Laying New Drip Edge over Old???
BilljustBill
| Posted in Construction Techniques on
One of the neighbor’s homes got new shingles yesterday. As I watched the new Timberline 30yr High Def. shingles being put on over new 30lb felt, I saw that the roofing crew had overlaid new metal drip edge over the old. The old drip edge was never disturbed. Generally homes in our part of the country have their roof damaged enough to be replaced every 10-15 years.
What metal to metal reaction would likely occur over a span like that. What are the Pro’s and Con’s of doing it that way?
Mine roof is up for new shingles in the next six weeks. I’d appreciated your insight and experience. Thanks,
Bill
Replies
Since no one has replied, I'll get the ball rolling: If both metals are the same (probably aluminum), there should be no galvanic reaction between them, and then only if they are wet (which is a possibility with drip edge). I can't see why they didn't remove the old and replace it. Seems like the new would be hard to get in place with the old still there. I sure wouldn't want it that way on my roof and if I were you, I would make sure to ask the contractor about it to make sure he wasn't planning on doing it on my roof.
Thanks Danno,
The drip edge used here in Texas is thin guage galvanized steel.
I had to wait to laugh when one roofer came over for a bid and said he planned to "reuse" the current drip edge... no need for new. Mine is 14 years old....
Thanks for your insight,
Bill
I was going to say, if the old stuff is still good, you could keep it in place and shingle over it, but I'd say after 14 years, it could probably stand to be replaced. the stuff isn't that expensive, is it?
Didn't used to be too expensive. now it can run 6-10 bucks a length.I wouldn't be concerned about it one way or the other as long as it looks good
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
Still seems to me relatively cheap way to ensure that the water coming off the roof gets kicked away from the fascia! Fascia isn't cheap either! (Not trying to argue!)
[Sort of an aside to you, had a fun couple days painting--get primer and one top coat on everything in a big, tall back entry stair well and have about finished second cutting in on woodwork and "boss" mentions he meant to caulk the cracks in the wood and between door casing and walls, etc., but hadn't, so I can do it. Swell. So I caulk everything with sanded caulk for tile work (what he had and wanted me to use) and then get to start painting over it--and all painting was supposed to be done by end of day! Actually finished by 3, but painted over pretty "damp" caulk! Of course the caulk is where wall (painted with eggshell) meets woodwork (painted with pearl), so basically have to cut in walls and woodwork all over again.
(I had noticed the cracks and gaps, but the whole back entry is pretty rough, so I figured he planned on the customer living with it--oh, and he saw that the door was sticking, so took a belt sander to my freshly painted door jamb, spraying sawdust all over my freshly painted walls and woodwork.]
Marc again?TFB (Bill)
Yeah, how'd ya guess?
Other day I unloaded five pieces of Wonderboard from the back of the truck, carried them up the stairs and into a back room in the house, across the kitchen from the bath. I carried all the tile and mastic into a bedroom that had a doorway into the bathroom where he was tiling. First, he frames in the doorway and drywalls it--then needs room to finish the drywall where he covered the door opening in the bedroom, so tells me to clean up the mess and move everything out of the bedroom. Tells me the best place would be to put it in the other room, but then realizes the Wonderboard and most of the tools are there, so he tells me to put the Wonderboard back out on the truck and move the tools to the garage and basement, then move the tile into the back room so he can get it into the bath. I don't mind hard work, but I really hate moving things around twice when a little forethought would have prevented it.
"Yeah, how'd ya guess?"Are you kidding me? Everytime somebody messes up something you've done, causes you more needless work, generally screws up your day, it is always Marc. Always, always always.Moving wonder board sucks just moving it once. now you have to handle it three times. See, has Marc written all over it.TFB (Bill)
Bill
All we use is painted steel roof edge.
I always replace metal so i can get the winterguard to metal connection right.
I have covered metal with metal when the gutter nails are thru old metal edge and it would be too much of a PITA to remove.
Rich
I was thinking about this and I think you just nailed the only reason not to take off the old and put on new!
There is actually a metal edge made specificly for going over the old. One reason for keeping the old can be that it was a wider version and is all nicely painted in with the fascia. Removing it means leaving an unpainted strip or having a custom edge material made up.The stuff made to go over is a type of J metal that hooks onto the extend flange of the old.
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
I know that. I used it a lot when people wanted to lay over a roof.
Bill,
How unsightly does that double drip edge install appear from your vantage point??
Sounds like another way to cut a few minutes off the roof install for no apparent gain.
Got a picture for us. If you're happy with that look at your neighbors than have it done that way at your house -- or not !
Walter