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Old 10-09-2010, 09:14 PM   #1
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New shingles thinner than old!


I just had IKO 40 year shingles installed on my house.
The old shingles were IKO 20 year shingles!

I compared the thickness of the old vs. new and noticed that the new 40 years shingles are thinner than the old ones.

Have they improved the composition of new shingles that would make them last longer?

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Old 10-10-2010, 06:59 AM   #2
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New shingles thinner than old!


They have switched from an organic filler to fiberglas and i'm sure that would make a noticeable difference in thickness.

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Old 10-10-2010, 09:06 AM   #3
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New shingles thinner than old!


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They have switched from an organic filler to fiberglas and i'm sure that would make a noticeable difference in thickness.
Thanks, Sly! What you say makes sense. Have they done this to compete with metal roofing?
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Old 10-10-2010, 06:26 PM   #4
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New shingles thinner than old!


No, they had to make the switch because the organic fillers experienced high volume premature failure.
Once manufacturers had to stop using asbestos they switched to either an organic filler or fiberglas, the organic fillers just don't cut it.

I don't believe a 40 year shingle properly installed will hold up as long as a properly installed metal roof, 50 year / life time shingles come a lot closer but they do not hold up as well aesthetically in the latter end of the life span as metal doe's.
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Old 10-10-2010, 08:42 PM   #5
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New shingles thinner than old!


Fiberglass shingles were on the market long before metal became popular. Fiberglass shingles have been around since the 70's or so I hear. I was born in the 70's. Yes metal roofing has been around ALOT longer, but seldom used as a complete residential roofing system until recent years. Very very few homes in my area have metal roofs either panelized or metal shingles. A good metal roof carris a huge upfront investment, while a cheap metal roof just isn't worth having.
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Old 10-10-2010, 10:06 PM   #6
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New shingles thinner than old!


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Fiberglass shingles were on the market long before metal became popular. Fiberglass shingles have been around since the 70's or so I hear. I was born in the 70's. Yes metal roofing has been around ALOT longer, but seldom used as a complete residential roofing system until recent years. Very very few homes in my area have metal roofs either panelized or metal shingles. A good metal roof carris a huge upfront investment, while a cheap metal roof just isn't worth having.
Yeah the 70's is when the manufacturers were forced to stop using asbestos, they already new the day was coming in the 60's tho.
They switched to fiberglas, but a few manufacturers toyed with organics and still do, not all organics failed.
IKO and Certainteed sold more of them in the residential field than any of the others and they both did so on a large scale up to as recent as 05 - 07.
So an IKO 40 yr shingle on the market today would have an noticeable difference than an IKO 40 yr shingle produced by them 10 years ago.
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Old 10-10-2010, 10:33 PM   #7
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New shingles thinner than old!


My old IKO shingles were installed about 18 years ago. Say 1983, so they were likely fibreglass also, then.
I can't imagine that the new shingles will last anywhere near 40 years. Or even 30 years!
They seem to be flimsy compared to the old ones.
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Old 10-11-2010, 07:10 AM   #8
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New shingles thinner than old!


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My old IKO shingles were installed about 18 years ago. Say 1983, so they were likely fibreglass also, then.
I can't imagine that the new shingles will last anywhere near 40 years. Or even 30 years!
They seem to be flimsy compared to the old ones.
No, they were likely organic in 83' and fiberglas now.
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Old 10-11-2010, 04:05 PM   #9
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New shingles thinner than old!


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No, they were likely organic in 83' and fiberglas now.
OK! Thank you! They were 20 year shingles, and they almost lasted that long.
Gues I can't complain!

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