible, stable structure. Once cured, the material is unaffected by temperature fluctuations. Your deck remains perfectly tight and stable, whether you are sailing in the tropics or Scandinavia.
2. Molecular Fusion vs. Welded Seams
Most traditional synthetic teak decks are made of PVC, consisting of individual strips welded together using hot air. No matter how high the quality of the weld, it remains a mechanical joint: a potential weak point subject to stress caused by the natural expansion and contraction of the material.
Novalideck is applied as a liquid, resulting in a seamless molecular fusion. There are no seams, no adhesive bonds between strips, and therefore no gaps where moisture or dirt can penetrate, or where material can delaminate.
To make PVC (naturally a rigid plastic) flexible, plasticizers are essential. The modern generation of synthetic teak decks now utilizes improved '3G' materials (Low Migration) that are fully REACH-compliant. This means the harmful plasticizers of the past (phthalates) have been replaced by safer, improved alternatives.
However:
Low Migration" vs. Zero Migration
The term "Low Migration" is frequently used. In essence, this is a marketing term for: "The plasticizers leak out of the material more slowly than they used to." The physical reality, however, remains that these substances eventually leave the PVC due to sun, salt, and heat.
The laws of physics remain unchanged: they remain additives.
Even the most advanced 3G plasticizers sit "loose" between the PVC molecules. Under constant exposure to UV radiation, salt water, and heat, these substances can slowly migrate or evaporate at a molecular level. This process causes PVC decks to lose their original flexibility over time or become more susceptible to staining.
Maintenance and Longevity
PVC decks often require sanding after a few years to remove migrated plasticizers and restore grip. Novalideck® maintains its non-slip properties from within, without ever needing a sander.
The fundamental difference with Novalideck: Polyurethane (PU) is inherently elastic due to the specific structure of its polymer chains. We require no additives or plasticizers to achieve or maintain flexibility. With Novalideck, flexibility is an intrinsic property of the material itself, not the result of a chemical addition. Consequently, the quality, grip, and color of a Novalideck floor remain constant, with no substances "disappearing" from the material.
Why Novalideck® is Technically Superior:
Temperature Insensitive
Zero Seams, Zero Weak Points
Lasting Grip without Sanding
The Practical Comparison
Temperature Insensitive
Zero Seams, Zero Weak Points
Lasting Grip without Sanding
| Feature | Novalideck® (PU) | "Modern" PVC Systems |
| Migration | None. Nothing can leak from the material. | "Low Migration." Delayed, but inevitable decay. |
| Plasticizers | 0%. Inherently elastic. | Contains additives to keep plastic flexible. |
| REACH Status | Fully compliant (no additives required). | Compliant (using approved additives). |
| Structure | Seamlessly poured molecular unit. | Composed of welded strips (risk of failure). |
| Maintenance | Cleaning only. Never needs sanding. | Sanding often required to restore grip. |
Conclusion: Why We Don’t Choose PVC
PVC systems use clever marketing to mask the inherent drawbacks of plastic. We have eliminated those drawbacks by utilizing superior polymer technology.With Novalideck®, you are not choosing an "improved" plastic deck; you are investing in a high-end, stable technical solution that outlasts the lifespan of your vessel.
Molecular Fusion vs. Welded Seams
From Production to Perfection | Ever wondered how a high-end Novalideck is crafted? In this video, we take you behind the scenes of our production process and showcase the impressive results across various projects.