High-pressure inflatable floor: a revolution in PVC boats

Modern requirements for boats dictate their conditions: lightness, compactness in folded form and rigidity comparable to aluminum counterparts. high-pressureIt's a huge change in the way PVC boats are designed, and in the past, owners had to put up with either a soft bottom that was bending under their feet or heavy plywood paioles that were gathering on the shore for a long time.

Technology High Pressure Floor (HIF) It allowed us to create inflatable elements that become hard as stone after being pumped, but weigh significantly less than metal or wood, ideal for those who value mobility and do not want to carry heavy sets along the shore. In this article, we will discuss in detail the design of such floors, their advantages over classics and the nuances of operation.

Unlike conventional inflatable tubes on the side, which hold a pressure of 0.2 atmosphere, the bottom must withstand loads 6-10 times more. Drop-stitchIt is this technology that allows the material to not stretch, but to keep its shape under high pressure, turning a soft bag into a rigid platform.

The design and principle of operation of HIF-floors

The technology is based on the method of connecting two layers of PVC tissue with thousands of strong threads perpendicular to the planes, and when you start pumping that floor, the threads are pulled together to keep the layers from moving apart, and you get a design that is indistinguishable to the touch from hard plastic or plywood. thread-density: the more of them per square centimeter, the smoother and tougher the surface will be after pumping.

It's important to understand that a high-pressure inflatable floor is not just a cushion, it's a complex engineering element, often with complex geometry. quillson Or inflatable keels that shape the boat's performance, and the rigidity of this design allows you to confidently install a higher-power outboard motor without fear of transom deflection or sleeve.

⚠️ Attention: Never try to test the hardness of the bottom by poking a spike boot with a sharp object or heel into it until the pressure has reached working values. An under-inflated HIF floor is extremely vulnerable to mechanical damage and punctures.

There are two main types of floors: one-piece and sectional. One-piece mattresses that are spread out inside the boat. Sectional ones consist of several independent chambers connected to each other. The second option is often preferred for larger boats, as it allows each section to be pumped separately and is easier to repair in case of damage.

Advantages over Classic floorboards

The main advantage of the inflatable floor is weight. Replacing heavy plywood or aluminum with a PVC mattress reduces the total weight of the kit by 30-40%. For single fishermen who have to carry a boat alone to the water, this becomes a decisive factor. In addition, the problem of storing wet floorboards disappears: the inflatable floor can simply be rinsed, dried and packageded without waiting for the wood to dry and wrip.

The second important advantage is comfort, and being in a boat with a hard inflatable floor, you don't feel the cold from the water, like aluminum, and the surface of PVC is nicer to the touch, and it has better thermal insulation. aerodynamics: smooth inflatable floor without joints and cracks creates less water resistance, which has a positive effect on speed and fuel consumption.

• 🚀 Assembly speed: A boat with a HIF floor can be prepared for launching in 10-15 minutes, while the assembly of a solder boat with banks and stringers takes 30-40 minutes.
• 🎒 Compactness: When folded, the boat with an inflatable floor takes up less space in the trunk, since there are no rigid geometric elements that dictate the volume of packaging.
• 🛡️ Safety: In the case of a boat rolling over on a wave, a soft bottom is less traumatic for passengers than hard corners of plywood or metal.

But there are some nuances, such as the inflatable floor, which requires more careful care of the surface inside the boat, and the sand and fine dirt that gets between the cylinder and the bottom of the boat can act as an abrasive, so the purity of the cockpit becomes a prerequisite for the durability of the boat.

Drop-stitch technology and materials

The heart of any high-quality inflatable floor is the material Drop-stitchIt's a layered pie structure, where the top and bottom layers of reinforced fabric are connected by millions of polyester threads, and when pumped, these threads are straightened, creating a huge internal tension, which is why these floors can hold pressures of up to 10 PSI (about 0.7 bar), which is 5-6 times higher than the sides.

The quality of the material depends on the density of the weave. In budget models, the threads are less often located, which at high pressure can give the effect of "ribbon" or small wavy surface. Top models use threads of increased strength and frequency of weaving, which provides a perfectly flat surface on which you can walk in ordinary shoes (with caution). Reinforcing layer It also plays a role: the higher the density of PVC coating, the higher the resistance to abrasion.

Valves are an important element of the design. HIF floors are equipped with special high-pressure valves, often of the type Bravo Or two-stage systems like this, which allow you to quickly fill the chamber with a lot of air, and then get the pressure you need, and the valve's reliability is critical, because it can collapse under pressure, and it can cause the bottom to collapse instantly on the go.

⚠️ Attention: Do not use car compressors without pressure control for the final stage of pumping the HIF floor. A sharp surge in pressure can damage the seams or the valve itself. Always use a pressure gauge.

Modern materials are also treated with UV protection, as the bottom of the boat, especially in shallow water, can be subjected to intense solar radiation.

Comparison of inflatable floor types

When you choose a boat or upgrade an existing model, you have to ask the owner what type of floor design you want, and the market has a few different solutions, and so as not to get confused by the marketing names, let's compare the main specifications in the table.

Parameter	Inflatable HIF (whole)	Inflatable HIF (sectional)	Plywood plywood
Weight.	Very low.	Low.	Highly
Toughness	High (depending on pressure)	High.	Maximum
Assembly time	5-10 minutes	10-15 minutes	30-40 minutes.
Comfort (warmth/noise)	Highly	Highly	Low (cold/noisy)

Solid inflatable floors are most commonly found in small- to medium-sized boats (up to 3.6 meters) and are easy to use: rolled, inserted, pumped. However, transporting a long mattress folded can be inconvenient for owners of compact cars. Sectional floors do not have this disadvantage, as they consist of 2-3 parts that are easy to pack into a medium-sized bag.

Plywood plywood, though a thing of the past, still has its fans, and its main advantage is absolute unsinkability (in combination with foam) and the ability to install rigid stationary equipment. high-pressure Wins by a wide margin.

Operation and pumping rules

Operating HIF floors requires certain rules that can reduce the life of the product. The most important thing is to control pressure. Insufficient pressure will deform the boat on the water, create a bubble in the middle and deteriorate the running performance. Excess pressure, especially in the heat, threatens to rupture the seams. Use the rule: swing to par on the shore, but before getting on the water on a hot day, blow the air a little.

The pumping process is best done in two steps: first, using a pump bag or the first step of the foot pump, fill the volume with air. At this stage, the floor is only slightly straightened. Then, by connecting the high pressure pump, bring the pressure to operating values (usually 6-8 PSI). It is important to ensure that at the time of the final pumping, no one was standing on the floor or there were any foreign objects.

• 🌡️ Temperature: Remember, the pressure inside the chamber depends on the temperature, a warm-boat will blow away in the cold, and a sun-busted boat may burst.
• 🧹 Clean cockpit: Before each operation, sweep out sand and pebbles. Abrasive particles at 10 atmospheres act like sandpaper, rubbing the bottom layer of PVC.
• 🔧 Regular checks: Once a season, check the tightness of the valves with soap solution. leaks at high pressure may not be audible, but critical for stiffness.

If you use a boat in rocky rivers or on a shell, it is recommended to use special protective mats or sleighs over the inflatable floor. This will add a little weight, but save the main ballast element from punctures.

Repair and maintenance

Despite the high strength, puncture or cut is possible. Repair of the inflatable floor of high pressure is not much different from repair of the sides, but has its own features. Due to the high internal tension of the material, a simple patching may not be enough - the edges of the cut may diverge. Therefore, for serious damage (more than 2-3 cm long), it is recommended to use the method of inserting a "fungus" or double patch on both sides, if the design allows you to reach the inside.

For minor repairs, a standard remix is enough, which comes with the boat. The surface must be degreased, cleaned and warmed with a hairdryer before gluing. The glue should be applied in two layers, allowing the first to dry. Pay special attention to the edges of the patch: they must be tightly rolled with a roller to prevent air and moisture from entering under the glue.

⚠️ Attention: It is strictly forbidden to use solvent-based adhesives not intended for PVC or cold welding methods for metals to repair the high-pressure bottom, which will destroy the structure of the polymer.

The HIF floor boat should be kept straightened or slightly rolled up, without sharp clatters. It is best to keep the boat in limbo or on a flat surface in a case. Long-term storage in a highly compressed state (especially at low temperatures) can lead to microcracks in the places of cloth folds.

Can I wear shoes on the floor?

You can walk, but only in clean soft shoes (sneakers, slippers) and only when necessary. Heels, spikes, heavy shoes with a rough sole can damage the top layer of PVC. It is best to use special non-slip mats.

Frequently Asked Questions (FAQ)

What is the optimal pressure for an inflatable floor?

The optimum pressure is usually between 0.6 and 0.8 bar (6-8 PSI), and the exact values are always indicated in the product passport, exceeding this value is dangerous, and reducing the driving performance deteriorates.

Can I replace the floor with a flat floor?

Most of the time, yes. Many manufacturers of inflatable floors (HIFs) for their soldering models, but you need to make sure that the geometry of your boat's cylinders allows you to install such a floor without gaps.

How heavy is a boat with a HIF floor compared to a conventional inflatable floor (ND)?

The difference in weight is small, usually 2-4 kg depending on the size of the boat, and this slight weighting is completely compensated by the rigidity of the structure and the absence of the need to carry heavy plywood sheets.

What to do if the floor is “hunched” in the sun?

It's a normal physical reaction of air to heat, you have to blow some of the air until it's normalized, and ignoring that can cause the seams to rupture.

Are HIF floors compatible with electric motors?

They're perfectly compatible. The high-pressure inflatable floor is quite tough for the transom plate and the electric motor, and the key is to distribute the weight of the battery properly.