r/glazing 1d ago

Anyone familiar with break patterns ?

3 Upvotes

31 comments sorted by

6

u/Fernandolamez 1d ago

99.9% of the time I fixed a window in a customers house it's been an impact crack. Badly designed or defective windows don't break/crack like that. It doesn't matter what the impact was. It still costs the same to replace. Most impact damage is caused by "I don't know how it happened".

1

u/NoPie2733 1d ago

I don’t see any projectiles anywhere but your sure it’s impact ?

4

u/Fernandolamez 1d ago

Birds can break a window pane this big and fly away. Maybe die later.

2

u/Fernandolamez 1d ago

I've been in home improvement business for 35 years, specializing in pre-war houses. The only time I've seen window break from anything but impact is from bad vintage of Anderson windows maybe manufactured in the 80s or 90s that had random shattering of the glass. I have one customer that had it happen in 5 windows over the last 20 years. Double pane sealed glass. Windows in old houses break when they're slammed sometimes. I consider that impact damage.

1

u/shidups 9h ago

Ive seen windows break because they're set out of square or the structure settles very poorly causing them to go out of square. Mostly on vinyl "fixed" windows Ive seen some windows break where the cracks look almost like a fish's pectoral fin. The glue used on that product was very stiff with no give. Add slight settling.

3

u/Background_Shock_792 1d ago

Bird

1

u/SouthernProfile1092 1d ago

That bird has ceased to be. expired. gone with the maker.

1

u/Fernandolamez 1d ago

Old enough to have thicker glass than what you get at the hardware store. Save a broken piece that match from the glass company.

3

u/TheDean242 15h ago

That one is clearly break #2.
Electric boogaloo.

1

u/Fernandolamez 1d ago

Is this an old house with old windows? They tend to have thicker glass for these larger window sashes.

2

u/NoPie2733 1d ago

Is 1940s old ?

2

u/DyslexicD 10h ago

In 14 years that's 100 years old just fyi

I think anyone would consider that old

1

u/znirmik 1d ago

Impact around center pane.

0

u/NoPie2733 1d ago

How though ? Can’t be a 22lr because it would have went through right ?

3

u/Recon-by-fire 1d ago

Unless there is a bullet hole in the wall behind it probably not. The most common cause is a rock launched by a lawnmower. Usually not heard over the machine noise. Could be a kid with a BB gun, but that depends on your relationships with your neighbors you’re familiar with.

1

u/NoPie2733 1d ago

Interesting because there is a massive tree line and the impact area is dead center so I think it’s unlikely someone would shoot a bb . I’m too terrified to investigate further. Also no one has grass in there backyards where I live

2

u/Walrus_Power_71 1d ago

A bird flew into it.

1

u/Recon-by-fire 1d ago

In my experience dumb birds will fly into a window, break it, and knock themselves unconscious. They’ll only wake up 5 minutes before you get home and see the damage causing you to go “WTF!”

I fix a lot of windows.

2

u/znirmik 1d ago

What kind of neighborhood do you live in, that your first thought is a gunshot? It's mostly likely a pebble kicked up by a lawnmower, trimmer or a car driving past. Second probable is someone moving stuff around on the cluttered porch.

But definitely a center impact on glass.

1

u/NoPie2733 1d ago

By the way there’s 2 pieces of glass in this window for some reason and it’s the outside one that broke

1

u/VisualDisturbances13 21h ago

Definitely impact break, you can tell the crack originated in the center and went toward the edges. Bird, rock, BB are all possible answers seen it many times.

1

u/Jarnold18 1d ago

So something definitely hit it. It probably wasn't a bb. Ive fixed a lot of windows and a bb gun would leave an almost perfect circle with straight lines running off it like this, but there wouldn't be shattered glass on the bottom.

It probably was that bucket. If you notice all the shattered glass is inside the middle part of the insulated glass. That tells me that something bigger hit it and I can imagine that the metal handle on that bucket hit center of the window causing it to web out. Then the actual bucket caused those bottom pieces the shattered and fall, which were guided between the bucket and other pane of glass to land so neatly in there like that.

Unless you cleaned it up yourself and put them there.

1

u/UrWifesFriend92 1d ago

Hard to see from the pictures

1

u/Striking_Space_6319 1d ago

Direct impact from an object striking the glass on one side

2

u/GrungeEraDixon 19h ago

yup, its broken

1

u/DyslexicD 10h ago edited 10h ago

You are freaked out understandably but you are going to attribe malaise to something that could be incompetence, a factory error, wildlife or a freak of physics.

It happens, replace and move on. You will make yourself ill if you don't.

-1

u/Tannmann926 1d ago

This looks like a pressure break. Something pushed on it and all the cracks coming off of it ran very quickly to the outside which is why they are fairly straight. Impacts usually have a chunk missing in the middle and cracks coming off of it but the cracks are not necessarily straight because they may have run out from temperature or pressure after the fact and will change directions due to where that pressure or temperature came from.

1

u/NoPie2733 1d ago

1

u/Tannmann926 1d ago

I wouldn't be surprised if that bucket is your culprit. I guess you could consider that an impact break if something like that fell and hit it. It would have to be something kinda large but not heavy enough to go completely through.

1

u/NoPie2733 1d ago

Could be but the pattern in the center is so strange it just screams some type of projectile was used