Seasonal operation of the swimming vehicle is often limited by weather conditions, and it is the quality of the aircraft. tent But traditional opaque materials like Oxford or Tarpalin are very restrictive, making the boat's control blind, especially in fog or dusk, and the solution is to make it more difficult to navigate. flexible Modern material that allows you to maintain protection from wind and splashes, without sacrificing visual control of the situation.
The introduction of transparent inserts in the design of the awning requires an understanding of the properties of the polymers used, since cheap analogues can quickly become cloudy or crack in the cold. In this article, we will discuss in detail what is different. PVC from TPUHow to calculate the dimensions and perform installation to keep your cockpit dry and light.
Choosing the right material is critical, because it's not just aesthetics that matter, it's also the safety of the boat in stormy conditions. clear-cover It can withstand overloads to break and retains elasticity even at sub-zero temperatures, which makes it an indispensable element of equipment for serious water engines.
The main types of materials for transparent windows
The market for materials for aquatic machinery offers two main types of polymers used to create transparent inserts: polyvinyl chloride (polyvinyl chloride).PVC) and thermoplastic polyurethane (TPU). Polyvinyl chloride It's the most common and budget option, and it's a dense film, often reinforced with a mesh to increase tensile strength, and it's a great water protection, but it tends to harden and turbid in extreme frost, and it's prone to forming classes when stored improperly.
Unlike him, polyurethane (TPU) is a premium material with exceptional elasticity and transparency, and even at -40°C it remains soft, does not crack on the folds and has a high abrasion resistance, making it an ideal choice for high-speed boats where the wind load on the awning is maximum. TPU It may be several times higher than normal. PVC.
When choosing, you should also consider the presence of special coatings, such as: Anti-UV or Anti-FogUltraviolet filters prevent the material from yellowing under the scorching sun, and anticondensate coatings reduce fogging from the inside, which is critical for keeping the view in cold weather. Without these additives, the life of a transparent window is significantly shortened.
When buying material, always request a quality certificate and pay attention to the thickness marking - for running awnings, the thickness is optimal from 0.7 mm and above.
Comparative specifications of PVC and Polyurethane
To make a final decision, you need to make a detailed comparison of the performance of both materials in real-world use, and below is a table showing the key differences that will help you make an informed decision.
| Characterization | PVC (PVC) | Polyurethane (TPU) | Oxford impregnated |
|---|---|---|---|
| Transparency | High (up to 90%) | Very high (up to 95%) | Missing. |
| Frost resistance | Up to -20°C (hardening) | Up to -50°C (remains elastic) | Up to -40°C |
| Resistance to UV | Medium (requires supplementation) | High. | High. |
| Price per sq.m. | Low. | High. | Medium |
As you can see from the comparison, PVC The company remains the king of the budget segment, providing decent protection when used carefully in temperate climates. Polyurethane It dictates its rules for extreme conditions, where reliability and durability are more important than the original cost of the product, and Oxford is given in the table for contrast, since it is completely opaque and used for the main part of the awning, not the observation windows.
For year-round operation or storage of a boat in an open parking lot in cold climates, the choice clearly falls on polyurethane (TPU).
Advantages of using flexible glass in tents
The installation of transparent inserts radically changes the ergonomics of small-size vessel management, giving the captain a full view of the course and sides, this is especially important when mooring in windy weather or moving in a dense stream of other boats, when every second of delay can be expensive. Flexible glass creates an open cockpit effect, while maintaining heat and protecting against the oncoming air flow.
In addition, modern materials are highly light-transmittingThis is a way to save energy if you have inside lights, and passengers inside the awning don't feel isolated from the outside world, which makes it easier to walk long distances and more enjoyable for the whole family.
The aesthetic aspect is also important: a boat with transparent windows is more expensive and neat, and the tent is no longer a bulky shelter and becomes a full-fledged part of the design of the vessel, emphasizing its lines and shapes.
- 🌊 Full 360 degree view without needing to open the valves.
- 🛡️ Protection from splashes, rain and headwind while maintaining visibility.
- ☀️ Blocking harmful ultraviolet radiation (if there is an appropriate filter).
- ❄️ The possibility of using an awning in the off-season and at low temperatures.
Technology of installation and fastening of transparent inserts
The process of installing flexible glass requires precision and adherence to a certain technology to avoid leakage and deformation of the material in the future. high-frequency welding (HF), which provides a monolithic joint of the seam, or the use of special waterproof zippers and Velcro straps for removable elements, often used in self-shopping, the method of gluing the seams or stitching reinforced thread, followed by sealing.
The most important step is to cut the material taking into account temperature expansionPolymers tend to shrink in the cold and expand in the heat, so you have to leave small allowances or make special compensatory folds when you cut, and if you pull the film "into the string" in the summer, in the winter it can burst from stress.
⚠️ Note: When working with adhesives for PVC or polyurethane, be sure to degrease the surface and use only specialized adhesives (for example, on a urethane basis), otherwise the seam will disperse under load.
For fixing inserts in the frame of the tent is often used method boiling Each method has its advantages: welding is more reliable, but more difficult to repair, and lacing allows you to quickly replace a damaged piece of glass in the field.
☑️ Checklist before installation
Care for transparent coating and elimination of defects
The durability of flexible glass depends on proper maintenance during operation, and the main enemy of transparency is micro-scratches, which eventually turn into a cloudy veil, and chemically aggressive environments such as gasoline or oil. submerged obstacle And a soft sponge will help to maintain crystal transparency for many years to come.
It is strictly forbidden to use abrasive cleaning agents, hard brushes or solvents to clean the surface. If persistent contamination appears on the film, it is better to use special cleaners for PVC materials that do not destroy the polymer structure and protective layer.
In the event of small cracks or cuts, repairs are possible with special remixes, including patches of the same material and glue. heat-welding Or a complete insert replacement.
How to remove small scratches from PVC?
Small scratches can be polished with soft cloth with special polish for plastic or even toothpaste (not abrasive), but deep damage is almost impossible to repair - they will shine in the sun.
Frequent errors in selection and operation
One of the most common mistakes is buying a material of insufficient thickness in the hope of saving a thin film (less than 0.5 mm) on a running awning will quickly stretch with the wind, lose shape and break at the mounts. Optimum thickness for windscreens starts from 0.7-0.8 mm, and for stationary shelters, thinner options can be used.
Storage is also often ignored: rolled up in a tight roll in the cold, flexible glass can get irreversible classes that will become the centers of future rupture. Store awnings with transparent inserts must be spread out or loosely rolled at temperatures above +5 ° C.
- 🚫 Use of household chemicals with chlorine or acetone content.
- 🚫 The awning is twisted at negative temperatures.
- 🚫 Attempts to stretch the ground material are forced.
- 🚫 Cleaning dry (wiping with a dry cloth collects dust and scratches).
⚠️ Warning: Never leave a boat with a stretched awning under the scorching sun without ventilation - the greenhouse effect can lead to deformation of not only the film, but also the structural elements of the vessel itself.
Questions and Answers (FAQ)
Can I replace the transparent insert on my own at home?
Yes, if you have the skills to work with a sewing machine (for thick fabrics) or access to a construction hair dryer for neat gluing, however, to ensure full sealability and strength of the seam, you should contact a specialized workshop that uses industrial equipment for welding PVC.
How long does flexible glass last on a boat?
The life of the product depends on the material and the operating conditions: high-quality PVC, when used carefully, lasts 3-5 years, after which it can begin to turbid or yellow.TPU) is capable of retaining its properties for 7-10 years or more while remaining transparent and elastic.
What to do if the flexible glass is cloudy?
If the turbidity is caused by dirt, a thorough wash with a special tool will help. If the material has turned yellow or lost transparency due to aging and exposure to ultraviolet radiation (polymer degradation), it is impossible to restore it - you need to replace the insert.
Will flexible glass withstand the impact of a branch or stone?
Reinforced PVC and polyurethane have high tensile strength, but a sharp object can punch through the film, the material will stretch or crack rather than break chaotically, making it easy to patch.