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Featured Articles

Major Surgery for a Failing Fat Wall

The worst decades for building science weren’t in the 1800s; they were late 1970s through 1990s. Here’s one from the 80’s that’s getting a major overhaul.

Building With Cross Laminated Timber

The solid CLT panels simplify making the building envelope airtight, and they help moderate fluctuations in moisture and heat.

Working With Thick Layers of Exterior Foam

JLC editor Clayton DeKorne reviews the latest Department of Energy guidelines on using rigid foam insulation.


Browse Building Science Subtopics


Performance Measurement

  • Roofing With Tile

    Roof tile can be adapted to nearly any environmental condition and climate zone. In this article we’ll focus on two of the most challenging for tile: high-wind and cold-climate regions.

  • Installing Engineered Siding

    Working efficiently ensures durability and profitability.

  • Laminated Framing Lumber (LFL)

    Made from black spruce, LFL engineered lumber reportedly has a better fire rating than LVL.

  • Hanging Drywall Smart

    Don't expect the taper to fix your mistakes.


Building Science

  • Retrofit Soundproofing

    Practical solutions for quieting homes

  • Rules for Drilling and Notching Deck Framing

    Following these simple guidelines when modifying joists, beams, and posts will prevent structural problems later on.

  • December 2014 Letters

    House on wrong lot; OSHA; I-joist roofs; home-performance contracting profitable where energy prices are high

  • The Extractor Nail Puller

    Because it grabs nails without cutting through the nail shank, The Extractor can help with deconstruction work where you want to preserve the materials for reuse.

  • Petri Dish House

    A cautionary tale of high indoor humidity, mold problems, and what not to do in a home if you want healthy clients.

  • Electric Water Heating for a Low-Load Home

    Installing an electric tankless water heater proves to be cost-effective and energy efficient.

  • Installing Windows in a Deep Wall

    Double stud walls that allow for higher R-values of insulation create particular challenges for window installation.

  • How Small Jobs Killed My Business

    Chasing energy rebates takes the focus off solving problems and puts it on getting as much rebate with as little out of pocket as possible, resulting in small jobs and mediocre performance improvement.

  • Building Science Summer Camp 2014

    This summer, about 500 of brightest minds in the science of construction attended the Building Science summer camp hosted by Building Science Corporation in Westford MA.

  • Solving for Comfort With a 'Smart' Thermostat

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

  • That's About the Size of It

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

  • Choosing a Whole-House Ventilation Strategy (Subscriber content)

    An update on current standards and how to meet them

  • Adding an Insulated Envelope (Subscriber content)

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

  • September 2014 Letters

    Contractor education requirements, bolts for attaching sills to foundations, energy-saving tips, sprinkler mandate

  • A Passive House Consultant's Toolkit

    In addition to the training, here are the tools you'll need to design a Passive House.

  • Monitoring Home Performance

    Certain home performance problems are hard to catch because you may not be at the house when they happen. Here are a few tips on how to keep tabs on condensation, temperature problems, and more.

  • Strapping Ceilings (Subscriber content)

    Strapping serves many purposes both for framers, as well as for many of the subs who follow.

  • Norbord Onsite Mobile App

    A free app helps users troubleshoot OSB problems on the jobsite.

  • K.N. Crowder Catch'N'Close Door Track

    Gentle closing action saves fingers from getting caught between the door and the door jamb.

  • More Than 'Tips' Needed to Improve Energy Efficiency (Subscriber content)

    A thorough, step-by-step analysis that treats the home as an integrated system is the only route to true performance improvements, including lower energy bills and better indoor air quality.