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bronco2 09-24-2009 07:31 PM

15lb felt or synthetic
I need some opinions on which product works best for underlay under a metal roof. 15lb felt or the new synthetic stuff. Any opinions are welcome lets be nice though. I know the synthetic underlays are a lot more money, but are they that much better.

mics_54 09-24-2009 07:48 PM

For metal I usually prep the roof to manufacturers recommendations....which is what our code says to do.

bronco2 09-25-2009 09:26 PM

Yup, talked to the supplier and he says to use the synthetic stuff.
Thanks Mics

MJW 09-26-2009 11:31 AM

Of course the supplier will tell you that.

I would say with honesty that only SOME of the synthetics are better than felt, and I haven't tried all of them. Feltex lays very good along with Shinglemate from GAF and Certainteed's Roofers Select. The cheapo 15 lb felt is almost useless.

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