📚 Guides & Standards

Energy efficiency payback periods - any reassessment with scenarios involving much higher energy prices? - GreenBuildingAdvisor

Previously it was generally accepted in America that many energy efficiency building strategies could reduce operating costs, but generally wouldn’t pay off quickly. So they have been considered more for […]

Poly Foam Board and fiberglass batt - GreenBuildingAdvisor

I’m in South Louisiana building new home, 2×6 wall construction. Considering installing 2″ poly foam board, then r-13 faced fiberglass batt in exterior wall. The siding I’m using is rated […]

Plenum Truss-Keepin’ the Ducts Inside - GreenBuildingAdvisor

Prevent energy loss and mold with ducts inside the home. Learn strategies like plenum trusses for efficient HVAC systems.

Kebony Furfurylated wood - GreenBuildingAdvisor

One of the glossy magazines I get had a spread on a house sided with a product called “Kebony,” which is a brand of furfurylated wood. You can read about […]

Cantilevered Floor – Comfortboard Outsulation? - GreenBuildingAdvisor

I’m working to air seal & insulate a small cantilevered floor system in climate zone 4C (western WA). It’s about 6’x8′ and framed with 2x8s, between which is some unfaced […]

Home Battery Backup Systems: An Overview of Today’s Options - GreenBuildingAdvisor

Explore home battery systems' history, types, and benefits. Learn about resilient power options for emergencies and eco-friendly living.

ERV port placement in kitchen - GreenBuildingAdvisor

I am retrofitting an ERV in my finished home and I need advice on where to locate exhaust air (i.e. intake) registers in my kitchen. This is an exhaust ducted […]

Two Proposed Bills Could Profoundly Impact U.S. Housing Markets - GreenBuildingAdvisor

Discover proposed bipartisan bills addressing America's housing crisis, aiming to boost affordability and streamline housing regulations.

Length and angle of awning to block sun in summer and let it through during winter? - GreenBuildingAdvisor

I want an awning to allow sun in during the winter and block it during the summer. Is there an online calculator where I can put in my latitude and […]

Style Over Safety Part II: More on What’s Wrong with Today’s Bathroom Design - GreenBuildingAdvisor

Discover why current bathroom designs might be flawed with insights on toilet history, hygiene, and safety for a better bathroom experience.

EXT and INT insulation in Zone 5 - GreenBuildingAdvisor

Can you use both Exterior and interior insulation in zone 5 with out condensation concerns? Watched Asiri design video and he showed a wall assemby that one builder we talked […]

Vertical metal siding support over 8" rockwool - GreenBuildingAdvisor

Hello,I am beginning construction on a new home this spring. Most of my plans are in place but I just realized that the steel board and batten siding I plan […]

How long after posting do questions become archived? - GreenBuildingAdvisor

I noticed this was a new feature of the forum, maybe to prevent spam bot posts. At what point after posting does a question become archived?

Sealing slab cracks against radon - GreenBuildingAdvisor

My house is slab on grade, membrane underneath. We have been monitoring radon and it varies from .13 to 8.5 pCl/L, depending on whether the windows are open, cracked or […]

Detached pole style garage details - GreenBuildingAdvisor

We are having a pole building built to use as a detached garage. Central WI and our contractor plans to wrap the wood beam exterior with Kimberly Clark house wrap […]

"Removing Particulates from Indoor Air" Thanks but could have been better (IMO) - GreenBuildingAdvisor

Here is some feedback on Martin Holladay’s January 2, 2026 blog “Removing Particulates from Indoor Air”.   The State of California maintains an online free search database of a wide […]

Can Clean Energy Eliminate All Rejected Energy? - GreenBuildingAdvisor

Understand energy flow in the US by studying Lawrence Livermore National Lab's charts. Discover the impact of rejected energy.

Water in the basement finally happened - GreenBuildingAdvisor

With all of the rain, water is appearing in the basement. There are random puddles around and water is pouring out from between what I think is two layers of […]

Running electrical on running boards in loft - GreenBuildingAdvisor

I have plans for a timber frame structure on a slab. Is it possible to run romex in the loft — over the t and g and structural joists, and […]

best location for vapor barrier under slab - GreenBuildingAdvisor

I’m looking at these 2 details from the library. The monolithic slab shows a vapor barrier above the insulation, wrapping around the footing. The second image with the non-structural slab […]