Return to the Home Repair Forum | Post a Follow-Up

 o
Roof deicing system?

Posted by AlexCL (My Page) on
Fri, May 23, 14 at 10:16

I had big ice dam problem last winter and given the furnace is in attic, I think I will need a roof deicing system to prevent ice dam.

I am considering between a heat panel system from Bylin or a heated gutter system. I am wondering which one is better in prevent ice dam? Heat Panel system is more expensive and I am wondering if it worths the extra money.

Thanks!


Follow-Up Postings:

 o
RE: Roof deicing system?

The best prevention for ice dams is proper roof ventilation, NOT expensive bandaids after the fact. It will be better for your home overall to address that issue as well.


 o
RE: Roof deicing system?

Thanks live_wire_oak. I have tried changing the roof ventilation, but multiple roofers mentioned because of the roof design (hard to retrofit soffit vent) and the fact that furnace is in attic, we need to use bandaid/last resort type solution. I explored the possibility of moving the furnace away but no luck there as well.


 o
RE: Roof deicing system?

I suggest you investigate a "hot roof" system which is the exact opposite of lwo's ventilated "cold roof" system. With the cold roof the ventilation keeps the roof cold so no snow melts then refreezes. With a hot roof, there is no ventilation, but the heavy insulation between the attic space keeps the heat from escaping, melting the snow, and freezing, and creating the ice damming.


 o
RE: Roof deicing system?

Thanks Trebruchet. For hot roof system, do you mean spray foaming the entire roof?


 o
RE: Roof deicing system?

AlexCL:

Spray foaming the rafter cavities is a large part of it. The new foam has unbelievable insulation R-value.


 o
RE: Roof deicing system?

Agree that dealing with the problem is a better solution than an expensive-to-operate bandaid. Sealing the attic and applying spray foam at the rafters and sidewalls to bring your HVAC equipment inside the conditioned envelope of the house has many advantages for energy efficiency as well as ice dam prevention.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Home Repair Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here