Two different types of fly screens are known as extendable: extendable fly screens with roller box and extendable fly screens with rigid panels. The only common element in these fly screens is the ability to expand themselves to allow opening and closing of the fly screen, but they are very different in the strength of the structure, safety and efficacy against insects.
The extendable fly screens are also called stretchable fly screens or rolling fly screens, and they are an high quality product. The frame is made-to-measure according to the space where you want to install the fly screen, and they have a horizontal or vertical roller tube in which the mesh of the fly screen rolls up. It’s therefore a fly screen permanently anchored to the window/door and characterized by maximum mobility, since it can be completely opened or closed instantly whenever necessary by means of a spring or a chain system. This kind of fly screen guarantees the maximum practicality, the maximum safety and resistance to impact and atmospheric agents, the maximum efficiency in terms of protection against insects and reduced space for installation: once manufactured (made to measure) and installed (fast and simple) it is the kind of fly screen that guarantees the highest level of protection and comfort.
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The subject is completely different for the other type of extendable fly screens: telescopic fly screens that are low quality products not sold by Noflystore because they don’t have the qualitative characteristics able to guarantee sufficient levels of strength, safety and protective efficiency. This type of extendable fly screen is made up of an aluminium or PVC frame, has a fixed height and two or three panels that slide horizontally and enlarge the fly screen in a way that covers all the width of the window; the fastening of this kind of fly screen is done thanks to the dimension of the panels, that will slide in the frame of the roller shutter (fitting downwards with the window threshold, and upwards with the roller shutter itself, which should have been closed up to frame of the fly screen).
As you can see, the fixing system does not guarantee stability of panels on which the fly screen is placed, since the panels can easily get out of the frame in case of a sudden or strong wind, causing the fall of the fly screen.
Furthermore, the fixing system does not allow any autonomy in the opening of the roller shutter; once the fly screen is installed, it leans against the roller shutter and does not completely close, not allowing the full light and air to come in and not completely protecting from the sun.
Another disadvantage of this fly screen is the amount of space: every time you need to close the rolling shutter you have to remove the fly screen at the same time and put it somewhere, wasting a lot of space in your house.
In conclusion, the main disadvantage in terms of protective efficacy lies in the fact that such extendable fly screens protect just the lower part of your door/window, while the upper part is essentially protected only by the roller shutter, which has holes that could not prevent insects from entering your home.
In the Noflystore catalogue you will only find high quality extendable fly screens: take advantage of our current offers!