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Posted

I have an issue that the property tax data, prior reports, everything shows 2006 - but the roof looks like it may be 1997 stamped and the HVAC manufacture date (they could have installed old equipment) definitely shows 1998.

Posted

Were there any markings as to whom the manufacturer is? If it is a Firestone product they use a three digit day followed by two digit year. Other words yours would be the 341 day of 1997.

Also did you by chance check the date code of the window glazing panels?

Posted

oooo...

Where would I find a date code on the windows? Is that normal - that is a new one for me. On most storefronts?

Very interesting!

Most storefront windows and doors have a date code. The main one's I find without a code are cheap replacements. As Nolan indicated, it is typically stamped on the aluminum channel between the glazing panels.

Posted

Never seen that code-scheme... I wipe the material with my fingers to get a sense of degradation... Check seam-condition, flashing penetrations, etc.. etc.. Hard to tell the 'age' based on the condition in that photo... but could be 1997 date of mgfr..

Posted

Unless you know who manufactured the glazing the date codes are going to be useless. If you really want to know the age of the glass look for the 'bug' (the etching that certifies the glass is tempered) on the entry door.

It should be relatively easy to judge 8-10 years of aging on commercial building components. A decade equals an enormous amount of abuse.

Posted

That stamp is pretty legible. If you got that code on a flat area of the roof that gets direct sunlight, I would say that is a fairly new roof. I would guess 3 to 4 years tops. Maybe less.

Posted

This was tagged on an EPDM roof today. Immediately thought of this thread.

They said the roof was about 5 years old. Looked about right to me.

Click to Enlarge
tn_2013321222933_040%20epdm.jpg

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