EcoRenovator - View Single Post - Attic heat project designed from the bottom up

Exeric · 11-20-13, 06:41 PM

Thanks Daox. It rained all yesterday and the temp rise got to an amazing 4 degrees in the attic! Nothing like rain to keep down the roof temps. Today it was totally overcast and threatening until late afternoon. Yet the attic temp still got to 24 degrees over ambient. No pictures.

I finally closed the motorized roof damper. I bought an optional switch that mounts on the damper so I could monitor the damper position without physically inspecting it. My ohmmeter on the switch contact wiring told me it had closed but since it was the first time operating it I didn't quite trust my reading. So I went up, removed the center insulation and peeked through the backdraft damper. It did indeed close.

So we'll see just how much difference a closed roof vent makes on my system. Here's hoping it's significant.

11-20-13, 06:41 PM	#22
Exeric Apprentice EcoRenovator Join Date: Aug 2012 Location: California Posts: 274 Thanks: 19 Thanked 37 Times in 28 Posts	Thanks Daox. It rained all yesterday and the temp rise got to an amazing 4 degrees in the attic! Nothing like rain to keep down the roof temps. Today it was totally overcast and threatening until late afternoon. Yet the attic temp still got to 24 degrees over ambient. No pictures. I finally closed the motorized roof damper. I bought an optional switch that mounts on the damper so I could monitor the damper position without physically inspecting it. My ohmmeter on the switch contact wiring told me it had closed but since it was the first time operating it I didn't quite trust my reading. So I went up, removed the center insulation and peeked through the backdraft damper. It did indeed close. So we'll see just how much difference a closed roof vent makes on my system. Here's hoping it's significant.