Window seal failure is one of the biggest concerns we've come across with cheap windows.

When seals fail, either due to cheaply made products or manufacturing defect, any insulating gases that were inserted between the panes of glass for energy efficiency literally float away.  This is why you may feel considerable heat or cold coming through the glass.

When the insulating gas leaks out through a broken window seal, over time it allows moisture to enter and build up, causing foggy and/or streaky windows.

In the winter, this moisture can freeze which is how ice forms between the glass panes.

Many homes built before the 1960's used single-pane glass and either wood or aluminum frames.  If your home still has these types of windows, it's definitely time to replace them with something more energy efficient because single-pane glass will keep some of the elements out, but will do almost nothing to help keep your home comfortable year-round.  Any forced heat from your furnace will escape right through the glass.

Old windows or cheaply made windows more than likely lack Low-E coating.

Low-E is a microscopically thin coating that is applied to the glass to help block out harmful UV and infrared light while allowing in visible light.

A lack of Low-E coating can cause furniture and flooring to fade and may be another reason you feel considerable heat coming through your window on a hot summer day or feel considerable cold through the glass during the winter.

Hardware failure is another common issue with failing windows, especially in casement windows which crank open.

Cheap hardware may break down over time or rust and seize up making operation of the window extremely difficult.

This can create security issues for you and your family as well.

Windows that have stainless steel hardware and resist rust, like Kehl windows, are an ideal choice.

The installation of a window is just as important as the window itself.  If you have poorly installed windows, it can negatively impact the performance of the window. 

For instance:

• If the window is not installed square and level, over time you may notice difficulty opening, closing and locking the window.
• Improperly locking and operating windows pose a security issue for your home.
• If flashing, trim and caulking are not installed correctly around the exterior of the window, rain water can penetrate the opening.  Over time a build up of moisture will cause rot and mold within the walls leading to replacement of more than just the window.
• If you feel a draft between the window and the wall, improper insulation or installation methods may have been used.

WOOD WINDOWS:

All windows in your home need some TLC occasionally, and some types of windows need more than others.

Wood windows, although beautiful, are notorious for needing the most amount of care and maintenance, since wood tends to rot and warp.  Wood needs to be sanded and stained every few years to keep it looking new.  If this routine maintenance doesn't happen, moisture can begin to seep into the wood, causing mold growth and eventually rot.

Other materials like composite, fiberglass and vinyl need less maintenance than wood, but as a rule of thumb, should be cleaned and hardware lubricated every six months or so.

If your window is in a spot that exposes it to more than normal grime, yard debris, moisture or other environmental factors, this maintenance should be performed more often.

If you don't care for your windows, they can fail prematurely, costing you more money and headaches in the long run.