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IKO Shingle Stair Step Pattern

 
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Old 01-31-2019, 09:39 AM   #1
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IKO Shingle Stair Step Pattern


Hello group.

I'm having trouble running down a technical reason for an aesthetic issue with Cambridge shingles whereas when doing offset/diagonal installation, you end up with diagonal patterns or stair-stepping of colors, often going in the opposite direction of the way the shingles were laid.

I see this on multiple jobs/homes now that I'm aware of it. On some jobs it looks terrible. Seems to always happen with architectural singles with alternating shades/colors.

On this job, shingles were laid in proper offset by crew, and installed diagonally up and to the left. Shingles were pulled from a single bundle at a time. Multiple diagonal patterns can now be seen going up and to the right. IKO rep had no explanation. No one seems to know. But this effect is unpleasing to the customer.

Note the photo attached. I'm talking about the alternating light/dark colored patches that go up and to the right. The patterning stops about 2/3 of the way through the job, this after I made a point of it.

Anyone know how to avoid this?
Is it solved by laying shingle side by side? Or is it necessary to mix bundles? Thanks for any technical insight
Attached Thumbnails
IKO Shingle Stair Step Pattern-20181110_135710-crop-1.jpg   IKO Shingle Stair Step Pattern-20181110_135710-crop2.jpg  

Last edited by Flashpoint; 01-31-2019 at 09:47 AM.
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Old 01-31-2019, 09:34 PM   #2
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Re: IKO Shingle Stair Step Pattern


Don’t lay IKO shingles. Problem solved. They are junk, and their warranty is junk. IMO

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Old 01-31-2019, 09:46 PM   #3
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Re: IKO Shingle Stair Step Pattern


Quote:
Originally Posted by donerightwyo View Post
Donít lay IKO shingles. Problem solved. They are junk, and their warranty is junk. IMO
I think A&E would say the same thing!

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Old 01-31-2019, 10:30 PM   #4
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Re: IKO Shingle Stair Step Pattern


IKO is IKO, always been a 'lesser' brand, imo. Required some extra effort for early architectural style shingles, especially, to get an even look.

OP's Issue, Where the directions followed here steps 11 and 12 specifically. Not designed to be stair stepped the entire roof. 4 row step starting with full, then that repeated above it. Even following the directions that often happens. Been that way since the early to mid 80's.
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Last edited by Texas Wax; 01-31-2019 at 10:33 PM.
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Old 02-01-2019, 09:48 AM   #5
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Re: IKO Shingle Stair Step Pattern


Tank you for the replies!

I should have mentioned that half the roof on this one job is already done in IKO.

So I'm hearing a couple of answers: One is that with IKO, it's very difficult to lay a 'pattern free' roof, correct?

I've read IKO's guidance before, including steps 11 and 12, and as far as I know, that offset method was followed (I asked and witnessed) but it appears that even with that routine (4 or 5 courses offset properly) the 'patterning' can still occur.

If IKO is used, and you want a truly random looking application, can this be achieved by mixing bundles? I've read about as many as four bundles being mixed at a time.

Without mixing bundles, can this effect be avoided by looking at and picking different shingles?

Or is it that IKO has shingles with repeating patterns and it is a lost cause with that line.

Any shingle lines better to avoid this? What about Certainteed Moire Black?

Thanks!
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Old 02-01-2019, 08:01 PM   #6
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Re: IKO Shingle Stair Step Pattern


Quote:
Originally Posted by Flashpoint View Post
Tank you for the replies!



I should have mentioned that half the roof on this one job is already done in IKO.



So I'm hearing a couple of answers: One is that with IKO, it's very difficult to lay a 'pattern free' roof, correct?



I've read IKO's guidance before, including steps 11 and 12, and as far as I know, that offset method was followed (I asked and witnessed) but it appears that even with that routine (4 or 5 courses offset properly) the 'patterning' can still occur.



If IKO is used, and you want a truly random looking application, can this be achieved by mixing bundles? I've read about as many as four bundles being mixed at a time.



Without mixing bundles, can this effect be avoided by looking at and picking different shingles?



Or is it that IKO has shingles with repeating patterns and it is a lost cause with that line.



Any shingle lines better to avoid this? What about Certainteed Moire Black?



Thanks!


CT Moire Black is pretty uniform


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Old 02-01-2019, 08:02 PM   #7
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Re: IKO Shingle Stair Step Pattern





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Old 02-02-2019, 11:07 AM   #8
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Re: IKO Shingle Stair Step Pattern


Don't buy IKO's. Problem solved
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Old 02-02-2019, 11:09 AM   #9
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Re: IKO Shingle Stair Step Pattern


Quote:
Originally Posted by Flashpoint View Post
Tank you for the replies!

I should have mentioned that half the roof on this one job is already done in IKO.

So I'm hearing a couple of answers: One is that with IKO, it's very difficult to lay a 'pattern free' roof, correct?

I've read IKO's guidance before, including steps 11 and 12, and as far as I know, that offset method was followed (I asked and witnessed) but it appears that even with that routine (4 or 5 courses offset properly) the 'patterning' can still occur.

If IKO is used, and you want a truly random looking application, can this be achieved by mixing bundles? I've read about as many as four bundles being mixed at a time.

Without mixing bundles, can this effect be avoided by looking at and picking different shingles?

Or is it that IKO has shingles with repeating patterns and it is a lost cause with that line.

Any shingle lines better to avoid this? What about Certainteed Moire Black?

Thanks!
Malarkey, Certainteed, OC Durations
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Old 02-02-2019, 12:39 PM   #10
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Re: IKO Shingle Stair Step Pattern


Quote:
Originally Posted by A&E Exteriors View Post
Malarkey, Certainteed, OC Durations
Where you been? Was starting to wonder if the lady had offed you so she could get back on here lol.

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Old 02-02-2019, 04:47 PM   #11
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Re: IKO Shingle Stair Step Pattern


Quote:
Originally Posted by mrcat View Post
Where you been? Was starting to wonder if the lady had offed you so she could get back on here lol.

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OMG I can't stop laughing!!!!

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Old 02-02-2019, 04:52 PM   #12
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Re: IKO Shingle Stair Step Pattern


Quote:
Originally Posted by mrcat View Post
Where you been? Was starting to wonder if the lady had offed you so she could get back on here lol.

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Someone else said almost the same thing yesterday. I am starting to wonder what all he has told y'all about me!!! Lol

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Old 02-02-2019, 10:05 PM   #13
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Re: IKO Shingle Stair Step Pattern


Quote:
Originally Posted by Lady Dreamer View Post
Someone else said almost the same thing yesterday. I am starting to wonder what all he has told y'all about me!!! Lol

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Old 02-04-2019, 11:13 AM   #14
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Re: IKO Shingle Stair Step Pattern


Mordekyle Thanks for the pics. A neighbor has the CT Moire Black with no visible patterns. Contractor for that job swears they mix bundles on all jobs, so perhaps it is needed for CT also, not just IKO Camb.
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Old 02-04-2019, 11:27 AM   #15
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Re: IKO Shingle Stair Step Pattern


Fwiw, I never mix bundles intentionally and donít see any patterns. The Moire Black seems especially uniform.


Iíve even used a leftover bundle of granite or Georgetown gray on a different roof and have not seen a discernible difference.

Happy with CT shingles. A couple bucks more/sq. than Malarkey but I have no reason to switch.


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Old 03-30-2019, 03:38 PM   #16
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Re: IKO Shingle Stair Step Pattern


Iko is well known for this. Use a different manufacturer. We like Certainteed very reliable and stand behind their product. Iko and bp are about the worst you can use.

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