When the rain passes through the seam of the canvas of a retractable awning it becomes a big concern especially when you have spent a few thousand dollars. We want to be certain that our canvas will last a long time and that water will not pass through the seam.
For centuries the traditional sewing for awning canvas is done with machines with a single or double needle. Many companies until nowadays use these machines, but what makes the difference is the quality of the needle and the thread used.
Nylon, Polyester or Polyester Cotton
The nylon or polyester threads are popular but the nylon thread is not recommended for awnings because it is not resistant to UV rays. However the polyester naturally repels water. It quickly dries and absorbs 90% less humidity than nylon. It has a high UV, chemicals and heat resistance, that’s why it’s suitable for the manufacture of awnings.
What happens when rain falls on an awning canvas and we used a polyester thread wrapped in cotton?
Certainly the first days using the awning we will see rain droplets passing through the seam; however, we must give some time at the thread to absorb rain water and dry; and it’s after several days that the thread expands and fills holes of the needle.
It’s the cotton wrapped polyester that will give the best result. Polyester has all the features except to swell to plug the holes.
Remember that water infiltration through the seams is never guaranteed when you buy an awning. A waterproof wire and quality is necessary, because if you don’t have this quality of thread; waterproofing seams will be needed and your awning will have a shorter lifespan.
Always check these details before purchasing an awning! At Ombrasole we use now the new technology which is welding that’s why a visit to our showroom is a must!