Join the MRA | Member Login
Find a Professional
  • Why Metal Roofing?
    • About MRA
    • Benefits of Metal Roofing
    • Compare Roofing Materials
    • Homeowner Testimonials
    • Inspiring Metal Roofing Projects
  • Homeowner Resources
    • Metal Roofing Buyers Guide
    • Resilient Housing Guide
    • Metal Roof Sustainability Guide
    • Above All Else You Need a New Roof eBook
    • MRA News
    • Member Provided Resources
    • 3rd Party Articles
    • Frequently Asked Questions
    • Preparing for Hurricane Season
  • Gallery
  • Visualizer
  • Ask The Experts
    • Energy Efficiency
    • Existing Metal Roof Questions
    • Installation
    • Is A Metal Roof Right For My House
    • Metal Roofing Benefits
    • Product Selection
    • Other
    • Archive
  • Find a Professional
Join the MRA Member Login
Sign Up Log In Add New Topic

TOPIC: Is A Metal Roof Right For My House

Low slope 2:12 in NYC

Return to Is A Metal Roof Right For My House

Return to Forum

We are in NYC where we do get snow
I was looking at ClickLock by classic metal
the roof dimensions are about 60 inches deep and
20 feet long.

Is the 2:12 min still OK in that scenario?
Can this be installed by a general contractor?

loretta lodico

3/15/2020
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24848/find/

ClickLock is a 1.75" tall seam snap lock panel, 12" wide panels. Always adhere to manufacturer recommendations. Many companies though would approve that panel down to 1.5:12. Your short rafter length (60") plays to your favor on your project. The shorter the rafter length, the less total water the panels have to carry. Snap lock panels are relatively easy to install, and even DIY installation is not uncommon. It helps if the manufacturer is able to provide pre-formed flashings.

Todd Miller
Todd Miller
Isaiah Industries, Inc.

3/15/2020
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24849/find/

Thanks for the reply
so 2:12 even with NE snow is OK - good
( saw that some shakes had higher ratings for snow, so I wondered)

the ClickLock I am looking at is the ClassicMetal aluminum. I know I can tolerate the coating. I have chemical allergies.

I have tested Cromar Vent 3 blue underlayment, would that be appropriate for this product?

I am chemically sensitive so if new decking is required it would be solid poplar boards, is that a problem with this roofing material?

Besides decking and underlayment ( I believe 2 layers of underlayment is required, is that correct?)
are any other materials needed?
I've seen people talk about "insulation" with metal roofs but I don't have any idea what that means.
(this is a small bump out roof, probably was a porch originally)

One more, If by some miracle we could keep the current tar paper roof (which is completely out gassed and intact) could this metal roof be attached directly to it?

thanks again

loretta lodico

3/15/2020
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24851/find/

Thanks Loretta. We'd enjoy being a part of your project. Vent3 is fine beneath the standing seam. Only one layer of underlayment is required. The standing seam could in your case be installed over the old shingles assuming there is a single layer. The poplar decking would be fine. You can sometimes put insulation beneath metal roofs though generally a better place for insulation is on top of the ceilings, not the roof.

Todd Miller
Todd Miller
Isaiah Industries, Inc.

3/16/2020
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24852/find/

Thanks for the reply

the roof is tar paper is that still OK for direct attachment?

Is there any special insulation for a metal roof?

loretta lodico

3/16/2020
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24854/find/

Much of the industry has switched to synthetic underlayment but 30 pound felt paper is also okay beneath metal roofs. Underneath standing seam, you may want a slip sheet on top of that (such as red rosin paper or a synthetic underlayment). As far as rooftop insulation ... always adhere to roofing manufacturer instructions but usually this would be a poly iso board or a rigid urethane forma insulation board.

Todd Miller
Todd Miller
Isaiah Industries, Inc.

3/17/2020
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24855/find/

If you would like to reply to this thread, please log in. If you do not have an Ask the Experts forum user account, create one here.

  • About the MRA
    • Member Companies
    • Leadership
    • MRA News
  • For Professionals
    • Join the MRA
    • Industry Resources
    • Upcoming Events
  • Contact
  • Subscribe
©2018 Metal Roofing Alliance. All Rights Reserved. Privacy Policy Terms and Conditions