If the house has gutters you might want to put some heat strips in the
gutters, I had this problem in my MA house, water from the melting
bottom of snow on the roof ran down into the gutters and froze then the
next water running down backed up. I put some heater wire in there with
a switch in the house, when conditions were favorable I turned on the
strips and that seemed to solve the problem
--FT
On 7/30/21 5:38 PM, dan penoff.com via Mercedes wrote:
Definitely, the insulation guys will be doing this from below. Just having the
insulation sorted should eliminate the ice dams, and this house definitely had
them based on what we can see on the ceilings in a couple of areas. When the
roof is done they will install the ice dam material on the lower portion of the
roof as well. Not sure what it’s called but I know of it having lived in cold
climates.
-D
On Jul 30, 2021, at 5:26 PM, Randy Bennell via Mercedes <mercedes@okiebenz.com>
wrote:
On 30/07/2021 4:07 PM, dan penoff.com via Mercedes wrote:
......Roof is solid but about 15 years old, so I’ve got a roofer coming out for
an estimate. Like a lot of these older homes there have been issues with ice
dams, so I’ll look to a roof replacement to resolve this as well as possibly
putting up heat tapes. It’s a small roof with a fairly low pitch, so the area
isn’t significant. If the cost to roof it is under $10k I’ll probably go ahead
and have it done.
Ice dams are often caused by heat transfer from the living space below to the
roof deck. The solution seems to be to keep the roof deck cold. If you are
going to have the roof done anyway, cut back the deck above the side walls and
install barriers to keep the insulation from touching the roof decking. There
are commercial ones available but if that is not commonly available in AZ they
could be made from plywood or something similar. An inch of clearance between
the insulation and the deck should be sufficient. https://tinyurl.com/4hevsszd
You should be able to avoid having heat tapes.
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--
--FT
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