Posted by daestrom on August 14, 2008, 2:55 am
When I read the subject I had to laugh. No one around here would
contemplate the idea. Something about sub-zero temperatures for a couple of
month a year...
But I suppose if freezing is never a concern (even Florida gets an
occasional frost), then go for it.
Posted by Robert Scott on August 14, 2008, 12:51 pm
There is something disturbing about making something that gives you an incentive
to continue to have poor attic ventilation, or even to make your attic
ventilation worse in order to raise the efficiency of the water heating system.
That is like a government basing its budget on having a tax on prostitution.
Posted by Steve O'Hara-Smith on August 18, 2008, 5:40 am
On Thu, 14 Aug 2008 12:51:02 GMT
---@---.--- (Robert Scott) wrote:
Why ? What's so good about ventilating an attic rather than
using it as a heat trap.
Everywhere prostitution is legal it is taxed just like any other
income. I don't think it's a substantial part of any governments income
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Posted by Robert Scott on August 18, 2008, 4:28 pm
It encourages the formation of ice dams in the winter, which causes snow melt to
back up under the shingles and leak into the decking, which rots the decking and
rafters, leading to premature roof failure.
Posted by J. Clarke on August 18, 2008, 5:04 pm
Steve O'Hara-Smith wrote:
Well, for one thing heat is the enemy of shingles--if you don't have
proper ventilation and are in a hot climate they'll very likely fail
Then there's elimination of moisture--without adequate ventilation you
can get enough moisture buildup in the attic to result in mold on the
structure, and where there is mold there is shortly after rot.
Then there are ice dams in winter.
There's a reason that every new roof that goes on in most of the US
has a ridge vent, and the reason is not that it looks snarfy or makes
big profits for the roofer.
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