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Vinyl Windows - What's Wrong With this Picture?

By
Home Inspector with HABITEC Home and Building Inspections, LLC

Nashville Home Inspectors - Window Locking Hardware Issues - 2/19/11

Everbody loves vinyl windows, right?  Look good, won't rot, energy efficient.  You might think they are perfect, right?  Not quite.  Look at the picture below.  What's wrong?

HINT:  A window lock usually involves two components, one on the lower sash and one on the upper sash.  A locking device needs to engage the two components together.

Window Lock Missing

ANSWER:  The curved locking arm you see extending out to the upper sash has missed its mark.  Normally this component swings into a slot or under another component to engage the upper sash and lock both windows in the closed position.  Not this time.  In this case, the locking arm has missed the bottom of the upper sash.  This miss will now allow the lower sash to raise unimpeded despite the locking control lever being in the "locked" position.

How can this be you say?  In this house, some of the vinyl windows on the south, east and west sides of the house were in direct line with the sun.  Over time, the sun caused the vinyl windows to warp, allowing the upper sash to move, or bend, to a position that allowed the locking arm to miss the lower edge of the upper sash that it would normally engage.  It should look like the picture below, taken from a window not in line with direct sun.

window lock working

Thank you, 

Richard Acree

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http://habitecinspections.com

Comments in this blog posting are the copyrighted intellectual property of Richard Acree, President, HABITEC Home and Building Inspections, LLC, and contributing members of the Active Rain Real Estate network, and are intended to educate and otherwise assist home owners, sellers and buyers, building owners, sellers and buyers, realtors, real estate investors, property managers, and lenders in the process of owning, buying or selling homes or commercial buildings.  HABITEC is a residential (home) and commercial building inspection company serving Middle Tennessee including Nashville, Brentwood, Franklin, Murfreesboro, Smyrna, Mt. Juliet, Hendersonville, Dickson, Belle Meade, Columbia, Spring Hill and more!  In addition to building inspections HABITEC offers Environmental Services for mold assessments, radon testing and water quality analysis.  Additional information about HABITEC can be found on our website at http://habitecinspections.com, or call 615-376-2753. 

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Comments (5)

Randy Benefield
Trademark Property Services & Real Estate Inc., CalBRE, 01976861, 01442405 - Petaluma, CA

thanks for the information. I will remember this when I am with clients and even when I am updating my own windows.

Feb 19, 2011 10:04 AM
Katherine Fornale
REMAX REALTY 9 - Howell, NJ
SFR, GRI

I've noticed this myself in some homes with older windows Richard.  Is there a way to fix them or do they need to be replaced?

Feb 19, 2011 10:19 AM
Robert Dirienzo
HABITEC Home and Building Inspections, LLC - Franklin, TN
Home Inspections - Nashville TN

Hello Katherine,

Thanks for your comment.  I think it may be able to be fixed, at least as far as the lock goes.  There may be an attachment that can be mounted on the upper sash to engage the lock arm.  But, there also may be an issue with the seal of the windows where the two window frames come together.  If that seal is not intact, the windows may allow significant leakage, rendering them ineffective for control of conditioned air.  A service technician would have to make the final call.

Thank you,

Richard Acree

HABITEC Home and Building Inspections, LLC (Nashville, TN)

http://habitecinspections.com

Feb 19, 2011 10:28 AM
Jim Smith
The Property Management Company - Round Rock, TX
Broker,CRS,GRI,RMP,CNE,TRLP

This is a common issue with these windows.  While Texas avoids most of the severe winter weather, our heat more than makes up for it.  These windows cause an ongoing maintenance issue in property management; and unfortunately, we are the ones that must break the bad news to owners.

Feb 19, 2011 10:32 AM
Robert Dirienzo
HABITEC Home and Building Inspections, LLC - Franklin, TN
Home Inspections - Nashville TN

Hi Jim, thanks for your comment.

I suspect vinyl windows must be challenged significantly in warmer climates like Texas.  I would be curious if a manufacturer has come up with a suitable solution.  One may be to install another ledge device the locking arm could engage.  But if the sash still warps, there is still the issue of integrity of the sash seam.

Thank you,

Richard Acree

HABITEC Home and Building Inspections, LLC (Nashville, TN)

http://habitecinspections.com

Feb 19, 2011 11:45 AM