Warping introduces gaps that allow air and moisture infiltration. It also affects how frames, sashes and hardware fit together making the windows difficult to operate. The replacement window contractors at Renewal by Andersen® of Cape Cod take a look at what causes windows to warp, and what can be done to fix them.
What Causes Window Warping?
Warping is caused by changes in humidity and temperature. Windows made from wood and vinyl are the most vulnerable to these causes. Wood fibers, in particular, are asymmetrical, and therefore do not revert to the same shape once subjected to changes in temperature. While vinyl does not absorb moisture, prolonged exposure to heat can soften it and cause it to lose its shape.
In addition to noticeable distortion, common indications of warped windows include sashes that won’t sit flush with the frame, and cracks in the glass caused by the sash exerting too much pressure. Warping may also create gaps between sash and frame that result in drafts that are most noticeable during the winter season.
Can Window Warping Be Fixed?
Warping is not reversible, but it is possible to fix some of the problems it has caused. Warped wood windows can be made easier to operate by planing the affected areas and making adjustments to the window hardware. Additional weatherstripping can be installed on areas where warping has created gaps. Vinyl windows typically require a full replacement if the frames are warped.
Is Window Warping Preventable?
If you are planning a window replacement, there are some steps that you can take to prevent window warping. One is to make sure that you choose materials that are not vulnerable to heat and humidity. If you must choose wood windows, make sure that it is made with properly-treated wood and that you understand its maintenance requirements.
Alternatively, choose materials that are inherently warp-resistant. Renewal by Andersen replacement windows are made with one such material, Fibrex®. Made from wood fibers and polymer, Fibrex combines the strength and durability of treated wood, the low maintenance requirements of vinyl, and the warp resistance of composites like fiberglass.
Renewal by Andersen of Cape Cod is one of the most trusted replacement window companies in Cape Cod, MA. Find out more about the benefits of Fibrex material frames by calling us at (508) 936-1171. You can also fill out our contact form to schedule an appointment.