Roofing – Does Drip Edge go Under or Over Underlayment or Tarpaper at the Roof Eave
Does the drip edge metal go under the tarpaper, ice and water shield, or underlayment on the eave? Get the real story about drip edge placement. As seen in my other videos, we put it on top in Florida. I have gotten lots of negative feedback on this topic. So I did some hard research into the various building codes of the rest of the states and came up with a surprising (not so surprising) revelation. In this video, I walk through some building code language and see what the truth really is.
Watch my videos about drip edge here
Roofing – Drip edge Installation Walkthrough –
Roofing – Drip edge Installation – Just the cuts –
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Under.
Thanks, was wondering about that
That’s how we did It in west palm
Alberta code up in canada is underlayment on top at eave and flashing on top on gables/rakes.
I get it I am north I like putting ice and water on first and folding it down the fascia a couple inches that way that joint is protected. If I was gonna get crazy with it I would us peel and stick over the drip cap also.
Both. 6 inch under. 36 inch over. Vancouver BC.
Love your videos. Great info. Have a new roof (3 years old) roofer didn’t install drip edge and we are having issues. Can drip edge be installed retroactively? I have self adhesive ice and water barrier adhered to plywood. I know your review of codes in the north say the drip edge should go UNDER the ice and water barrier but is that even possible now? Would installation over the ice and water barrier work? and if so a 6 inch roofing cement band? Thanks in advance
In your case, the shingles should be hanging over the edge an inch or so. If not, you may be able to slide a piece of shingle between the starter and the ice and water. Or a piece of 1 or 2″ L metal. Really just as a diverter. This would at least tell you that it is or isn’t the problem.
The gutter isn’t backing up. We think the water as it runs down the shingles, and without a drip edge, is tracking behind the aluminum fascia (we see small drips on the bottom of the fascia), it then tracks inside the aluminum soffit (we see evidence of water drops coming out the air slits in the soffit)and flows toward the house and in behind the vinyl siding. As the water escapes from behind the siding through weep holes it trickles down behind the trim on a bathroom window where it is dripping inside the house at the top of a window frame …I have a whole new appreciation for the tenacity of the flow of water !
Yes, drip edge can be installed retroactively. The bottom 2 or 3 rows of shingles can be removed. However, the self adhered underlayment may not want to come up. If you are outside of Florida, then yes, the underlayment should go over the dripedge, as well as the ice and water if possible. The methods that we use here down south are not typical of areas where ice dams form. Is the gutter backing up? What kind of “issues” are you having?
@Practical Roofing Concepts I am in SoCal and replacing my fascia board (water damage), which has included ripping out the metal drip edge. Upon re-assembly I would like to use flashing tape (for additional protection) in conjunction with my existing 30# tar paper. What is the correct stacking order here?
I’ve been roofing in Florida since 2003. I understand the argument from our northern brethren about the drip, but that up north stuff doesn’t fly down here. We don’t have to worry about ice back up, we have to worry about hurricane winds. The felt, synthetic or peel and stick/seal underlayment goes on. Then you nail the drip to code, if you don’t, no inspection that day and you make no money. Then you use a 4″ spread of roofing cement that covers the deck edge of the drip and nail heads entirely on eaves and rakes. Water cannot get under the drip once you’ve sealed it with cement, then your starter shingle lays in the cement. The first course of shingles sticks to the starter shingle glue and bam, no leaks and it takes a very strong hurricane wind to pull it up. In Florida we also use 6 nails in every shingle, I believe they use 4-5 up north, once again, because of hurricane winds. The guy in these videos is spot on for where he’s roofing.
Thank you for the confirmation. Good Luck
Underneath the felt at the eaves,over the felt at the rakes is how they teach it nowadays for some reason..your correct though it was done differently for a long time long time
Agreed.
@Practical Roofing Concepts so the roofing cement is applied to seal the drip edge to the underlayment along the eaves?
Where as shingles should keep water off the underlayment in most conditions on shallow slopes and in windy condition water has been known to get under the shingle.
That’s where the roofing cement comes in. The way it is done down south, there is no allowance for water to get under the shingles.
@Practical Roofing Concepts if it is over any water that gets onto the paper goes under the edge and gets into the soffits
Not sure why that is, but I know this method is very stable for high winds. Also, there is no worry of ice dams in South Florida.
I’m in Canada. Have always put it over the ice and water. If you have done many re-roofs up here you would know why. I have seen too many roofs that the edge is all rotted due to no protection UNDER the drip edge. Have never seen a problem when it was installed over.
So most peoples commons sence would ask them ” why is florida the ONLY state with that standard when its not the only southern state”..?? If for some reason the roof fails some where up the roof.. The water would flow under the drip edge istead of allowing to do its job.. And the wood under the drip would stay wet which is how rot is created.. And there are alot of building code writers in florida spend more time in a office at a deck than up on a roof or ripping failing roofs off for repair… So what does that tell u?…. These fly by nighters man
Have torn off many roofs and very few have rot at the eave. The cutoff has to do with ice dams. Not a problem with ice dams in Florida. Also, must use roof cement if putting drip edge over the dry in.
I grew up in Florida learned and built houses ? in Florida and now I live in Utah And I was building a roof and everyone was like why are you putting drip edge over the tar paper??” Uh because that’s how we did it in Florida for I don’t know 30 years or so.