Owners of inflatable vessels often face the need not only for repair, but also for qualitative updating of the appearance of the craft. Coverage in the boat It's not just a way to make it beautiful, it's also an effective way to protect polyvinyl chloride tissue from ultraviolet light, abrasion and aggressive water, and over time, even the strongest material loses its elasticity, fades or becomes microcracked, which requires intervention.
There are many opinions on how to treat the surface: some recommend special varnishes, others rubber paints, and others liquid rubber. The choice depends on whether you just want to update the color, hide the scuffs or create a hydrophobic layer that repelles dirt. In this article, we will discuss the main types of materials, their application technologies and the nuances of surface preparation.
It is important to understand that polyvinyl chloride (PVC) is a specific material with a complex chemical structure. Ordinary oil paints Or nitro-emals are not going to work here, because they're just going to get off the film or destroy the fabric of the boat, so choosing the right composition is a top priority before you start any tuning work on your boat.
Types of protective compositions for PVC tissues
The boating materials market offers several main coating categories, each with its own physical properties, PVC adhesion and lifespan. Liquid rubber (Liquid Rubber) is perhaps the most popular option for those who want to create a durable, elastic and non-slip layer, sold as sprays or cans that are applied with a brush.
The second common type is specialized polyurethane They create a thinner, but very hard film that is very protective against scratching on the rocky bottom, and they are often used to restore the factory color that has been burned out over the years. PVC-varnish, which are more often used to give gloss or matteness, but do not hide major defects.
There is also a category of "restoration compositions" that contain solvents that slightly melt the top layer of tissue, creating a monolithic coupling. Unlike car enamels, specialized boat compositions retain elasticity when bending and do not crack in the cold.
- 🌊 Liquid rubber: creates a thick, noise-absorbing and non-slip layer, ideal for floor and cylinders.
- 🎨 Polyurethane enamel: provide a durable color and protection from UV rays, suitable for decor.
- 🛡️ Clays and impregnations: They are used for finishing and protection from dirt, but less protection from mechanics.
When choosing a material, be sure to pay attention to compatibility with the type of PVC. There are fabrics with a coating of polyurethane and fabric with a coating of PVC. Mix the chemistry should be careful, although modern universal formulations are often suitable for both types. Cheap analogues can contain aggressive solvents that will make the fabric sticky forever.
Surface Preparation: The Key to Durability
Nothing, not even the most expensive. boat-coverIt takes up to 70 percent of the time to prepare, but that's what the outcome depends on. The first step is always to thoroughly wash the boat using specialized detergents or a conventional soap solution to remove salt, silt and organics.
After drying, degreasing is necessary, using special PVC cleaners or, in extreme cases, isopropyl alcohol. acetone And you can't use aggressive solvents like 646, because they can damage the fabric by making it loose, and you can degrease it with a bunch of rags without a pile, and you can change the cloth as you get dirty.
☑️ Checklist for boat preparation
If there are old flaked pieces of paint or deep scratches on the surface, they need to be ground. They use fine-grained sandpaper (P240-P400), grinding creates a micro-relief that improves adhesion, and the dust after grinding is necessarily blown away or removed with a sticky napkin.
⚠️ Attention: It is strictly forbidden to apply the coating on a wet fabric or at high humidity (more than 80%), water trapped under a layer of paint will turn into steam when heated in the sun and will blister.
The final stage of preparation is camouflage, and all the elements that should not be painted (valves, handles, transom plates, fittings) are taped with paint tape and cover film, which will allow you to get clear boundaries and avoid getting paint into the mechanisms.
Technology of applying liquid rubber
Liquid rubber is the most forgiving material for beginners, it forgives small flaws and allows you to create a texture surface, you can apply it with a brush, roller or aerosol cylinder. If you use a cylinder, the technique is like painting a car: short spraying from 20-30 cm.
When working with a brush or roller, it is important not to create a too thick layer at once. Technology It requires a few thin layers, and the first layer is often sprayed or very thin, so that it can be absorbed into the pores of the tissue and form a base, and the next layer is applied after the last layer has completely dried out.
Apply liquid rubber at a temperature of +15 to +25 ° C. In the cold, the material thickens and lies in clumps, and in extreme heat it dries too quickly, without having time to spread.
The interlayer drying time is usually 30 minutes to 2 hours, depending on temperature and humidity. Full polymerization takes 24 to 48 hours. Don't rush the boat to the water immediately after painting, the material should gain final strength.
| Parameter | Meaning/Recommendation | Note |
|---|---|---|
| Application temperature | +15...+25 °C | Optimal regimen |
| Drying time (layer) | 1-2 hours | To the lip. |
| Number of layers | 3-5 layers | For a rich color |
| Complete polymerization | 24-48 hours | Before contact with water |
The thing about liquid rubber is that it fills in small bumps and it creates a soft-touch effect, which makes the boat feel nice and less slippery, which is important for fishing safety, but if you apply too many layers, the coating can become too heavy and less elastic.
Painting with polyurethane compositions
If your goal is to restore the glossy shine or factory appearance, then polyurethane They require more careful preparation and are often mixed with a hardener before application, and these compounds create a very strong chemical bond with PVC.
The application is usually done with a spray gun to get a perfectly smooth surface without stripes from the brush. At home, you can use high-quality brushes with synthetic bristles, but you need to move quickly and confidently, without returning to the already painted area, so as not to leave traces.
The secret of the perfect gloss
To obtain a mirror shine, the last layer of polyurethane paint can be carefully polished with a special PVC polyreole after complete drying (after 7 days).
The important thing is the ratio of the base to the hardener. If you break the dosage, you either don't dry the paint and you stay sticky, or you get too brittle and crack when you blow the boat off. Always use measuring cups and scales.
⚠️ Attention: Polyurethane compounds are often toxic in liquid form, and work should be done in a well-ventilated room or outdoors, using a respirator and gloves.
Mistakes in self-painting
Self-creation boating And there's a lot of common mistakes that can nullify all the effort, and one of the most common is to apply the next layer to the last layer that's not dried, and the solvents lock in, and the coating is blown up by the orange peel or bubbles.
The second mistake is ignoring the temperature regime, and trying to paint a boat in the cold or in the hot sun is doomed to failure, the paint dries instantly in the sun, before it can grip the base, and in the cold, the chemical reaction of polymerization stops.
- ❌ Bad degreasing: The greasy spots will come through any paint.
- ❌ Thick layers: This leads to long drying and the risk of detachment.
- ❌ Savings on materials: Cheap paints can eat away at the fabric of a boat.
Also often overlooked is the compatibility of materials: Applying water-based paint over an old layer of paint on solvents (or vice versa) can cause a reaction that leads to wrinkling of the coating. Always check the manufacturer's instructions for compatibility with previous layers.
The rule is, it's better to apply 5 thin layers than 2 thick layers. The thin layers dry evenly and hold tighter.
Care for painted surfaces
After boat-cover It's applied and dried, and it requires proper maintenance to extend its lifespan. Although modern materials are resistant to UV and water, aggressive chemicals (gasoline, oil, strong acid cleaners) can damage them.
Washing a painted boat with soft sponges and neutral detergents is unacceptable, as it will result in scratches that will clog the dirt. To store the boat, it must be thoroughly washed, dried and deflated.
If you notice minor damage or chipping, you can restore it locally without repainting the entire boat, using the same material that was used to paint it, and regular inspection and timely minor repairs will keep the boat looking like for years to come.
Winter storage
Painted boat is better to store in a deflated, but not folded in a tight twisted form, or suspended in a straightened state to avoid clogging paint.
FAQ: Frequently asked questions
Can I paint a boat with ordinary car paint?
No, conventional car enamel doesn't have the elasticity it needs, and when you blow or pump a boat, the fabric will stretch and shrink, causing the hard car paint to crack and peel quickly.
How much does the coating dry in the boat before launching?
The time of full polymerization depends on the type of material and air temperature, on average, you can operate the boat 24-48 hours after the last layer is applied, and the full strength is gained after 7 days.
Do I need to smear PVC before painting?
Special PVC soil is often not required if quality adhesive paint is used, however, if the surface is very smooth or old, applying a primer will greatly improve adhesion.
How to remove old cover from the boat?
The old layer is removed using special PVC washes or mechanical grinding, a chemical method that is more efficient but requires care not to damage the boat's fabric itself.