All Blog Posts Tagged 'science' (14)

Raising the BARrier in North Carolina Mountain Home, Air Tight Ceiling

Raising the BARrier in North Carolina Mountain Home, Making it Super Air Tight!

The AIR Barrier at the ceiling plane, that is....

At LG Squared, we have experimented with many ways to design and build a roof assembly for a home. Without question, we have found the ventilated attic to be THE most effective.…


Added by Chris Laumer-Giddens on September 16, 2016 at 4:30am — 5 Comments

Building with Rocks, Rocks. Check out the Drying Potential

Building with Rocks, Rocks! Check out the Drying Potential.

Check this out! This 24" x 48" x 2" thick piece of rigid stone wool insulation was left out overnight (on purpose) on the High Performance Tiny House project site, to see how it handles a deluge of rain, which we knew was coming. One of the many …


Added by Chris Laumer-Giddens on July 26, 2016 at 3:30am — No Comments

Elevate Energy Mythbusters: Windows & Attics Edition

This blog post is guest written by former staff member Eric Keeley.

Great enthusiasm for home energy efficiency is often matched with misconceptions.  Let’s explore a bit and figure out the difference between what we perceive, believe, and what we know to be true.

Our Perception

Windows: We see through them every day and curse the drafts coming through and around them. We are certain that old windows are the main culprit behind why we spend so much…


Added by Amber Vignieri on June 24, 2016 at 10:00am — 4 Comments

Well-Built Dumb Home

Well-Built Dumb Home

  • One of the smartest things ever said about building a new home, was about something dumb:…


Added by Chris Laumer-Giddens on February 17, 2016 at 5:45am — 3 Comments

Insulating a Slab-On-Grade in Hotlanta

Insulating a Slab-On-Grade in Hotlanta

Why in the world are we insulating a slab-on-grade in Hotlanta?

Reason #1: Atlanta is not, I repeat, NOT a cooling dominated climate. Wait...What?!?!?

Yes, it gets plenty hot here in the Summer, but it also gets downright cold. Which is why it's one of the more difficult climates to design and build in. We get both extremes.

I'm not saying we know what cold is, like all y'all do up yonder in them…


Added by Chris Laumer-Giddens on February 1, 2016 at 4:03am — 9 Comments

Sparky Doubled the Air Leakage in this Home!

Sparky Doubled the Air Leakage in this Home

This is the home.


This is the hole that Sparky (electrician) "innocently" made to feed a wire to the light on the front porch of the High Performance Bungalow. I discovered it a day or two after our home performance diagnostics team, Carl Seville and Abe Kruger, of SK…


Added by Chris Laumer-Giddens on November 24, 2015 at 6:08am — 4 Comments

Common acronyms and definitions

The building science and home performance industry is full of confusing acronyms. These acronyms are used a lot in articles, blog posts. social media posts, webinars, conference sessions, etc. To help you, we have compiled a list of some of the more popular acronyms you’re likely to hear or read.

ABAA – Air Barrier Association of America

The Air Barrier Association of America (ABAA) was incorporated in Massachusetts in 2001 and consists of…


Added by Kim Tanner on September 14, 2015 at 8:00am — 1 Comment

Building Science is Worthless...

Building Science is Worthless...

Thousands of hours went in this construction detail. When we factor all the time spent by building science engineers, from all over the world,…


Added by Chris Laumer-Giddens on August 25, 2015 at 3:30am — 1 Comment

Shades of Gray in Residential Construction Morality

I was called in to perform a last minute duct test for a modular home builder.  He was all in a dither to have a duct test and a blower door test done on a Friday so that he could get his Certificate of Occupancy (CO) so the homeowner could move in the following Monday.  He said that he’d just found out that he needed these tests.  The building inspector asked for them at the last minute!

I was glad to do it partially because it’s good to have builders aware of what is going on…


Added by Paul Raymer on April 27, 2015 at 5:24am — 22 Comments

14 Design Don’ts for High Performance Homes

There are a lot of ways to design a home. Designing one for high…


Added by Chris Laumer-Giddens on February 14, 2013 at 7:30am — 8 Comments

Words That Turn Home Energy Pros Into Building Science Dorks

"Ma'am, we've just tested your house and found your infiltration rate to be 16.7 ACH50, your R-values to be only 26% of the IECC…


Added by Allison A. Bailes III on October 18, 2012 at 8:01am — 4 Comments

A Solar House with Soul in Wiscasset, Maine

A brand new passive solar house completes the first piece of a long held dream for homeowner Jason Peacock. A builder and LEED Accredited Professional, B.A. Jason also works at Maine Green Building Supply where he has honed his sustainable knowledge. Passionate about green, when Jason bought 36 acres of land just outside of Wiscasset, Maine he had a very specific vision in mind.…


Added by Samuel Strickland on May 23, 2012 at 1:45pm — No Comments

A Green Home - It's Just Good Design

What makes a Green Home green? Is it the bamboo floors? Maybe it’s the low-e windows or the extra insulation in the walls? What about a high efficiency heating and cooling system? Or maybe it's a plaque by your front door that says, “I'm Green!”?

How about all of the above and then…


Added by Chris Laumer-Giddens on April 11, 2011 at 8:02am — No Comments

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