Drip Edge Question-a Little Help

advanced_energy

I am a window guy and KNOW NOTHING about roofing. a contractor that stopped over is using ice shield but no drip edge. is it ok to forgo the drip edge if he is using the ice shield?
we are using standard 30 year timberline.

wmallock

hey I am a roofer I always use drip edge in my opinion it gives the roof a cleaner look and helps prevent water and ice from getting behind the fascia and trim and you might want to check on the code in your area it may require it

maceycon

Tell him to put it on! Gutter may not be as effective with out. The water can get behind the gutters and also run back under the ice and water shield and shingles. it and it also helps keep the water off the fascia and rake boards. He is only skipping it to cut corners. Where else will he cut corners?

shanekw1

Without drip edge, what protects the exposed edge of the roof sheathing? For what it costs tell the cheapo bast*rd to put it on.

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RandyB1986

If the house is painted wood trim, I would only use a drip edge where the gutter is. I have had customers complain because drip edge dont match paint.

advanced_energy

that was my next question; should drip edge be applied only to area's where there are gutters or everywhere there is an edge such as the rakes?

Tom Struble

i like to use drip drip edge everywhere at least .032 aluminum.
Most roofers around here don't use it that often tho.The detail
they use at the eves is they overhang the i&w about 3 inches past the roof edge then fold it over the fascia then the gutter mounts on top of the i&w.I'm not a big fan of this detail the shingles curl into the gutter and leaves some of the i&w exposed to UV. Anyone else see this detail?

Ed the Roofer

Lets first discuss the different styles of Drip Edge Flashings there are.

Along the gutter eave edges, many contractors use the incorrect profile of metal in lieu of the proper gutter apron drio edge.

The gutter apron drip edge metal is pre-bent with a slight pitch to it, so that it fits nicely without trying to lift up on the roof as a 90* bent overhanging drip edge metal does.

The gutter apron is extremely important, so that ice and water do not migrate back behind the gutter and wick into the fasci boards and the open bottom edge of the roof deck sheathing.

It only costs about .50 cents per foot and comes in 10-12 foot sections, mader out of various colored aluminum, typically white, brown and sometimes black or bronze, in addition to galvanized mille finish steel.

The "Other" type of Drip Edge metal is the one that gets installed along the gable/rake edges of the home/structure. This one, although less critical, still has it's practical needs and ramifications if not installed on those occasions.

I call that one the O.D.E., which stands for Overhanging Drip Edge metal. Other areas have there own names, but this style has a tight 90* bend and a crimped 3/8" edge that extends beyond the plane of the roof deck sheathing.

The ODE can prevent capillary action of moisture and also mitigate the potential of wind driven rain blowing under the side edges of the shingles along the rake edge.

A more proper way to install the Ice and Water Shield along the gutter eave edge, would be to extend it down 2" to 3" onto the fascia board, behind the gutter and then allow the new Gutter Apron drip edge metal to completely cover that.

The gutter apron metal should also extend to the Inside of the actual gutter trough, so that any dripping water can properly flow into the gutter to get expelled properly instead of dripping or freezing behind the gutter.

One final point about the gable/rake edge ODE metal. I do install this on a standard flush to the edge fascia board scenario, but if they have stained cedar fascia, it looks much better without it installed. Also, when there is a Frieze Board 1" x 2" bump out at the top, it is a flip of the coin decision, especially if they already have the aluminum cladding installed.

Ed

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imperialroofing

hi, ive been roofing for 30 yrs and the only people who dont use drip edge are people who are cheap or dont know anybetter but... you can get awaywith it as long as you use an inch or more on the over hang (starter corse) but by doing this the shingle will bend after a period of time and break

Travis

It is not a must. I never throw it in. I offer it as an upgrade option only. Yes, I strongly recommend, but I will not absorb cost. Not code here.

With proper overhang, you will be ok. Torn off thousands of roofs without any sort of drip edge/gutter apron and have never seen but a few handful of houses that have rotten decking at the bottom- 1 inch which we cut out and installed gutter apron.

wmallock

if matching color is a problem it does come in more than one color it should be a standard not another way to get a little more money out of someone. should go everywhere rake fascia and should take use of gutter into consideration and style of.