Since we got our Montecito fireplace we have gotten ice dams from snow melting off the roof around the roof chase and area near the chimney vent in attic. I would like to further insulate the insulated double wall vent by surrounding the chimney with a fence to keep insulation away from the chimney at required distance then wrap 6" of insulaltion on the fencing. We are securing the insulation with chicken wire to 2x4's. The area of concern is outlined in green in the photo.
My concern is the uninsulated chase sitting on the roof, will that area get too hot inside the walls. Should I put a vent near the top of the chase to let out the heat. I know it is desireable to have a warm chimney but I do not want the uninsulated boards and vinyl siding of the chase to be affected by excessive heat.
Or even add a vent to the bottom out to the soffit area for intake of cold air.
Attic vent 0989: area in green to be insulated with 6" of insulation
chase install: shows interior of roof chase
House rear shows finished chase and excessively tall chimney that installers put in, they did not have right pipe lengths!
My concern is the uninsulated chase sitting on the roof, will that area get too hot inside the walls. Should I put a vent near the top of the chase to let out the heat. I know it is desireable to have a warm chimney but I do not want the uninsulated boards and vinyl siding of the chase to be affected by excessive heat.
Or even add a vent to the bottom out to the soffit area for intake of cold air.
Attic vent 0989: area in green to be insulated with 6" of insulation
chase install: shows interior of roof chase
House rear shows finished chase and excessively tall chimney that installers put in, they did not have right pipe lengths!