NEWS

A New Technical Guide to Building ADUs

Beyond Efficiency has released the first in a series of regional guides with design and construction details for accessory dwelling units Beyond Efficiency has released the first in a series of regional guides with design and construction details for accessory dwelling unitsAttics, Design, Roofs, Walls, ADU, Beyond Efficiency ADU Building Guide, building ADU, building codes for ADUs, Hot water for ADU, HVAC for ADU, Minisplits for ADU, technical details for AUDsRead MoreGreenBuildingAdvisor

Cut-and-cobble polyiso in 40+ year-old cathedral ceiling?

SUMMARY:  Is cutting-and-cobbling polyiso into an unvented cathedral ceiling in CZ-2 (hot/humid) safe (re: condensation/rot under decking), if the decking has lasted 43 years with no decking rot, fiberglass batts… SUMMARY:  Is cutting-and-cobbling polyiso into an unvented cathedral ceiling in CZ-2 (hot/humid) safe (re: condensation/rot under decking), if the decking has lasted 43 years with no decking rot, fiberglass batts…Read MoreGreenBuildingAdvisor

Studies on IAQ of balanced ventilation vs no ventilation?

Someone in the industry recently challenged my assertion that having a properly designed and installed ERV was obviously better for indoor air quality than simply opening a window, and asked… Someone in the industry recently challenged my assertion that having a properly designed and installed ERV was obviously better for indoor air quality than simply opening a window, and asked…Read MoreGreenBuildingAdvisor

ERV Connected to Central System

Greetings,I am trying to figure out if an ERV can be successfully linked to my central HVAC system.Many of the installation manuals specify minimum distances between components, but my HVAC… Greetings,I am trying to figure out if an ERV can be successfully linked to my central HVAC system.Many of the installation manuals specify minimum distances between components, but my HVAC…Read MoreGreenBuildingAdvisor

Basement Wall Insulation & Finishing

Hello,I’ve been reading around to try and gather information on basement insulation and wondering if the following would work…I have already installed and taped 1″ xps and am planning on… Hello,I’ve been reading around to try and gather information on basement insulation and wondering if the following would work…I have already installed and taped 1″ xps and am planning on…Read MoreGreenBuildingAdvisor

ERV recommendation for replacement

Hi,I have a new all electric two story house with slab on grade built to the passive house standard but not certified. The pre-drywall blower door test came back with… Hi,I have a new all electric two story house with slab on grade built to the passive house standard but not certified. The pre-drywall blower door test came back with…Read MoreGreenBuildingAdvisor

Understanding Pressure Differences

Suction cups demonstrate the second law of thermodynamics, which dictates much of building science Suction cups demonstrate the second law of thermodynamics, which dictates much of building scienceUncategorized, Air Pressure, how suction works, second law of thermodynamicsRead MoreGreenBuildingAdvisor

Roof venting and soffits in fire-rated roof overhangs

Hi, I’m working on a 2-story, small single family residential design (climate zone 5) as a builder-owner, and we’re considering whether to pursue a 1h fire rated roof overhang to… Hi, I’m working on a 2-story, small single family residential design (climate zone 5) as a builder-owner, and we’re considering whether to pursue a 1h fire rated roof overhang to…Read MoreGreenBuildingAdvisor

1970s remodel with fiberboard sheathing, how to upgrade with polyiso

Hi–I got a weird remodel and looking for advice.  I have 1976 ranch in the puget sound area, IECC 4C and it has fiberboard sheathing with ply in the corners… Hi–I got a weird remodel and looking for advice.  I have 1976 ranch in the puget sound area, IECC 4C and it has fiberboard sheathing with ply in the corners…Read MoreGreenBuildingAdvisor

ICF Foundation with Stick-Framed Walls

A combination of standard building materials and applied building science yields adaptable, replicable, energy-smart assemblies A combination of standard building materials and applied building science yields adaptable, replicable, energy-smart assembliesDesign, Foundations, Walls, cavity and continuous insulation, hybrid insulation, ICF, ICF basement, ICF foundation, plywood air barrierRead MoreGreenBuildingAdvisor

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