Jalousie window while keeping out water was deemed unsatisfactory by the study's authors. Jalousie windows also have several other drawbacks. Traditional style jalousie windows offer poor overall resistance to water penetration and drafts and are difficult to positively secure, as their slats are easily and silently removed. In addition to the inability to keep out water, they do not provide a secure barrier to keep air conditioned air inside. Also, the metal parts which make up the windows moving mechanism are prone to corrosion in humid environments, leading to damage such as broken or missing cranks. Jalousie windows are objects of scorn
Residencia Armstrong-Poventud located above the podium and articulated in an ionic pilaster order. Each arch-window houses folding jalousie shutters. At the upper level there are four Ionic pilasters with pedestals resting on a continuous horizontal string-course. The three openings are symmetrically arranged and equally proportioned and articulated: a simple surround with a keystone frames a wide arch, opening out to a balcony through wooden jalousie doors. Decoratively etched clear glass lights occupy the tympanym over each opening. The first and third bay balconies contain waist-high decorative cast-iron railings and the wider central balcony consists of stone balusters and rails supported by the