The stability of a glass windbreak depends on the glass, posts, fittings and fixings being designed for the wind loads at the site. The whole structure matters, not just the thickness of the glass. Thicker glazing alone cannot compensate for inadequate supports or fixings.
A tall windbreak on an exposed balcony or terrace is subject to greater wind forces than a lower screen in a sheltered position. Its fixings must therefore be anchored to a load-bearing structure, as decking boards, paving slabs and other surface finishes may not be sufficient. If the screen moves or vibrates noticeably in strong winds, check the fixings, posts and brackets.
