Common Building Defects

Defective Windows

This site requires JavaScript and ADOBE FLASH PLAYER VERSION 10 or ABOVE.
Please visit Adobe website for the latest version.



Common defects in traditional steel windows usually arise from rusty frames, and deterioration or loss of putty or sealant to hold the glass panels. Aluminum window system involves assembly of a certain number of components by rivets, screws, hinges and fixing anchors. These accessories are prone to failure. The friction slide hinges are delicate parts of the window which demand close attention to avoid accumulation of dirt that obstruct the sliding motion and mild lubrication to reduce friction of the moving parts. Without the required servicing and maintenance, hinges may become too tight to operate, rivets may loosen up and screws may be corroded that shorten their life-span. When excessive forces are applied to operate such windows or when they are subject to wind load, distortion or dislodgement of the window sashes or even the frame may result, causing fatal or serious injuries to the public.


Steel windows are subject to rusting and should be regularly re-painted with primers and re-finished. Putty for holding glass panes should be maintained. Hinges should be regularly lubricated and replaced if necessary to avoid dislodgment of sashes. If the components of window were broken, owners should immediately replace damaged parts. In the process of replacing fixing components such as screws and rivets, measures against bi-metallic action leading to corrosion must be taken to avoid direct contact between two incompatible materials. A common example of bi-metallic action is between aluminum and stainless steel.