Vented soffit - 140 yr old house - GreenBuildingAdvisor

Vented soffit – 140 yr old house jb9607 | Posted in General Questions on February 14, 2026 03:31pm Hey – homeowner here, with a 140 year old Queen Anne. With all the snow this winter, I’ve got major ice dam issues. My attic desperately needs additional sealing & insulation, but my question is around the soffit. It’s currently not vented, given it was built in the 1880s. Should it be replaced with something vented while I’m tackling the sealing & insulation? Any issues or concerns with retrofitting something this old with vents? Answer GBA Detail Library A collection of one thousand construction details organized by climate and house part Search and download construction details Join the leading community of building science experts Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field. Start free trial Related Questions Advice to fix/retrofit heating/cooling and insulation problems in 23 yr old house Replacing cedar shakes on 96 yr old house – vapor barrier? Insulating inaccessible Rim Joist of 100 yr old house Replacing cladding on 130 yr-old building Replies Expert Member MALCOLM TAYLOR | Feb 14, 2026 03:58pm | #1 ib9607, Venting the soffits only makes sense if there will be an unimpeded path above the new roof insulation in each rafter bay from the eaves to the peak, and that there is a vent outlet at the ridge for the air which has been brought in. Log in or create an account to post an answe...