Copper on roof to prevent algae

[cwhite2]

Does anyone know of a website explaining the correct way copper should be added to existing shingles on a roof?

TIA,

[Jeffrey R. Jonas]

I don't know about copper...always used zinc...

See here... http://www.zincshield.com/home.html

[Russel Ray]

Copper works better than zinc, but zinc is less expensive.

[David P. Valley]

Carolyn,

They always get installed under the ridge shingles as it is the highest portion of the roof.

I recommend these Zinc strips to my clients.

Yes, Copper will work also.

[gbeaumont]

Hi to all,

just to add to the confusion The last ones I installed a few years ago were a copper/zinc alloy, I believe zinc is too soft to be used by itself.

I hope this helps (but suspect it doesn't)

Regards

Gerry

[cwhite2]

OK - I realize I should've given a little more info on why I ask this question. I went with a friend to look at a house she was thinking of buying. I wasn't doing an inspection, she just wanted me to ride along to see 3 homes she is considering. I didn't have a camera with me & one of the homes had an approximately 6" wide strip of copper nailed about 1 1/2' down from the ridge of the roof. It was kind of woven between the lower edges of the row of shingles above the copper & the nails were driven through & exposed to the exterior.

Well, my friends fiance supposedly worked with a roofer at one point & time & he told her this is how they do it on an existing shingle roof & there is nothing wrong with it. I don't intend to get in the middle, but I told her I would expect the exposed nailheads to leak somewhere down the line, if they are not already.

I wanted to find a website which showed (very simply) how to properly install it to show my friend.

[Russel Ray]

Originally Posted by cwhite2

I went with a friend to look at a house she was thinking of buying. I wasn't doing an inspection, she just wanted me to ride along to see 3 homes she is considering.

That sounds like my WALK inspection that I do for property investors. Since there obviously is a demand in your area, consider offering choices if you don't already.

[David P. Valley]

Originally Posted by cwhite2

OK - I realize I should've given a little more info on why I ask this question. I went with a friend to look at a house she was thinking of buying. I wasn't doing an inspection, she just wanted me to ride along to see 3 homes she is considering. I didn't have a camera with me & one of the homes had an approximately 6" wide strip of copper nailed about 1 1/2' down from the ridge of the roof. It was kind of woven between the lower edges of the row of shingles above the copper & the nails were driven through & exposed to the exterior.

Well, my friends fiance supposedly worked with a roofer at one point & time & he told her this is how they do it on an existing shingle roof & there is nothing wrong with it. I don't intend to get in the middle, but I told her I would expect the exposed nailheads to leak somewhere down the line, if they are not already.

I wanted to find a website which showed (very simply) how to properly install it to show my friend.

Carolyn,

Exposed nails do not have to be removed. Simply recommend a dab of roofing tar onto all roofing nail heads.

[Peter Doane]

I love this site Carol, always has good info:
http://www.askthebuilder.com/B374_In...Shingles.shtml

Here is a list of the roofing issues he's discussed.

http://www.askthebuilder.com/Roofing.shtml

[cwhite2]

Thank you Peter - That's what I was looking for. Much appreciated.

Thank you to everyone else too.