felt
#1
05-22-03, 06:22 AM
felt
I'm getting a new roof & some contractors quote a 15# felt while others say 30#. Do I need the heavier weight or is it just wasted $$?
Thanks for reading.
Thanks for reading.
#3
05-22-03, 01:30 PM
Member
Join Date: Jul 2002
Posts: 283
Likes: 0
Received 0 Likes
on
0 Posts
If you are using laminated shingles, you may want to go with #30 felt.
If you are using 3-tabs, I would go with #15.
Even most roofing manufacturers prefer that you use #15 under a lightweight shingle. 3 tabs are typically not heavy enough to weight down the felt. If you have any wrinkles or waves in the felt, it will show up under a 3 tab.
The design of a laminate and it's weight will hide issues with felt, a 3 tab will not.
For that matter, I suggest using a laminate also.
Good luck
If you are using 3-tabs, I would go with #15.
Even most roofing manufacturers prefer that you use #15 under a lightweight shingle. 3 tabs are typically not heavy enough to weight down the felt. If you have any wrinkles or waves in the felt, it will show up under a 3 tab.
The design of a laminate and it's weight will hide issues with felt, a 3 tab will not.
For that matter, I suggest using a laminate also.
Good luck
#5
05-23-03, 04:03 PM
Lets see. Felt paper is nothing more than recycled paper saturated with a petroleum product(liquid tar) to help preserve or provide a vapor barrior against dryrote. A 15# felt paper is generally use in roofing of homes. A 30# paper is generally used behind brick or a area that may be exposed for a while. 15# paper wrinkles easily under humid conditions, 30 # takes alot more. It's all a matter of preference. I'm a roofer, I have 15# on my house. If you won't be covering it up the same day, you may want to consider 30#.
