Thread and seam
The quality of the fabric is important when choosing the right material and equally important are the seams that hold the fabric together. The optimal thread and sewing technique must be applied. We apply the flat fell-seam, a sewing technique that makes the seams very durable. In order to give the thread a solid and thorough grip, the flysheet is folded so that the seam consists of four layers of abric that every stitch goes through..
The thread we apply to the seams is the Amann Rasant 75 WR thread from Germany. One of its properties is that it expands when it becomes wet (an expansion thread). This means that the holes in the flysheet where the thread has gone through, will be tightened as the thread in fact expands and covers more of the hole thus makes it more waterproof. In addition we also use a special cooled needle in the actual sewing process. This allow us to minimize the pinholes caused by the needle when sewing. This applies especially to the silnylon fabric that is very elastic and withstand considerable stretching without being damaged. With that said. With the stretching of this fabric, the pinholes will also stretch and become less waterproof. That is why we think it is also appropriate to seal the seams on the silnylon fabric with a silicone mix to make sure the seams are 100% waterproof. The silicone mix will also penetrate through the seam and strengthen it. The size of the stitches are also carefully considered. Many wrongfully believe that the denser the stitches are, the stronger the seam is. This is not correct and it is essential to find the right size. If the stitches is too big, the seams will become weak. Are the stitches too small and dense there will be too many pinholes, which will weaken the seams. Based on our findings we have decided on 10-12 stitches within a seam of 3 centimeter. This is where you obtain the most resilient seam