Good - “Singel layer” construction
We start this guidance with the simplest type of constructions regarding inflateble SUP-boards, the so-called “single layer” or “single skin” technology.
Dropstitch
All inflatable constructions are based on the so-called "Dropstitch" technology where thousands of inner threads hold together two separated surfaces where the two surfaces in this case consist of just a single layer or “skin”. When this construction is filled with air, the board is allowed to expand to a certain point before the threads contract and form the rigid shape of the SUP board, which thereby makes it float and can be paddled on.
Air tight
The "Dropstitch" construction itself is not airtight, so it needs to be covered by a liquid layer of PVC, which when it dries creates an airtight seal. Together, this forms a so-called "Single layer" construction. The two main advantages of SUP boards made with "single layer" are mainly weight and price. Less amount of material gives a very light SUP board and the fact that it also becomes cheaper does not make things worse.
Construction for function
Inflatable SUP boards with a “single layer” construction can handle a slightly lower maximum load than SUP boards with, for example, a “double layer” construction, stringers or other types of laminate. The price level for SUP boards with this construction of good quality starts at about SEK 5,000. Boards sold at a lower price are in many cases unable to carry an adult. The disadvantages of the "single layer" construction are that boards do not become as durable or provide the same stability as SUP boards with heavier constructions. Maximum air pressure here is about 20 PSI (recommended pressure is 15–17 PSI).
Better - Machine laminated double bearing construction
The so-called "machine-laminated double-layer" construction is the new standardized manufacturing technology for inflatable SUP boards. This design was groundbreaking when it arrived and the best you can get when it comes to standard class SUP boards. Here, a second PVC layer is laminated directly on a "dropstitch" construction with "single layer".
Stiffness
The lamination process means that all folds or bubbles that can form on the surface of the board are smoothed out. What is really impressive here is that these inflatable SUP boards are 20–25% lighter and 25–30% stiffer than those that only use a glued "double layer" construction. This can also lead to a weight loss of about 2 kg!
Optimal function
SUP boards with machine-laminated "double layers" are more expensive than the "single-layer" constructions, but since we manufacture our SUP boards ourselves, we can offer this construction from around SEK 7,500. If you want an inflatable SUP board with optimal function and performance that works for everything, our clear recommendation is a construction with "machine-laminated double layer". Maximum air pressure here is 25 PSI (recommended pressure 15–18 PSI).
BEST - “Machine laminated double layer” construction with “stringers” in carbon fiber
Kona's new inflatable SUP boards for training and competition have, in addition to the construction "machine-laminated double layer", been added with the so-called "Stringer" technology. The main part of the board is built according to the "machine-laminated double-layer" technique, i.e. "Drop stitch" construction with double PVC layers. The difference here is the addition of "stringers".
Stringers
The concept comes from traditional surfboard manufacturing, where a thin longitudinal reinforcement, a so-called "stringer" goes from the board's tail / stern all the way to the board's nose / lining and thereby gives increased rigidity.
Carbon fiber
In Kona's inflatable SUP boards for training and competition, the "stringer" is designed as a wide carbon fiber strip that is glued to the longitudinal centerline of the top and bottom of the board. The most important parameter regarding inflatable SUP boards for training and competition is rigidity and today this is probably the stiffest construction on the market.
Minimal flex
The purpose of these two carbon fiber "stringers" is to minimize the board flexing, i.e. that it is bent by the weight of the paddler or by the force of the paddle stroke. If this happens, the board will slow down and then "plow" water. With this construction, you get an inflatable SUP board with superior glide and acceleration ability.
Stability for performance™
For understandable reasons, SUP boards with this construction are more expensive than those with other constructions and today range from around SEK 10,000. If you are looking for an inflatable SUP board with superior stability and performance, this type of board is just right for you. Maximum air pressure 30 PSI (recommended pressure 18–20 PSI)
With this guide, we hope to create a better understanding of what today's technologies regarding inflatable SUP boards mean and that you will thereby become more confident in your choice of board, and at the same time get an insight into what differs in the different price categories.
If you have questions regarding this, contact us in our chat and we will help you further.
Magnus 24/02/2021 18:02