Inflatable swimmers often face situations where the appearance of their vehicles is no longer pleasing to the eye, with sunburned color, scuffles from frequent use, or the desire to simply change the image of the boat, all of which prompt the idea of painting. However, many are afraid to take up the job for fear of spoiling the material or breaking the seals. In fact, the process of color renewal is available to anyone who is willing to spend time preparing and complying with the technology.
Painting. polyvinyl chloride It's not just an aesthetic procedure, it's also a way to protect the material from UV radiation, and if you make it right, you create an extra barrier to extend the life of the fabric, and it's important to understand that you don't have to use regular paint because it doesn't stick on slippery surfaces and it cracks quickly when the cylinders are bending.
In this article, we will take a look at all the stages of restoration, from the choice of materials to the finish drying, you will learn what tools are really needed and what you can do without. A competent approach will allow you to get a result that will not be inferior to the factory surface, and your boat will look like new again.
Selection of the appropriate coloring composition
The first and most important rule is that the paint should be specialized. Conventional enamel or nitro paints do not have the necessary elasticity and adhesion to PVC. When you inflate the balloon, this coating will simply burst or peel off in pieces. You need polyurethane or acrylic compounds designed specifically for inflatable structures and awnings.
There are several types of solutions on the market, and the choice depends on the desired result. Single-component paints are convenient because they do not require mixing, but they are less resistant to abrasion. Two-component formulations provide a stronger coating, but you need to work with them faster, because after mixing the components, the chemical curing reaction begins.
- 🎨 Polyurethane enamel They form a strong, elastic film that is resistant to water and the sun.
- 💧 Acrylic paints for PVC - quickly dry, do not have a sharp smell, suitable for interior work or decor.
- 🛡️ Primers' grounders - are required to create an adhesive layer between the fabric and paint.
- 🌫️ aerosol - convenient for local repair and painting hard-to-reach places, but less economical.
⚠️ Warning: Never use paints that contain acetone or aggressive solvents in high concentrations. They can "eat" the top layer of PVC, making the fabric sticky and destroying its structure, which will lead to loss of leakage.
When choosing a color, consider that dark colors heat up in the sun more strongly, which can lead to an excessive increase in pressure in the cylinders in hot weather. Light shades, especially popular in-thematics (olive, khaki, gray), better reflect the sun's rays. It is also important to check the compatibility of the chosen paint with the material of your boat, especially if these are branded models like Fregat or Flinc.
Before buying a main batch of paint, purchase a small sampler and apply it to an inconspicuous section of the boat (for example, on the bottom of the transom compartment) to check the material's reaction and color after drying.
Necessary tools and workplace preparation
Painting quality is 80% pre-production-dependent. You don't need a sophisticated industrial tool, but a basic kit should be at hand. You're better off in a well-ventilated room with an air temperature of 15 to 25 degrees Celsius. High humidity or too low a temperature can disrupt the polymerization process of the paint.
First, you have to prepare the surface. The old coating, the dirt, the fat and the oxides have to be completely removed. This uses soft rags and a degreasing agent. Don't use aggressive chemistry, just a regular white spirit or a specialized PVC cleaner.
List of necessary tools:
- 🧽 Abrasive materials - small sandpaper (grain content 240-400) or scotch bright for matting the surface.
- 🔫 spray-steer - for uniform application, although you can use a high-quality brush with hard bristles.
- 🧤 Remedies Respirator, gloves and safety glasses are mandatory when working with chemistry.
- 📰 Covering material - paint tape and film to protect fittings and valves.
Pay special attention to the valves and seams, and they need to be carefully sealed with paint tape so that the paint doesn't get inside the mechanism or onto the adhesives, and if the paint leaks under the valve, the boat can poison the air, and repairs will become much more difficult.
☑️ Preparation for painting
Technology for preparing the surface of the boat
Surface preparation is a step that you can't skip or do "over your sleeves." PVC has a smooth, slippery structure, and without machining, the paint will not hold well. Your job is to create micro scratches that will increase the contact area of the coloring substance with the material.
The matting process is done neatly, without much pressure. Use scotch bright or fine-grained sandpaper. Movements should be circular or chaotic, so as not to leave deep furrows. After processing, the surface should become matte and rough to the touch.
The next step is degreasing. Even if the boat is visually clean, it can still have subtle fat spots from the hands or lubricants. Rub the entire surface with a rag soaked in a degreaser. Let the solvent evaporate completely before the next step.
⚠️ Attention: Don't touch the prepared surface with your hands after degreasing. Fat marks from your fingers can create spots where the paint won't lie down or bubbles. Only work with gloves.
If there are old damages or cracks on the boat, they must be sealed or shpatted before painting begins. This uses liquid PVC remixes. Once the patch is dry, it also needs to be cloaked and degreased level with the main surface.
Paint and primer application process
Applying paint on PVC requires patience. You can't try to paint everything the first time with a thick layer, it will lead to sweats and long drying. The technology involves applying several thin layers. The first layer is often called "ground" or "fog" and is applied very thinly, almost translucently, to ensure adhesion.
If you use a two-part paint, mix it strictly according to the manufacturer's instructions. The proportions must be accurate, otherwise the paint may not dry or lose its properties. Once mixed, you have a limited time (constitution viability), usually 2 to 4 hours.
Application technique:
- 🖌️ First layer - applied thinly, you can divorce, the main thing is to cover the entire surface.
- ⏳ Suit Interlayer drying is from 30 minutes to 2 hours depending on the temperature.
- 🎨 Subsequent layers - are applied more densely, overlapping the previous ones, usually 2-3 layers are required.
- 🔄 Cross-course Apply the second layer perpendicular to the first for uniformity.
When using a brush, try not to drive in one place many times so as not to "lift" the previous layer. The spray gives a smoother result, but requires the skill of adjusting the torch. Keep the tool at a distance of 20-30 cm from the surface.
Nuances of working with the spray gun
The air pressure should be within 2-3 atmospheres. Too high pressure will cause the paint to dry out in the air, forming a "swing" on the surface. Too low will give large drops and leaks. The spray torch must be tuned to block the previous passage by 50%.
Table of compatibility and drying time
It is important to consider the drying time of each layer and the environmental conditions, and the following are indicative data for popular paint types at +20°C.
| Type of paint | Drying time (between layers) | Complete polymerization | Expenditure (g/m2) |
|---|---|---|---|
| Polyurethane (2K) | 1-2 hours | 24-48 hours | 60-80 |
| Acrylic (1K) | 30-40 minutes. | 12:24 hours. | 100-120 |
| aerosol | 15-20 minutes. | 6-12 hours | 150-200 |
| Liquid rubber | 40-60 minutes. | 24 hours. | 300-400 |
Notice that full polymerization is not just drying out when the dust is no longer sticky, it's the time it takes to get the paint to the final strength and elasticity, and early operation of the boat can damage the fresh coating.
If you work in the cold season, drying time can increase by 2-3 times, in this case, it is recommended to use heat guns, but you need to direct the flow of hot air carefully, not overheating PVC above +50 degrees.
Drying, polymerization and coating care
Once the last layer is applied, the most important step is drying. Don't blow the boat up right away. Although the surface may appear dry, the polymer bonding process is going on inside, and early inflating will stretch the fresh film, and it can crack at the folding sites.
The optimal drying conditions are warm, dry, without drafts or dust. Skroznyak is dangerous because it can bring debris to a sticky surface, and also cause uneven drying. Direct sunlight is also undesirable in the first hours, as it can cause solvents to boil in the paint thickness.
- ☀️ Temperature conditions Avoid extreme temperature changes during drying.
- 💨 Ventilation It should be moderate to remove solvent vapors but not to create winds.
- ⏱️ Excerpt. - the first 24 hours the boat is better not to touch, after 48 hours you can gently inflate for inspection.
Care for the painted surface is simple: wash the boat with a soft sponge with soap solution. Do not use hard brushes or abrasive powders. Periodically treat the cylinders with protective sprays with UV filters, this will preserve the brightness of the color for many years.
⚠️ Warning: If you find the surface sticky even after drying completely, it may mean a mismatching of the components or a too low temperature when applied, in which case you may need to apply a special finishing varnish or repaint.
Keeping the interlayer drying time and the full polymerization time is more important than the number of layers applied, and haste is the main reason for marriage when painting PVC.
Frequently Asked Questions (FAQ)
Can I paint a PVC boat with a regular car enamel?
No, you can't. Car enamels are metal-based and lack the elasticity required. When the balloon is deformed (inflated/blown, wave), the coating will crack and fly around, and solvents in car enamels can damage the structure of PVC.
Do I have to blow the boat out before painting?
It is desirable, but not necessarily completely, that the boat can be left slightly inflated to spread the folds, but the pressure should be minimal, but professionals recommend working with deflated cylinders to avoid accidental overstretching of the fabric when applying layers.
How long does the paint last on the PVC boat?
When technology is used and quality materials are used (e.g. Interlux The coating lasts from 3 to 5 years of active use, depending on the intensity of operation and storage conditions (sun, salt water).
How to wash the paint off if it hits clothes or tools?
Until the paint is dry, it can be removed with a PVC solvent or acetone, and once polymerized, it can only be removed mechanically or by special washes for old paint coatings, but they can be aggressive to some materials.
Can I paint a boat in the garage in the winter?
You can do this by keeping the temperature at 15°C and keeping the humidity low, and the main problem in winter is condensation on the cold surface of the boat, if you bring it in from the cold, and the boat has to warm up to room temperature a few hours before work begins.