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yellowkid 06-21-2013 12:28 PM

figuring window clear opening?
Is there a simple way to calculate the clear opening for a new window? I understand what the calculation represents; its just that I am designing a new addition and want to be sure the 2nd fl bedroom windows meet the egress standards, and when I go to mfg.'s sizes i see nothing on this! obviously rough openings etc that they list don't do it. am i missing something obvious?

Willie T 06-21-2013 02:24 PM

You can easily look up the codes, but here's a simple cartoon type thing for you.

yellowkid 06-21-2013 02:38 PM

thanks and that does say it! my bad on the original post but, what I meat to say was how do I figure out the clear opening on a manufacturer's window -- i did look up the code first, but was wondering how to figure out if a given window meets the code as I look at the manufacturer's specs.

Windows on Wash 06-22-2013 09:11 AM

Email or call them.

Most have egress calculators for their windows and will be able to tell you what the net clear dimensions are.

Willie T 06-22-2013 10:29 AM

A point here that so many DIY people (and even pros) miss is that just "meeting code" with an installation can sometimes be just downright stupid and dangerous.

What is the entire point of an egress window? To keep the inspector off your back? To get away as cheaply as possible? Or is it so that you won't have to one day stand at the graveside of a loved one wishing you had ONLY given them a realistic and workable escape from the fire that took their lives?

This is one of those times when we have to actually THINK, and go way beyond just squeaking past the codes. And if you are thinking this way, you will probably be looking at windows that FAR EXCEED code requirement.

When you do finally get those egress measurements, you should automatically be asking, "OK, what can you sell me that's at least twice as good as that?"

forcedreno2012 06-22-2013 12:55 PM

Really good point Willie and one that should be added to the code.

We looked at houses before we bought the one up north and some of the egress windows were tiny. I am a shorty skinny Minnie and on a few of them even I could not have gotten through without some difficulty let alone the hubby who is a big boy.


Willie T 06-22-2013 11:02 PM

And it is also not just you and yours getting out... but the ability of a fully garbed fire fighter, complete with big jacket, boots, big hat, mask, and oxygen tank on his or her back... carrying an ax and maybe dragging a hose to be able to pass easily through that opening. Both coming and going.

Gary in WA 06-23-2013 11:49 PM

Egress window charts;


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