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Thermal Shock

Old 01-08-2015, 04:04 AM
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Default Thermal Shock

It got down to 9*F last night. At 3AM I'm dead asleep and was woken up by the sound of shattering glass in my bedroom. One of my windows shattered from thermal shock when the heat kicked on.

**edited to correct photo orientation**
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Last edited by Because Boat; 01-08-2015 at 05:39 AM.
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Old 01-08-2015, 04:07 AM
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Weird, it was -6 at my house. That window had too much gas inside?, if you spray great stuff expanding foam around the window it dose not allow the window to move with the house. Take a look at the shims and if there is spray foam around the inside casing. If the windows in the home get tough to open in the winter they are shimmed too tight.
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Old 01-08-2015, 04:41 AM
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Just the inside glass broke out?
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Old 01-08-2015, 05:07 AM
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how cold did you let it get inside the home? And, did the heat blow directly on the glass?
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Old 01-08-2015, 05:24 AM
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Originally Posted by Free Liner View Post
Just the inside glass broke out?
Yes, just the inside pane.

Originally Posted by chimmike View Post
how cold did you let it get inside the home? And, did the heat blow directly on the glass?
Heat in the house is automatically controlled and set at 67 when we go to bed. I have a cellular/honeycomb shade over the windows, plus there is a blackout curtain over this particular set of windows. The windows are old and I doubt there was any real insulation factor on the pane. I suspect that the window got real chilled due to the poor R factor and then some of the heat snuck up behind the curtain and shade and cause the thermal shock. The heating vent is on the other side of the room so it was not directly on it.
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Old 01-08-2015, 05:31 AM
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Someone installed the window upside down! When the argon turns upside down it turns into nogra gas which is hard to find on the gas tables but your lucky to be alive my friend. Have a beer and light a cigar and get ready for tonight and pray non of the other windows are full of nogra gas explode.
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Old 01-08-2015, 05:36 AM
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Originally Posted by swampu View Post
Someone installed the window upside down! When the argon turns upside down it turns into nogra gas which is hard to find on the gas tables but your lucky to be alive my friend. Have a beer and light a cigar and get ready for tonight and pray non of the other windows are full of nogra gas explode.
I just noticed the photo is rotated 90*. Freaking iOS.
This is a side-by-side sliding window, not a double hung.
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Old 01-08-2015, 05:38 AM
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Originally Posted by swampu View Post
Someone installed the window upside down! When the argon turns upside down it turns into nogra gas which is hard to find on the gas tables but your lucky to be alive my friend. Have a beer and light a cigar and get ready for tonight and pray non of the other windows are full of nogra gas explode.
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Old 01-08-2015, 05:39 AM
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I've never heard of that
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Old 01-08-2015, 08:25 AM
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Are the windows tinted?
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Old 01-08-2015, 08:34 AM
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Originally Posted by davedowneast View Post
Are the windows tinted?
No. Why do you ask?
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Old 01-08-2015, 08:39 AM
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Originally Posted by willie g View Post
I've never heard of that
Ummmm..... Window upside down, and argon spelled backward is nogra -- I think you just took the bait !
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Old 01-08-2015, 08:47 AM
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Originally Posted by davedowneast View Post
Are the windows tinted?
They are replacements though.
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Old 01-08-2015, 08:58 AM
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Are those vinyl, vinvl will contract more and faster the wood. I took mine out and put wood frame replacements in, the popping and creaking of the vinyl would drive me crazy at night.
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Old 01-08-2015, 09:02 AM
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Originally Posted by crashl View Post
Are those vinyl, vinvl will contract more and faster the wood. I took mine out and put wood frame replacements in, the popping and creaking of the vinyl would drive me crazy at night.
Why not fiberglass framed?
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Old 01-08-2015, 09:08 AM
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Yeah, they're vinyl. They're shitty but they beat the old aluminum framed windows that were installed when the house was built in the 50's.

The nice thing about these windows is that they are an in-stock item at any hardware store around here, At Home Depot, Ace, Lowe's, Sears, etc., for $89 I can go and grab a new window and just replace the broken sash. Then I'd have a spare sash in case I ever needed one again.

Or I can go to any one of the 17,000+ homes in my area and find someone who is replacing their windows with a better window. I can take one of their old ones to fix this.

When it's time for the home addition, all windows will be replaced with ones of much better quality.
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Old 01-08-2015, 09:09 AM
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It's a 128 year old house and I try to match what ever I have to replace to what was from the period.
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Old 01-08-2015, 10:34 AM
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Originally Posted by westhunt@airspd.net View Post
Ummmm..... Window upside down, and argon spelled backward is nogra -- I think you just took the bait !
I was referring to the windows breaking because of heat
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Old 01-08-2015, 11:20 AM
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I had some nogra gas after eating some of my wife's cooking last night.
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Old 01-08-2015, 11:28 AM
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I had that happen once, tried to blame the boys as they were home alone... none fessed up.

I think it's not as much the shock but the different expansion/contraction rates of materials. Mine was replaced by the builder (free), they also suggested what I said, and a slight flaw that was there to start the cracking.
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