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Old 02-21-2014, 09:48 PM   #1
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installing skylights on roof with 3 layers of shingles


I am looking in to adding 2 46" x 46" skylights onto a house.
The roof has 3 layers of shingles, the top layer is about 6 years old.
Do you think I will have a problem finding someone to do the Job?

Thanks
Chris

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Old 02-21-2014, 09:57 PM   #2
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installing skylights on roof with 3 layers of shingles


I believe you will have a problem finding somebody to do the job. 2 layers of shingles is normally the maximum that's done and in many places 2 layers of all that is allowed by code. You may even end up having a problem with the building inspectors if it's actually a code violation where you live.

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Old 02-21-2014, 10:11 PM   #3
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installing skylights on roof with 3 layers of shingles


It's going to take at least three times the labor.
And when you or the next person has to reroof it's now going to cost at least three times as much, just because someone did not strip the roof and do it right.
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Old 02-22-2014, 08:03 AM   #4
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installing skylights on roof with 3 layers of shingles


Ayuh,.... 'n you'll have a perpetual Leak forever after,....

I ain't Never seen a skylight that didn't eventually Leak,.....
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Old 02-22-2014, 09:40 AM   #5
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installing skylights on roof with 3 layers of shingles


Nothing is impossible if you are willing to pay what the roofer says they need to do it properly. Any qualified contractor is probably willing to do any job if he can name his price, materials, and techniques and you say yes. The good ones tend to turn down work where they cannot do it to their own standard of workmanship because the customer doesn't want to pay for it. You know, like the roofers who probably wanted to tear off your old shingles who did not win your business.

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Old 02-22-2014, 10:49 AM   #6
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installing skylights on roof with 3 layers of shingles


Skylights are sooooo 1980's. I can't understand why anyone puts them in anymore.
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Old 02-22-2014, 11:47 AM   #7
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installing skylights on roof with 3 layers of shingles


Holy crap guys, it's not rocket surgery. What's with all this?

Quote:
Originally Posted by Msradell View Post
You may even end up having a problem with the building inspectors if it's actually a code violation where you live.
Why would an inspector have anything to do with this and they could care less how many layers until he goes to put on a new roof.


Quote:
Originally Posted by Bondo View Post
Ayuh,.... 'n you'll have a perpetual Leak forever after,....

I ain't Never seen a skylight that didn't eventually Leak,.....
I've not seen too many of anything that didn't leak...eventually

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Originally Posted by IslandGuy View Post
Skylights are sooooo 1980's. I can't understand why anyone puts them in anymore.


It's not a question of finding someone, it's a question of finding someone to do it right. As stated above it's going to require some additional work and attention to make sure it's done right and it will cost more than, say, adding the skylights into a new roof.
Don't count on it blending into this roof perfectly and plan on having to re-set them once a new roof is installed.

Yes, it isn't that difficult. Just make sure the installer mounts it solid to the deck and not over the old shingles and make sure it is flashed properly into the existing roof or you will have two large headaches on your roof.
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Old 02-22-2014, 02:56 PM   #8
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installing skylights on roof with 3 layers of shingles


Quote:
Why would an inspector have anything to do with this and they could care less how many layers until he goes to put on a new roof.
How about most areas require a building permit to install a skylight ?
Many require it for a solar tube. Some require it to replace a skylight or solar tube.
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Old 02-22-2014, 04:09 PM   #9
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How about most areas require a building permit to install a skylight ?
Many require it for a solar tube. Some require it to replace a skylight or solar tube.
None of this has anything to do with how many existing layers are on the roof. Only time that will matter is when it comes time to replace the roof.
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Old 02-22-2014, 04:26 PM   #10
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installing skylights on roof with 3 layers of shingles


Quote:
Originally Posted by Bondo View Post
Ayuh,.... 'n you'll have a perpetual Leak forever after,....

I ain't Never seen a skylight that didn't eventually Leak,.....
Only if it's done wrong. Mine don't leak...

Quote:
Originally Posted by IslandGuy View Post
Skylights are sooooo 1980's. I can't understand why anyone puts them in anymore.
Because it gives me free sunlight...and I can open it to let warm air out....I don't do stuff to my because it's in style...I do it because I want it....


To the op....how do you know you have 3 layers? Are you counting at the edge? If so....I'm thinking you have 2 layers.....quite often people take the starter strip as being one layer....from the edge, a fresh roof will look like it has two layers...starter strip and the first layer....
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Old 02-22-2014, 06:51 PM   #11
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installing skylights on roof with 3 layers of shingles


The inspector may not like 3 layers and he may say something about it, but I doubt very much you will have any problem getting it signed off. They are there to look at the rafter cuts and framing of the new skylight not layers.

The bigger question will be that 6 yr old layer, was it permitted? If so you very well may be dealing with the inspector that ok'd it lol. If they didn't care then I doubt they will now. If it was unpermitted, then you very well could be opening a huge can of worms.

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Old 02-22-2014, 08:51 PM   #12
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installing skylights on roof with 3 layers of shingles


Thanks for the info. I bought the house about 4 years ago so not sure about the roof. I will make some phone calls to find out.

Also not sure about the number of layers. I might have counted wrong. If I do get it done I realize that it might not look right due to the color of shingles if they have to replace some of the old ones. But this is OK, The skylights would be on the back side of the house. I will make sure the install is a deck install not on top of the old shingles.
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Old 02-22-2014, 10:13 PM   #13
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installing skylights on roof with 3 layers of shingles


Is your roof stick framed, or do you have trusses? This is going to take some structural work considering the size of these lights. Where did you get them? they sound like a size that would be used on a commercial low sloped roof.
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Old 02-23-2014, 12:17 PM   #14
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installing skylights on roof with 3 layers of shingles


Stick roof. See photos at

1925 brick Bungalow attic project
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Old 02-24-2014, 03:59 PM   #15
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installing skylights on roof with 3 layers of shingles


Interesting comment that was made saying Skylights are so 80's. If you buy a skylight made IN the 1980's then it would be so 80's. But the skylights of today look good and are built to this generation.

I like how OldNBroken put it. If you have the right person doing it, and they put the skylight to the decking, then flash it correctly, then you won't have any problems. Also, what the individual said about "are you counting the layers at the roofs edge?" He had a good point. If you counted it that way, you are going to have 3 layers instead of 2 because the first row of shingles at the roof edge is doubled. So it may only be 2 layers of roofing.

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