With the onset of navigation, each owner of an inflatable boat dreams of only one thing - calm water and good cooling, but it is at this moment that an unpleasant surprise can be found.
Herbal seam It is able to spoil any access to the water, turning the long-awaited fishing into a fight for buoyancy, so the skill of self-removal of defects is vital.
Restoration of tightness of the joint of cylinders and bottom is a process that requires not so much expensive equipment as careful surface preparation and strict adherence to temperature regimes during gluing.
Many owners are afraid to take on the PVC materials, fearing to permanently spoil the boat, but modern two-component polyurethane compounds forgive minor errors and provide strength, often exceeding factory strength.
Diagnosis of damage and choice of repair method
Before grabbing a tube with glue, you need to soberly assess the scale of the disaster, since the choice of recovery technology directly depends on the type of damage.
Most often, owners are faced with the divergence of the edges of the material, which occurs due to the aging of the adhesive layer or mechanical overvoltage when pumping the boat to the pressure limit values.
In some cases, the problem lies deeper: the fabric could have stratified or received microcracks at the folding site, which requires not just applying a new layer of glue, but installing a full-fledged layer of glue. patching from a similar material.
It is important to distinguish between cold and hot gluing methods: the first is suitable for small cuts and temporary repairs in the field, the second is for capital restoration of loaded nodes.
- 🔍 Visual inspection in good lighting will help to identify the detachment of the protective tape.
- 👂 Listening to a deflated boat in silence allows you to localize the source of the whistle of air.
- 🧼 Treatment of suspicious places with soap solution will show bubbles where the eye does not see anything.
- 📏 Measuring pressure with a pressure gauge will confirm or refute the presence of a hidden leak.
If the damage is in the zone of active load, for example, at the junction of the balloon and transom, it is absolutely impossible to save on materials.
⚠️ Warning: Attempting to seal the loaded seam with ordinary household glue or "Moment" without reinforcement will lead to a repeated tear under pressure after a few hours of operation.
Required tools and materials for the job
A high-quality result is impossible without a properly selected “chemistry” and a set of tools that should be at hand before the work begins.
The basis of success is the choice of the right glue: for boats from the PVC (PVC) fabrics are suitable only polyurethane two-component formulations such as Texacol, Kleyberg or specialized kits from boat manufacturers.
Single-component adhesives often contain solvents that can damage the fabric structure or not withstand prolonged contact with water and temperature changes.
In addition to glue, you will need a degreasing agent (acetone or a special cleaner), sandpaper with grains of 240-400, a hair dryer for construction work and a roller.
Don’t forget to prepare the material for patches: ideal if you have a repair kit from the manufacturer, but a piece of fabric from an old boat of the same type will do.
| Materials | Appointment | Importance |
|---|---|---|
| Polyurethane glue | Basic bonding | Critically important |
| Hardener | Activation of glue properties | High. |
| Degreaser | Removal of dirt and oils | High. |
| Sandpaper | Surface matting | Medium |
| Hair dryer | Activation and drying | Depends on the method. |
Using inappropriate solvents, such as gasoline or white spirit, can leave a greasy film that will reduce adhesion of the glue to zero.
Always use lilaless wipes for degreasing so that the tissue villi do not remain on the adhesive layer.
Surface Preparation: A Key Stage of Success
Many beginners make a fatal mistake, prolapse stage of careful preparation, believing that the glue itself will "grab" with any surface.
Actually. adhesion (adhesion) occurs only with the prepared material, from which all contaminants, oxides and protective coatings are removed.
The process begins with mechanical cleaning: the repair site and the back of the patch must be carefully treated with sandpaper before the appearance of matteness.
You do not need to wash the fabric to holes, it is enough to remove the upper glossy layer so that the glue can penetrate into the pores of polyvinyl chloride.
After machining, chemical cleaning follows: the surface is wiped with acetone or a special solvent until the wipe ceases to get dirty.
⚠️ Note: Do not use chlorine-containing cleaners, as they can react with the components of the adhesive and destroy the structure of the PVC tissue.
If you work in a garage, make sure it is dry and warm: humidity above 75% can lead to clouding of the adhesive seam and loss of its strength.
After degreasing, you can not touch the surface with your hands, since the skin fat will instantly create a barrier for glue.
☑️ Preparation for bonding
Technology hot seam repair
The hot method is considered the most reliable and is used to repair serious damage to critical areas of the boat structure.
The essence of the method is to activate the adhesive layer at a temperature of 50-60 degrees Celsius, which allows the polymer molecules to penetrate deeply into the tissue structure.
The glue is applied in a thin layer on both glued surfaces and is aged until it ceases to stick to the fingers, but will retain stickiness.
Then the surfaces are connected and warmed up with a building hair dryer, after which they are carefully rolled from the center to the edges to remove air.
The pressure during rolling should be sufficient to protrude small drops of glue around the perimeter of the patch, which indicates full contact.
The full polymerization time is between 24 and 72 hours, depending on the ambient temperature and the type of adhesive used.
Why can't you heat it too much?
Overheating of the fabric above 80 degrees can lead to deformation of PVC and destruction of the reinforcing mesh inside the material, which will make the boat unusable.
Control the heating temperature is best with an infrared thermometer or gently touching the surface with the back of the palm - it should be hot, but not burning.
Cold method of gluing and its features
Cold repair is often chosen for the simplicity and ability to work in the field, although its strength is somewhat inferior to the hot method.
In this method, the glue is applied in two layers: the first layer is rubbed into the fabric and dries until the stickiness disappears completely, the second is applied after 15-20 minutes.
The connection occurs after the second layer is dryed to a state of “stick”, when the glue is still sticky, but does not soil the hands.
The main advantage of the cold method is the lack of need for a power source for the hair dryer, which makes it ideal for express repairs on the shore of the reservoir.
However, it is worth remembering that the time of gaining maximum strength during cold bonding can take up to 5-7 days.
- 🌡️ The ideal temperature for work: +20... +25 C.
- ⏳ Drying time between layers: 15-30 minutes.
- 🚫 You cannot force dry glue on an open fire.
- 🧤 It is better to work with gloves, so as not to dirty clothes and hands.
If you plan to use the boat immediately after repair, the cold method may not provide guaranteed tightness in the first hours.
The cold method is convenient for temporary repairs on the way, but for capital restoration of the seams of the house it is better to use hot technology with a hairdryer.
Common Mistakes and How to Avoid Them
Even following the instructions, it is easy to make a mistake that will negate all efforts, so it is worth studying the experience of those who have already stepped on these rakes.
The most common problem is “washing” the seam when moisture or dust enters between layers of glue or fabric.
Also, there is often insufficient rolling of the patch, which leaves air pockets, which eventually turn into foci of detachment.
Some craftsmen try to speed up the process by using too much hardener, which makes the seam brittle and brittle.
Violation of the proportions of mixing glue components is a sure way to get non-sticky porridge instead of a strong connection.
⚠️ Never put the boat in the cold or in the direct scorching rays of the sun - temperature is critical for the chemical reaction of polymerization.
If the seam turned out to be uneven or with bubbles, do not immediately try to remove the patch - it is better to carefully heat the defect site and try to smooth it again.
Stitch care after repair
After the successful completion of the work, the boat takes time to finally stabilize the chemical bonds in the adhesive seam.
The first day of the repaired product is better not to touch and not pump, leaving it in straightened form at room temperature.
When the first pump after repair, you should not immediately give full pressure - it is better to pump the boat by 70% and leave it for several hours for inspection.
Regularly inspect the repair site after each trip: if the edges of the patch began to whiten or retreat, the procedure will have to be repeated.
Keep the boat in a dry place, avoiding prolonged exposure to ultraviolet light, which destroys both the PVC itself and the adhesive layer.
Timely washing and drying before packaging will prolong the life of your repair and the whole boat.
Can I put PVC on a boat with shoe glue?
Conventional rubber-based shoe adhesives are not designed for long-term use in water and under load. They can get wet or lose elasticity, so only use specialized polyurethane compounds for boats.
How much dry does the PVC adhesive for boats dry?
The initial grip time is 30 minutes to 2 hours, but the full strength and water resistance of the seams is gained after 24-72 hours depending on the temperature and type of glue.
What to do if there is no special glue?
In an emergency, you can use two-component epoxy compounds with plasticizers, but this is a temporary solution. For permanent repairs, it is better to purchase the right glue, since epoxy is less elastic.
Do I need to remove the old sealant tape?
If the old tape is held tight, it can be cleaned and glued over, but if it flakes off or swells, it must be completely removed, the surface cleaned and the new tape pasted.
At what temperature can not repair?
It is not recommended to glue at temperatures below +10 ° C and above +35 ° C, as well as at high humidity, as this disrupts the process of polymerization of the glue.