Insulation Institute Blog

Profile of a Top One Percent Builder

Since 2013 the U.S. Department of Energy’s (DOE) Housing Innovation Awards has recognized the top builders of zero energy ready homes. Housing Innovation award winners represent the top one percent of builders across the country who meet the most rigorous specifications for High-performance Homes. Among this year’s 24 winners is production builder Charles Thomas Homes.

Founded in 2009, Charles Thomas Homes constructs High-performance Homes that typically command a higher price than competing builders, but also deliver on energy efficiency and comfort, which is important in frosty climate zone 5. Part of the company’s winning approach to constructing energy-efficient homes includes blown fiberglass insulation in the attic and walls, demonstrating that high-performance doesn’t have to mean high price.

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Profile of a Top One Percent Builder

SmartHome Apps to Help Save on Energy Costs

Contributed by Modernize 

There’s all kinds of potential for smarthome devices, from better security to an easier way to turn off the lights. But one of the greatest benefits—at least, environmentally-speaking—is the ability to provide more insight into a home’s energy consumption. Stand-alone smartphone apps can offer suggestions for how to incorporate greener habits into a homeowner’s daily routine. And then there are the device-centric apps, which integrate with existing smart products in the home—such as the utility meter or thermostat—to give homeowners a better readout of their energy use and saving.

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SmartHome Apps to Help Save on Energy Costs

Thriving in a ZEN Landscape

Ask any builder around the country about top challenges and you are pretty likely to hear three things:

  1. Cost and availability of attractive lots;
  2. Finding and cultivating skilled tradespeople; and
  3. Creating high brand awareness with prospective homebuyers.
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Thriving in a ZEN Landscape

Residential Energy Efficiency: The RX For Health

A report released recently by E4 The Future, which promotes residential clean energy and sustainability, examines the body of research supporting the considerable benefits of home performance/energy efficiency measures. The report concludes that not only do energy efficiency measures, such as increased insulation and air sealing, improved heating, and ventilation increase the comfort of the home, but also provide considerable occupant health benefits.

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Residential Energy Efficiency: The RX For Health

Who’s Driving Energy Efficiency

A collection of national, state and regional organizations are driving building energy efficiency through advocacy, research, policy analysis and action

There’s no shortage of information on the economic, energy security and environmental benefits of energy efficiency and new statistics emerge every week. But, while information on the myriad advantages of energy efficiency is abundant and accessible, lesser known are the organizations that are quietly taking a leading role in advancing building and home energy efficiency. This week, we highlight just four of the many organizations driving building energy efficiency at the national, state and regional level:

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Who’s Driving Energy Efficiency

An Architect’s Tips on Selling Energy Savings

In a blog post last month, we posed the question: do consumers want energy efficiency upgrade options? Since then, we’ve received feedback from high performance building advocates, builders and architects – one in particular who offered guidance on selling energy efficient home options to today’s homebuyers.

Antonio de la Carrera of ADLCL Architecture is a Dallas-area architect with experience in sustainable, energy efficient and Net Zero custom homes in cities including Dallas, Boston, Chicago and Mexico City.  His experience has led him to identify three crucial tips that builders of all types and sizes should use to better sell energy efficiency.

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An Architect’s Tips on Selling Energy Savings

New guide on vented attics with buried ducts

Back in December we wrote about a change in the 2018 IECC that laid out a new, prescriptive path for the use of buried ducts in standard vented attics. This practice offers the potential to save significant energy over typical vented attic designs, and can even rival the savings of an unvented attic done with ccSPF under the roof deck, at much lower cost. However, like much of the building code, actually understanding and applying the language is not always easy. To help, we contracted with Home Innovation Research Labs (HIRL) to create a “TechSpec” that lays out how you undertake the practice in a simple, straightforward manner. In addition, HIRL also provides both construction and energy costs of different attic design approaches, including variants of buried ducts. The document speaks for itself, but since our first communication on this new practice we have heard feedback on some areas of confusion that need to get cleared up. Here are the answers to 5 common questions about buried ducts.

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New guide on vented attics with buried ducts

High performance vented attics with buried ducts

When a new version of the International Energy Conservation Code (IECC) is completed there can be a good deal of lag time between publication and market impact. This is because states need to adopt the new code, a process which is measured in years, not weeks or months. However, there can be exceptions to this general rule. The 2018 IECC laid out a prescriptive path for the use of buried ducts with fibrous insulation in vented attics, for all climate zones. This new path was approved because it will allow builders to get much of the energy efficiency benefits of an unvented attic with closed cell spray foam by instead doing a traditional vented attic with the ducts buried in fibrous insulation. Data from DOE’s Building America program shows buried ducts can save more energy than a home with vented attics and ccSPF below the roof. In fact, the data from the DOE report excerpted below shows deeply buried ducts are 20-30% more efficient than an unvented attic system[i]. This code change lowers the cost of designing and building higher performance homes, but if it’s in the 2018 IECC, how can it have an impact now?

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High performance vented attics with buried ducts

Do Homebuyers Want “Energy Upgrade” Packages?

Are builders missing the mark by not offering upgrade options for HERS-Scored homes?

Homebuyers like choices. Builders, ever eager to meet the desires of their buyers, typically offer a dizzying array of choices in products, finishes and designs to suit a wide variety of styles.  Yet seemingly few builders offer consumers a choice in homes at varying energy efficiency targets. Is this a missed opportunity for builders in meeting the growing energy efficiency desires of buyers — an increasing number of whom self-identify as sustainable consumers? Perhaps.

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Do Homebuyers Want “Energy Upgrade” Packages?

A Novel Approach to Vented Attic Design with Mineral Wool

Vented attics have a number of benefits, but also one well known and pesky downside: it is very hard to perfectly air seal the ceiling plane given the number of penetrations you have. This results in energy losses but also, often times, pulling less hygienic air from the attic into the home itself. LG Squared, a firm out of Atlanta offering architecture, interior design, construction, HVAC design and building science consulting, found an interesting way around this problem and wrote about their approach in a recent blog. It involves continuous mineral wool insulation on the exterior, loose fill stone wool in the attic and a unique application for zip sheathing.

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A Novel Approach to Vented Attic Design with Mineral Wool