Contact Us

Use the form on the right to contact us.

You can edit the text in this area, and change where the contact form on the right submits to, by entering edit mode using the modes on the bottom right. 

Form Block
This form needs a storage option. Double-click here to edit this form, and tell us where to save form submissions in the Storage tab. Learn more


Atlanta, GA

773.398.5288

Advanced residential construction and home improvement consulting and owner's advocacy in Atlanta, using the latest building performance diagnostic and modeling techniques and tools. Airtightness, insulation, HVAC, ventilation, moisture, and air quality and EMF consulting for homeowners and building professionals alike.

Videos/Podcasts/Articles

Home performance articles and stories from the field with internationally respected building forensics guru Corbett Lunsford at the Building Performance Workshop. Hear new episodes of the Building Performance Podcast, see new videos from the Home Performance YouTube channel, and learn all about how diagnostic testing (more than an 'Energy Audit') can make home improvement and new home construction a proven process!

HOW TO BUILD A SHOJI DOOR FROM PUREBOND PLYWOOD

Corbett Lunsford

Our #TinyLab is a touring tiny house on wheels, which means it takes a lot of abuse as we travel the U.S. on the Proof Is Possible Tour. We’re teaching home performance, showing people how to get diagnostic proof when doing home improvements or building/buying a home.

One of the major problems in the home market is that people just don’t know what they don’t know. They don’t know that air leakage is the biggest problem in their homes, they don’t know that they’re making carbon monoxide every time they use a gas stove, and they don’t know that the formaldehyde in plywood is slowly poisoning their families. That’s what the tour is about.

Because we built the #TinyLab very airtight, almost every visible surface in our home is made of Purebond Formaldehyde-Free Plywood. We didn’t even waste time thinking about air purifiers or other band-aids; if we don’t want toxins in the house, it’s easier if we don’t bring them inside in the first place. We decided to use the Purebond for our Shoji Door to the bathroom, too- faster than using wood framing pieces, and going with a hardware-free sliding door would mean more durability overall. Here’s how the door was built:

1. Cut two sheets of Purebond ½” pre-finished plywood to size, with an extra ½” in each direction. Clamp them face-to-face. Measure and trace the cut-outs on the unfinished top side, putting the extra ½” along just two edges (i.e., bottom and right side) so that the other two edges are your reference 'finished' edges. You'll cut the extra ½” off after the door is assembled, to ensure a flat, straight edge on every side.

2. Cut the two sheets with a jigsaw to create the spaces for the rice paper, and any vents for pressure relief between rooms.

3. Dust the sheets off and stain the interior cuts you just made to match the veneer.

4. Prep your glue table with clamps- lots of them. Cut your rice paper to fit the full span of cut-outs with 1" to spare on each side.  Working fast but thoroughly, spread glue on the unfinished faces of both sheets simultaneously, and sandwich the rice paper between them.

5. Clamp the hell out of the assembled door, making sure the rice paper is taut, the cut-outs line up, and the two finished edges are even.

6. After letting the glue dry, unclamp the double-thickness door and cut the extra ½” away from the two edges, leaving all four edges perfectly even and smooth. Stain the outside edges to match the veneer.

7. Install the Shoji door in the jamb where it will slide (we used a pre-made sliding door frame, and removed the hardware and metal components for wheels) and seat it in a 1/16" waxed groove in the threshold. Attach adhesive felt strips to the pocket jamb to keep the veneer from being scratched.

8. Install the door and the jamb pieces that will lock in the top and closing side- DONE!

Home Performance Diagnostics Museum with Neil Moyer

Corbett Lunsford

Building forensics guru Corbett Lunsford gets his fix for prototypes of the testing tools we all know and love in the collection of American Treasure Neil Moyer: the first duct tightness tester (or Duct Blaster) built by Gary Nelson, a handmade flow pan (or Exhaust Fan Flow Hood), and a DIY House of Pressure!

#TinyLab Noise Reduction Test with APC Cork Flooring

Corbett Lunsford

Grace and Corbett Lunsford show not just the installation of APC Cork floating floor planks, but also the sound reduction testing to prove that it's performing the way it's supposed to! See the #TinyLab on the Proof Is Possible Tour in 2016: http://ProofisPossible.com

How to Test for Radon

Corbett Lunsford

Building forensics guru Corbett Lunsford demonstrates how to test for pressure imbalances that might draw radon into your home, and how to REALLY find out how much radon there is in the air you're breathing. More info on the test tools used at: http://TruTechTools.com and http://Retrotec.com

How to Keep a Rainscreen Airtight

Corbett Lunsford

Corbett Lunsford had a problem finishing the ventilation holes in the rain screen of the #TinyLab, and apparently invented a new tape technique using 475 High Performance Building Supply's Tescon Vana. Voila: Corbett's Car Wash technique.

Installing & Testing a Mitsubishi Ductless Mini-Split

Corbett Lunsford

Building Performance Workshop's Corbett Lunsford, with expert help from Uplifting Air's Brad Lemley, installs and commissions a 1/2 ton Mitsubishi ductless mini-split heat pump on the #TinyLab tiny house on wheels for the Proof Is Possible Tour. Come see us in 20 cities across the US at: http://ProofisPossible.com

How to Insulate a #TinyLab (and any other house)

Corbett Lunsford

Infrared expert Corbett Lunsford uses the FLIR T660 infrared thermal camera to illustrate how insulation was installed in the #TinyLab for optimal control over heat bleed.  For more info about where you can tour the #TinyLab on its 20-city Proof Is Possible Tour, visit:
http://ProofIsPossible.com

Airsealing Membranes and Tape for the #TinyLab

Corbett Lunsford

Home performance guru Corbett Lunsford explains 475 Building Supply's Intello air barrier with vapor variable control. See how you can ensure control over drafts, condensation, and air quality problems. Feel the difference yourself on the Proof Is Possible Tour!

KEYNOTE: InfraMation 2016 in Las Vegas, Sept 27-29 2016

Corbett Lunsford

I LOVE LAS VEGAS IN INFRARED. Oh boy, is this going to be wild.

I've been invited to present a keynote address AND a workshop on Building Forensics at InfraMation 2016, which is a fantastic conference all about infrared thermal imaging and photography.

There'll even be a grizzly bear expert named Casey Anderson who watches them through an infrared camera (yes, it turns out they do business in the woods at night).

Hope to see you that week in Las Vegas at the Rio Hotel! REGISTRATION AND MORE INFO HERE.

Stack Effect Made Visible on the #TinyLab

Corbett Lunsford

See hot air rising in a building envelope in real time! A pocket of air is trapped between the Solitex membrane and the exterior plywood of the tiny house.  This is the cheapest airtightness test available to building science fanatics.

If you want to know what this means and why on earth you should care, watch this:

How to Ventilate the #TinyLab (aka How To Pull Your Hair Out)

Corbett Lunsford

From the beginning, we've planned on this high performance tiny house on wheels (THOW) being airtight. That's a no-brainer, and everyone else wants airtight homes too, whether they know it yet or not. If you want to see how bright-eyed and bushy-tailed we were when we started planning the Tiny Lab, check out this webinar on the HVAC design:

After airtight construction, the next important step is always making sure the home is VENTILATED right, with fresh air in just the right amount. Too little fresh air, and you get staleness, odors, condensation, and a deep-seated disgusting feeling. Too much fresh air, and you're flushing conditioned air down the toilet.  The calculation for determining how much fresh air any house needs is called ASHRAE 62.2-2013, and you can see a simplified breakdown of that here:

And finally, you need to decide How Exactly You're Going To Do This.  That's always the sticking point, and designing and building this tiny house on our own has taught us that all day, every day. The devil's in the details. So began our ventilation adventure, and we immediately talked with our longtime friends at Panasonic, who recommended three pieces of equipment:

The ventilation strategy we were planning on initially was to exhaust air (20cfm minimum) from the shower (at the top right), which is only a few feet away from the kitchen (the L-shaped cabinet just below it), and supplying fresh air at the rear of the tiny house, in the underloft bedroom (at bottom).

We immediately faced a challenge with pressure equalization. Since this tiny house would be so airtight, the results of the blower door test would likely be less than 67cfm@50Pascals (2.0 ACH50). Without all the mumbo jumbo, that means that if I ran a regular exhaust fan in the bathroom or kitchen at anything close to 70cfm, I'd be sucking so hard on the house it would be as if a 20 mph wind was blowing on every single surface of the house (and that's a lot of surface- about 1000 sq. ft.)

Also, while the WhisperGreen bath exhaust fan can be 'manifolded' (which means connecting a duct system to the fan to distribute the air wherever you want it), the spot ERV cannot. A really cool MacGyver hack was recommended by Panasonic's technical team, which I think is awesome and could easily be done by anyone else per the instructions:

Although this is all very cool, it was deemed too iffy to work properly for the Tiny Lab because of all the customizations we're making with the on-wheels aspect, the tightness, the tiny size, etc. 

To keep this story from being ten pages long, let me just say that we are now on our FOURTH and final ventilation plan. Lawrence Berkeley National Laboratory's Brett Singer and our favorite dehumidification guru Lew Harriman both strongly urged us to use a fully-ducted HEAT Recovery Ventilator instead of the ENERGY Recovery Ventilator (which exchanges both heat and humidity). We'll be fighting the humidity the whole way, since every shower, cup of tea, and exhale will add to the moisture in the tiny house.

Also, we all agreed it would be infinitely better to exhaust the stovetop gases directly to outdoors with an ENERGY STAR kitchen exhaust hood.  We're keeping the pressure imbalances in check with a hole in the wall controlled with a mechanical damper that's activated by pressure imbalances.

Our final ventilation strategy is from our Product Partner BROAN, and we'll show you exactly how that miracle cure works when the system arrives next week!  Thanks for tuning in, and for your support in these trying times. Whew.