Are you a subscriber but don’t have an online account?

Register for full online access.

 
 
 
 

Featured Articles

Zeroing In on Net Zero

Dr. Joe shares what Building Science Corp. has learned about building net zero homes.

Basement Building Science

Do you really understand the moisture and heat dynamics associated with insulated foundation walls?

Solving for Comfort With a 'Smart' Thermostat

Tracking temperature, humidity, set point, and equipment runtime can uncover the causes behind client complaints.

 
 
 

Browse Building Science Subtopics

Engineering

  • A Whole New Engineer

    A new book, A Whole New Engineer, explores the coming revolution in engineering ... well, in all aspects of construction, really.

     
  • To the Lighthouse

    It's not your typical summer-home renovation, but you can't beat the view.

     
  • That's About the Size of It

    Where does the Lowe's ruling on lumber labeling leave those of us in the construction industry?

     
  • Adding an Insulated Envelope(Subscriber content)

    An airtight "puff jacket" achieves near Passive House levels.

     

Performance Measurement

 

Building Science

  • Hardware on European windows allow them to tilt in for ventilation.

    A Look Through European Windows

    A behind-the-scenes look at the materials and methods used in making high-performance tilt-and-turn windows.

     
  • Studying Moisture in Fat Walls (Subscriber content)

    Comparing the performance of a cellulose-insulated double wall against the same wall insulated with two different thicknesses of low-density open-cell spray foam.

     
  • House Move: Saving a Luxury Home From Beach Erosion

    When a compromised island setting requires moving not one, but four, massive structures, the logistical challenges are daunting and the process is nothing short of impressive.

     
  • Words Matter

    What the Patagonian Toothfish can teach us about building science.

     
  • Mixed Reality: The Future of Building Design?

    Is augmented reality just a smart-phone party trick or could it be solace for an increasingly populated planet?

     
  • A Drywaller’s Approach to Air Sealing Homes (Subscriber content)

    Air leaks through the building shell can have a significant effect on a home’s durability, energy use, and indoor air quality. Myron Ferguson explains how drywall can be an important part of the air barrier of an enclosure.

     
  • Building Structural Brackets for a Balcony Deck (Subscriber content)

    Specialty building components expert Mike Rand provides pointers on constructing structural brackets for a balcony deck.

     
  • ReVision Energys Dave Ragsdale connects the control circuit of the outdoor unit of a 1-ton Fujitsu mini-split on a home near Portland, Maine. In combination with a wood stove, the mini-split will mostly idle the homes existing oil boiler, except during the coldest part of the year.

    Heat Pumps for Cold Climates (Subscriber content)

    Mini-split heat pumps were a major topic at the Northeast Sustainable Energy Association (NESEA) BuildingEnergy 14 conference in Boston this year. Ted Cushman explains why and how these mini-splits shine in cold climates.

     
  • JLC May Letters

    Tips for soldering a lap seam; the usefulness of the GRK lap harness; and the future of vocational training.

     
  • Mapping Green Space

    The EPA's EnviroAtlas provides a one-stop reference for identifying everything from population density and rainfall to "impaired waterways" and acid-rain concentrations.

     
  • Printing Houses

    Printing a house, I wonder what the local code official and the historical commission would have to say about THAT!

     
  • Working With Flexible Flashing (Subscriber content)

    Some contractors still don’t understand how to get the most out of these products. Here are some tips for installations that stand firm for the long haul.

     
  • Making the Case for Zero-Leak Ducts

    Mike MacFarland outlines the benefits of leak-free ducts.

     
  • Fastening Deck Ledger to an I-Joist Floor

    If you need to attach a deck ledger to a house with I-Joist floors, first figure out if the rim board is structural and go from there

     
  • Gold Coat Joist Hangar Hardware

    Engineered for corrosive environments, such as right on the ocean.

     
  • When it comes to improving the energy efficiency of a building, lots of attention is paid to insulation R-values, thermal bridges, and air sealing. But dont forget the windows, which account for the biggest energy loss in a high-R wall.

    To Improve the Energy Performance of Walls, Look at Total R-Value (Subscriber content)

    Today’s builders are learning to mitigate thermal bridging by using alternative framing techniques, continuous exterior rigid foam products, or both.

     
  • Owens Corning Propink EcoTouch R-20 Insulation

    New energy codes are calling for higher R-values in the walls

     
  • DuPont ThermaWrap R5.0

    Polyester-lined Tyvek provides R-5 insulation

     
  • Broan HRVs and ERVs

    HEPA filtration removes most airborne bacteria and viruses

     
  • New Joists for an Old Floor (Subscriber content)

    The best remedy for a sagging out-of-level floor is putting in new LVL joists and engineered subfloor.

     
 
 
 
JLC Field Guide to Decking