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carb454
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roof shingles (installation)
04/06/04 09:56 AM
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Hello to all, I am a product off of the TBN and felt the country pangs banging at me for sometime now so I joined this one also!! OK now to my question, On regular 25-30yr. 3-tab shingles there is a cellophane strip on the back of every shingle which I assume is there so while the shingles are in the bundle they don't melt together .SO I think when they are installed you peel this strip off so the shingle can seal against the last row ...Correct or is that optional, Reason I ask is when we contracted our roofing job on our new constuction 7yrs ago I didn't climb up to inspect the job (my mistake thinking a contractor would know his business) but now it's been 7yrs and we live in a very windy region of md. I'm loosing shingles and I DON'T LIKE IT!!! SO I just want to know about the cellophane strip because I'm thinking that the shingles are getting fatigued flapping up and down finally tearing off!! bigtime thanks for your input Mark
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Bird
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Re: roof shingles (installation)
[re: carb454]
04/06/04 10:39 AM
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Good question, Mark. I'd like to know more about that myself. I don't think most roofers ever remove that cellophane strip, although when neighbors and I did our own roofing, we did.
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egon
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Re: roof shingles (installation)
[re: Bird]
04/06/04 11:10 AM
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I do beleive that strip should be removed.
Egon
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RobS
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Re: roof shingles (installation)
[re: carb454]
04/06/04 11:18 AM
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I'm not absolutely sure on this but I believe you'll find the celophane strip lines up on the tar strip when the shingles are stacked in the bundle but when you lay them it will fall away from the tar strip. The strip normally sticks to the back of the shingle. If it sticks to the tar strip you would want to remove it. Take a look and let us know
Rob
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RonL
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Re: roof shingles (installation)
[re: carb454]
04/06/04 11:23 AM
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Carb 454
The cellophane does not have to be removed. While the shingles are in the bundle the cellophane lays on top of the thermo setting seals of the shingle below. ( You can see the spots on the shingle) When the shingles are layed on the roof the bottom of the tab lays on the thermo setting spots and theoretically seal down when the sun hits the roof. Several years back asbestos was removed from roof shingles. When fiberglass and other materials were substituted for the asbestos layer they initially had problems. You may have some of these shingles. Contact the manufacturer ( if they are still in business).
RonL
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gsganzer
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Re: roof shingles (installation)
[re: carb454]
04/06/04 11:27 AM
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I believe the cellophane strip is the nailing strip. I think the strip is located where you nail and prevents the nails from pulling through. If I remember right, the glue tabs are at the trailing edge of the shingle and don't line up with the cellophane. My brothers a roofer, so I'll ask him tonight if somebody doesn't chime in with something definitive.
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carb454
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Re: roof shingles (installation)
[re: gsganzer]
04/06/04 01:36 PM
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Thanks to all for the response and info ,I didn't check to see if they lined up with the self sealing spots when laid on roof .. I just know that when I was up on the roof last summer installing a different type ridge vent(the original was the aluminium cheaper model)with cap-over shingles when I was peeling that cellophane off it was tacky underneath so I thought maybe that should seal in conjuction with the sealer spots when laid too reinforce the seal...
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dummy
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Re: roof shingles (installation)
[re: carb454]
04/07/04 07:17 AM
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On the ones I've done, we never pulled it off. So, I checked here certainteed and didn't see it in the installation instructions.
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Bird
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Re: roof shingles (installation)
[re: dummy]
04/07/04 09:01 AM
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Yeah, I'm gettin' old and forgetful. Like I said, we removed the cellphane strips, but I remember now why some "professional" roofers said they don't, and it's as has been said in the above threads. I guess it really shouldn't make a difference.
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carb454
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Re: roof shingles (installation)
[re: RobS]
04/07/04 12:53 PM
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All righty then , since I had the opportunity to climb up on the second story of my 7/12 pitched roof with 9or 10 /12 pitch front gable of course that was the location of the missing shingle,I took the time to check out my own question and come up with the answer(while my toes where digging into the soles of my shoes,and going numb)the strip has absolutely nothing to do with sealing, It appears as the strip might be a partial reinforcement to nailing line,and to keep shingles from sticking together in bundles,But I want to thank you all for your input ...Mark
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Weave
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Re: roof shingles (installation)
[re: carb454]
10/25/04 09:22 AM
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Interesting comments. I recently learned that most roofers now days do not remove the cellophane. However, when my house was re-roofed, the cellophane was removed on most of the shingles. It was all over my yard. Over the years I have lost a few shingles and all those coming off DID NOT have the cellophane removed. Since there is adhesive under the cellophane, I believe it does give you a better installation. I think the professionals say removing it isn't necessary since it is very time consuming. I would like to hear the unbiased opinion of some older retired roofers on this subject.
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beenthere
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Re: roof shingles (installation)
[re: Weave]
10/25/04 11:13 AM
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Welcome to the forum. I'm older, retired, and not a 'professional' roofer. However;
I just finished re-roofing last week, and did not remove the cellophane from each shingle, as the cellophane has white lettering printed on it that says in English, plus two other languages, "Do Not Remove". It appears to be there to contact the adhesive strip of the adjoining shingle when packaged in the bundle (I just went out and looked at the leftovers of the last bundle).
Now in the past, there may have been a manufacturer of shingles that did put a cellophane strip over the adhesive strip that did need to be removed before installation. Therefore, all can be right in their opinion to remove, or not remove. I suspect this is the case.
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GaryM
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Re: roof shingles (installation)
[re: beenthere]
10/26/04 08:10 AM
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Also not a professional roofer, but the strip keeps the shingles from sticking in the bundles as you said. When they are installed, the adhesive does not line up with the strip. So why would you want to take it off?
Gary
----------------------------------------------
Hey! Aren't you supposed to be working?
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Chillimau
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Re: roof shingles (installation)
[re: Weave]
11/01/04 12:13 PM
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Like the rest I'm not a pro roofer. If I am remembering correctly the shingles are bundled in opposing directions. Tamko heritage 25 were the last shingles I used. Once you lay the shingles in the same orientation the cellophane is not in the bonding strip. No need to remove.
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mathey
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Re: roof shingles (installation)
[re: Chillimau]
12/17/04 12:23 PM
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Is there an easy way to trim the shingles in a straight line where they overhang the eaves? Seems to me I recall that a plywood blade installed backwards in a circular saw works, but i'm not positive. Any help?
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GaryM
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Re: roof shingles (installation)
[re: mathey]
12/17/04 12:59 PM
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A utility knife with a hook blade works well. They make a shingle cutter that looks like a really heavy duty paper cutter.
I've seen it in the Amazon tool catalog. Link
Of course for $500 you can buy a lot of utility knife blades.
Gary
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Hey! Aren't you supposed to be working?
Edited by MikePA (02/04/05 05:22 PM)
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mathey
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Re: roof shingles (installation)
[re: GaryM]
12/17/04 03:05 PM
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Does that work from the top as well? i can't imagine trying to cut thru (at some places) 2 layers of shingles with a utility knife from the top side and getting it to look halfway decent...but, If you think it'll work, i'll try it!
thanks for the reply!
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GaryM
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Re: roof shingles (installation)
[re: mathey]
12/17/04 04:41 PM
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That's the way we cut the overhang on a three car garage a friend and I built.
You may find it easier to cut the top layer first, then the second layer.
I've seen the roofers in my area do it the same way.
Gary
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owdouglas
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Re: roof shingles (installation)
[re: mathey]
01/17/05 07:59 PM
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yep the plastic stays on, and the hook knife works much better in warmer weather, I found a regular blade is better when singles are stiff
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mathey
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Re: roof shingles (installation)
[re: owdouglas]
10/05/05 08:01 PM
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***UPDATE on eave trimming with saw***
The plywood blade in the circular saw does not work...well, it works, but not well...it tears the heck out of the blade and is very slow going.
What DID work however is a carbide masonry blade...I bought one of these last year to do a brick patio...man, you almost can't kill this blade, well worth the $20 it cost. Anywho, it cuts thru the shingles like "buddah"...nice clean straight line and super quick.
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