Ice shield or not?


#1

The guy that is going to roof my house says that he uses flashing in the valley’s and not ice / water shield - is that good? He told me that if you know how to roof then you don’t need to use it…?

Also he uses GAF Cobra Rigid vent and I read that Air Vent2 is better but they look almost the same other than a piece of fiberglass on the bottom side of the Air Vent. I thing he likes GAF because they have nails already on the vent so it is less hassle.


#2

Cobra ridge vent is ok.
As far as the valley goes, I’m certain in this day and age manufacturers installation guidelines require use of water and ice in a valley. Even if he uses an open metal valley, they still want W&I underneath. It’s a good idea in my opinion. It may void your manufacturers warrantee if he doesn’t use it.


#3

What brand is the best, or is it pretty much the same? He told me that if I buy it he will install it. I seen Owens Corning at Lowes but I did not see any at the Home Depot. I am going with the GAF-Elk
Timberline® Prestique® 30 High Definition® Roofing Shingles.


#4

ice & water shield is recommended by the manufactures in the valleys, but not required. it will not void your warranty either way.


#5

You probably don’t need Ice & Water shield in Georgia at all.
Unless it is required by code.


#6

I like to use in in valleys even though it’s not always required.


#7

Tinner and underlayment?He don’t need no stinkin underlayment! :smiley:


#8

Tinner and underlayment?He don’t need no stinkin underlayment! :stuck_out_tongue:

I was expecting that from somebody! :smiley:

For the OP, I use it. I don’t rely on it.

I knew that hit was coming! Thanks John. :smiley:


#9

[quote=“tinner666”]Tinner and underlayment?He don’t need no stinkin underlayment! :stuck_out_tongue:

I was expecting that from somebody! :smiley:

For the OP, I use it. I don’t rely on it.

I knew that hit was coming! Thanks John. :D[/quote]


#10

ditto Ax,

hurt nothin puttin it in, doesnt.
make alot of people happy puttin in, does.

gweedo.


#11

Just use it. Have had folks that still want the flash AND the W&I) I give it to them, but dont really suffer problems in the valleys I build and one of the reasons I believe is the W&I. Its good insurance all around and stands well on it’s own. Stay away from Georgia Pacifc’s version, but other than that, all the other different brands (and I have tried them all I think) have good baseline performance. I am partial to the Tamko or GAF if you dint want to pay the uptown pricing for the original Granndaddy, Grace Corp. (VERY good performance). Good cheap version that I have found is Henry’s Eaveguard if it is available in your area.


#12

Thanks for the info. I think I will use GAF if I can find it (don’t know if the distributors will sell it to me being that I am not a roofer?)


#13

that grace stuff is some hardcore stuff not cheap but it works great – you dont need it in the valleys just flashing and a good shingle job it wont leak – i like weaving my valleys i personally like the look and ive NEVER had a leaki complaint


#14

:twisted:


#15

A good roofer could of course get away with a lot of things, but it does make good common sence to use it in a critical area like a vally. we always do and have for years. It pays to do things overkill on somthing as important as your roof.