Please post questions about anything having to do with roofing

[Larry D. Kage]

Does anyone have any experience with roof ice melt systems?

I am looking at 2 diferent ones: http://www.bylinusa.com/ and http://heatedroofsystems.com/

Any info is appreciated.

[Carl A. Brown]

Larry,

Info posted here might be helpful.

[Frank Albert]

An interesting aside to the starter strip question/equation.
I use Elks. They said no warranty if I didn't use their starter course. I put 2 pieces down and did a double take. They were about 6 1/2" wide (tall) That created a 1" headlap! I tossed them and cut tabs off of 3-tabs. Still do. I assume felt or I&W would take care of the leakage.

[Kenton H. Shepard, CMI]

Originally Posted by swoods

What causes these diagonal patterns with asphalt shingles?

Steven, it looks like the offset is only about 4". Offset for 3-tab shingles is typically close to 6" which would make the patern less obvious.

[Larry D. Kage]

Originally Posted by cbrown1

Larry,

Info posted here might be helpful.

Thanks Carl that was helpful.

[Kenton H. Shepard, CMI]

Originally Posted by cbrown1

Larry,

Info posted here might be helpful.

I agree, good link, thanks Carl!

[Steven Woods]

Originally Posted by kshepard

Steven, it looks like the offset is only about 4". Offset for 3-tab shingles is typically close to 6" which would make the patern less obvious.

Thanks Kenton!

[Kenton H. Shepard, CMI]

Originally Posted by srowe

Thanks for your help Kenton! Are there any manufacturers that would prohibit or void a the warranty for this installation. The shingles were obviously not cut properly and is very unsightly but does it affect performance?

Shingle installations actually have two separate warrantees. One is the manufacturer's warranty against problems resulting from manufacturing defects.
The second is the contractor's warranty which covers proper installation methods and workmanship.

The manufacturer's warranty is not negotiable and can't be changed by a contractor or salesman. It will not cover any problems caused by improper installation. The terms contractor's warranty may vary.

[Kenton H. Shepard, CMI]

Originally Posted by dgoudreau

what is the # 1 cause for shingle failure

According to CertainTeed's tech manual, it's improper fastening.

[Kenton H. Shepard, CMI]

Originally Posted by iniquette

What is sheathing?



Kidding, this is a good thread you started though Kenton. keep up the good work.

It's when you cut all the hair off one of those poor sheep.

[Kenton H. Shepard, CMI]

Originally Posted by Frank Albert

Been there, done that. Lets water wick underneath.

Seems like it would be less likely to wick on steeper roofs, and that a longer shingle overhang might encourage runoff to overshoot the gutter on steeper roofs.
Actually it seems like more of a common sense situation than a "one overhang length fits all" situation.

[Kenton H. Shepard, CMI]

Originally Posted by dconrad

Kenton,

Does extractive bleeding, or bleed-through, on asphalt shingles reduce the life of the roof? How about staining from black algae?

Thanks,

Dean Conrad

According to the techies, neither extractive bleed-through or algae staining will damage the shingle.
They say that extractive bleeding will often fade after several months and manufacturers may ask for a 3-month period to see if it fades before replacing shingles.

[Kenton H. Shepard, CMI]

Originally Posted by dconrad

Kenton,

Does extractive bleeding, or bleed-through, on asphalt shingles reduce the life of the roof? How about staining from black algae?

Thanks,

Dean Conrad

According to the techies, neither extractive bleed-through or algae staining will damage the shingle.
They say that extractive bleeding will often fade after several months and manufacturers may ask for a 3-month period to see if it fades before replacing shingles or they may clean the shingles rather than replacing them.

[Carl A. Brown]

Quote:
Originally Posted by cbrown1
Larry,

Info posted here might be helpful.

I agree, good link, thanks Carl!


Keep refreshing that those guys have a lot of good info and they might talk on a thread for months.

And they are not mfgrs. reps they are guys in the work place seeing the truth just like the people here sometimes you have to pick out the opinions you agree with and pursue the person further. I have had good conversations with a few that I highly respect their thoughts/opinions.

There are some that I do not have the same respect for.

[Tim Spargo]

Originally Posted by kshepard

I've asked a GAF/ELK tech guy and a lead field adjuster for a big insurance company. If one of them doesn't know... I don't know who would.

Some kinds of things manufacturers don't like to discuss much. I've been unable to get time lapse photos showing how shingles change as they age.

"Racking" your shingles @ installation gets my vote!

Super common failure.. if you see a 3-5 year old roof and the patterned curling of shingles... they were "Racking" their shingles, meaning bending them to allow for an installation in a straight up and down manner, rather than in a standard typewriter / stair type install.

Tim