No valley metal

Grumpy

26g is 26 gauge, as opposed to 24g which is 24 gauge. Which one is thicker? When talking about gauges, 24 is bigger than 26.

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-Grumpy
Chicago Gutters Chicago Roofing

AcclaimExteriors.com

Brain that would be 26 gauge metal. The coatings that are used have rust inhibitors and as stated will far outlast the shingles on the roof. I have got to ask you how long have you been doing roofing?

My business partner and I are both from construction building design and engineering backgrounds as well have done roofing off and on over many years before we began our construction company. We provide a far superior service and finished product to our customers than is available than from most roofing companies around. Sure there are some good ones but their standards are sub par and not up to what we provide in every case no matter if the house is a 30k home or a Million dollar home. They ALL get the same quality product from us and the same attention and personal service. Nobody deserves less than that for spending money on one of if not the most important parts of their home.

TheBrain

this is my fifth year roofing. up until this year i have always shingled a cut valley. now the company i work for wants me to shingle california style valleys. i don't know if it's because of the climate where i live but i hardly see any open valleys. i've worked in vancouver and pretty much all the roofs there are all ceder conversions with open valleys. but it rains so much there that it is the logical valley to choose.

and as far as quality goes. i totally agree with you. it's the fly by nighters that are killing the industry. guys that will take a 3k pay cut on the job to land it.

TheBrain

oh and thanks for the info, both of you.

AcclaimExteriors.com

Yeah and the homeowners don't realize that taking their roof replacement for so much less money they are getting something short of what they need. Also in most cases those roofers don't carry insurance or workmans comp nor or they registered contractors. Send me your email and I'll send you a report that we did for a bank on a roof done by one of those types. You will be amazed at what you will see and read.

Top Cat Roofing

My advise would be to put something in the valley.
If for no other reason than the homeowner is counting on you, and that you want to be able to sleep at night.
Don't know what's common up by you , but 20" materiel, usually metal, is code here, (but 16" is commonly used).
Hopefully your quote can handle a bit for the flashing. If you can't at least weave the valley.
I fix new construction roofing all the time.
Don't let a builder make you compromise yourself, it feels like crap.

AcclaimExteriors.com

Top cat the idea is to quote accordinly to do right by your customer. I am in a situation right now with a customer that has a 25sq roof that is two story farm house steep pitch 10/12p and rubber on top. This roof has 4 layers of shingles as well as a layer of shake. Their quotes are from 7500-9000. Now I have done a roof just like this and the last one I did was only 18sq and took 2 30yd dumpsters full on a long haul and they cost me 1500 alone. I only use GAF Timberline Prestique 110mph shingles and all GAF materials. My bid on this job is close to 15k. I however also offer a full roof replacement warranty thru GAF for 20 years to all of my customers. I say these other companies don't know what they are getting into on this one. They don't realize that there is a complete sheething job on 25sq involved as well as the 4 layers of shingles and the shake. How do you think you need to overcome this one?

Same way you need to educate your customer. If you do it correctly and do what is right as well as use quality materials and charge accordingly you will do better than if you try and cut corners to just get the job.

Gatesroofing

It depends on your location and what type of material your putting on. If your putting a 50 year laminate or presidential style shingle then yes i would use metal over a closed valley. Now if your in snow area then YES you will need ice and water shield in the valley. if your not then a roll of 30# down the valley with each roll from either side going across and up the opposing side in a weaving pattern will be more then enough.

No for valley styels you can do either a weaved valley, a inverted starter row valley or a california valley (least what we call it out here).

Weaving is just weaving each row from each side as you go up. it makes a nice flat valley but will not give a good valley definition. Also when weaving, you must keep it straight or you will see the cross points venture out of the valley. doesnt look good then!

An inverted starter row is where you run the less step or less tall side of the two that meet at the valley first. then run a row of shingles up the valley on the unroofed part then roof across to that and stair step it up. i can give more details if you want. little to much to type.....

california valley is where you start just like the inverted but instead of running a row up the valley, you just run the other side of the valley to the valley then cut the shingles at the angle of the valley.

they will all last the life of the roof if done right and all i do now is inverted starter row valleys. i never do weaves because they just done define the valley transition. if you need more info let me know and i can explain them clearly.

just remember tho, if you are using a real thick shingle like TL or presidential you must use metal as they dont flex like 30 or 40 year material.

Marc

Ridgewalker

I let the Home owner decide how he wants the valley to be done. If he wants metal. I use a 18" or 24" aluminum baked enamald coated valley over at least a 30lb felt. If no metal is wanted a California style Valley is used. On anything Like a Presidential or TL, no option, metal valleys are always used (they dont bend nice). A good roofer would have no problem doing either Metal or Non.

dougger222

Here's what the Minneosota state residential code states,

1. For open valley (valley lining exposed) lined with metal, the valley lining shall be at least 24 inches (610mm) wide and of any of the corrosion-resistat materials in Table R905.2.8.2

2. For open valleys, valley lining of two plies of mineral surfaced roll roofing, complying with ASTMD 3909 or ASTMD 6380 Class M, shall be permitted. The bottom layer shall be 18 inches (457mm) and the top layer a minumum of 36 inches (914mm) wide.

3. For closed valleys (valleys covered with shingles), valley lining of one ply of smooth roll roofing complying with ASTMD 6380 Class S TypeIII, Class M TypeII, or ASTMD 3909 and at least 36 inches wide (914mm) or valley lining as described in in Items 1 and 2 above shall be permitted. Specialy underlayment complying with ASTMD 1970 may be used in lieu of the lining material.

Table R905.2.8.2
Aluminum=.024
Galvanized steel=.0179 Gage 26 (zinc coated G90)
Cold-rolled copper
Lead-coated copper
High-yield copper
Load-coated high-yield copper
Stainless stell
Zinc alloy
Lead
Painted terne