An Unsettling Modular Construction Myth Is Put To Rest

SimplexOPTIMARecently, I had the opportunity to debunk an industry myth that blown-in fiberglass loose-fill insulation is not a viable option for new modular home construction, as it might settle and lose R-value while in transit between the modular home production facility and the jobsite. This was one of the reasons modular home builder Simplex Homes had avoided using blown-in insulation on their projects for years. This year, however, they found themselves working with our OPTIMA® blown-in fiberglass insulation while building a Net Zero Energy demonstration structure at The Navy Yard in Philadelphia as part of Penn State’s GridSTAR Experience Center.

The plan was to build, insulate and roof the shell of the structure, using modular construction techniques, at the Simplex Homes production facility in Scranton, Pa., and ship it by truck to Philadelphia. Having never used OPTIMA in a modular construction application and concerned about the settling rumor, the builder consulted me for assistance in the design and assembly of the high-performance wall assemblies. I designed for them a high-performance 2×8 wood-framed wall assembly, which offered a total insulation R-value of 35.4. A key component of this assembly is a Blow-in-Blanket® System (BIBS) for the wall cavity featuring a 7-1/4-inch-thick layer of OPTIMA insulation.

With on-site assistance from one of our product engineers, the Simplex Homes crew was able to easily build and insulate the wall assemblies. The building’s shell was trucked to The Navy Yard this past spring, where the remainder of the interior finishes were added. An inspection after its arrival confirmed that the insulation had not moved an inch. Simplex Homes was impressed by their first experience installing OPTIMA and is now looking forward to working with the product in future modular construction projects.

The bottom line is that fiberglass loose-fill insulation is naturally inert and therefore will not settle or lose R-Value over the years, as long as it is installed properly at its full designed thickness. Blown-in fiberglass loose-fill insulation is an asset to any modular construction project, offering unwavering superior R-value, fire resistance and acoustic control for the life of a structure.

Now that we’ve put this myth to rest, what topic should we tackle next?

Don’t Stop at the Surface with Moisture and Mold Damage

1316551358_254450912_4-Residential-and-commercial-Flood-Water-Damage-services-free-est-8888110187-ServicesMold Awareness Month Tip #2: When you see signs of moisture damage either on the exterior or interior you can’t just address this at the surface.  You have to keep digging until you get to dry materials.  If that means tearing out the drywall and the insulation until you get to something dry, so be it. You can’t just fix the surface because it was wet. If you have to replace materials following moisture damage consider using a mold and moisture resistant drywall and a smart vapor retarder with your insulation to add protection to your wall assembly. You will be building in more robustness to an area of your home that is apparently susceptible to moisture intrusion.

That’s from the outside too.  If you find some water damage around your window and you tear it out you can’t stop there.  Take your screwdriver or awl and probe the wood behind it to find out how far the damage goes. If you don’t correct the problem at the source and replace all the damaged materials, the chances of mold occurring in this area are very good..

So, don’t stop at the surface or just treat the symptoms.  You have to exhaust the symptoms and get to the source.

Remember, if you see moisture damage whether inside or outside the building don’t stop digging and probing until you get to dry.

Glass Bottle or Paper Bag?

If you wanted to keep something for 50 years would you keep it is a paper bag or a glass bottle?

This question came from a recent architect training I conducted in New York. I was engaged in a conversation about wall systems and sustainability with this group and the discussion moved to durability in relation to sustainability.

I posed that question and the response was a glass bottle. However, a case can be made for both.

Many of the passive energy saving measures we employ in our buildings can only be accomplished effectively during initial construction.  As an example; it is very difficult to add insulation to side walls over time because the cavity is designed, constructed and closed in.  If you want durability and longevity you better be building something upfront that will last at least 50 years.

To that end, do not employ difficult to replace materials that are not intended to last as long as the wall you are building. If you haven’t figured it out yet we were talking about different types of insulation.

If you can’t see it, inspect it, or fix it, you had better be sure it’s going to be around longer than you are.

Your thoughts are always welcome.

Building Knowledge at AIA 2013 — Expertise that Inspires

LucasAIA13Upon completion of a CEU Course at AIA 2013 on “The Future of Building Materials and Their Impact on How We Build”, Building Scientist Lucas Hamilton was asked the following question:

“What does air tightness have to do with air quality? How does the tightness influence the air inside?  It doesn’t make any sense?”

When the building envelope was leaky, we had three to four times the volume of the building being changed every hour by fresh air from outside — uncontrolled in the building envelope. Now, with tighter buildings we don’t allow that.  So, you have lost all the fresh air you had coming through the walls. That’s why it is so important. That is the influence today.

If you’re at AIA, stop by booth #2108 to continue the discussion with Lucas and our team of Building Knowledge experts. Also, feel free to add your thoughts below — comments and questions are always welcome!

AIA Convention Takes on the Mile-High City

AIA2013Welcome to Denver! The 2013 American Institute of Architects (AIA) Convention is ready to go.  Each year exhibitors look for ways to entice attendees to their booth.  This year, the Saint-Gobain family of businesses – led by CertainTeed — is taking a new approach by bringing technical and building knowledge, and solution-based insights such as indoor environmental quality, acoustics and moisture management to our booth that can have a positive impact on the design of buildings in general.

Over the past year, we have offered accredited building science courses via webinar and our online continuing education platform to builders, designers and architects.  This practice is helping to shape sustainable building.  This year we are bringing some of these courses to the AIA Convention through our Learning Lounge.  To complement this effort, the Saint-Gobain booth (2108) is staffed with technical experts across our companies who can offer building knowledge and systems expertise unequaled in the industry.

You can still talk about products, but our Building Knowledge Bar with our experts can take the conversations to a new level. You can also tweet us questions @certainteed and we can hook you up with the right expert to answer your question.

Although our courses are sold-out, we will be blogging and tweeting questions and observations that are raised in the sessions that could apply to a problem or issue you are facing. Just follow #AIA2013.

We hope to see you over the next few days at booth 2108 to share what new innovations are taking place within the Saint-Gobain family of businesses and to be your premier resource for building knowledge.

A Tip for New Home Buyers – Consider What is Behind the Walls

Hybrid insulation installDuring the 2013 International Builders’ Show I had the chance to speak with a regional manager for a national builder about the challenge of helping consumers understand the features, benefits and return on investment (ROI) on the hidden features in a home. 

When a potential homeowners speaks to a builder they are usually more focused on considering upgrades that are visible to the eye than considering what’s underneath the walls of the home. What they don’t consider is how upgrading the R-value in their walls will save them money on heating and cooling over the life of the home or if they plan on selling the home in the future, how this improved performance may help them compete against homes that will be built between now and then.

The challenge that is faced by a builder as well as a solution provider is to create ways to have that very conversation with the consumer in a clear and relatively quick manner. The reality is that a builder only has so much time with a prospective buyer of a new construction and they do have a great deal of ground to cover.  It is usually easier to focus on what is visible than what is not.

During our chat, we discussed creating scenarios of building a house three different ways to maximize the efficiency of the home and how to show that to a prospective buyer.  You could have partially finished walls in the garage of a model home which show building and insulating a wall to code vs. improved materials and techniques.  You could then show various types of wallboard – yes there are varieties of wallboard that address noise reduction, mold and moisture control and volatile organic compound removal.  This could be a chance for people to actually see and understand what is usually hidden behind the finishes they have been focused on.

Truth is, potential homeowners seem more interested in talking about the aesthetics of countertop materials than increasing the efficiency of their wall systems. Why are we so comfortable being ignorant about one the most important investments of our life? I would bet that more people have researched the features and benefits of their next car in terms of gas mileage, horsepower, etc.  than researching the type of insulation and wallboard to use in their home for optimum comfort and health.

Does anybody have any ideas of how we can engage homeowners in the conversation about the energy efficiency options in homes that will lower their operating costs over the life of a home? If you are a realtor, what do you do?

Take Advantage of the Extended Energy Tax Credits

cit5glamourimagesmallAs you know, at the end of 2012 our Nation averted falling off what was referred to as the “fiscal cliff” by passing last minute budget legislation.  Homeowners and homebuilders became the winners with that vote because one of the provisions was to extend the Energy Tax Credit which was designed to help them upgrade the efficiency of the building envelop and reduce their energy usage.

There were two key components of that action. Congress extended a tax credit for energy efficient retrofits through Dec. 31, 2013 and retroactively to Jan. 1, 2012. The credit allows homeowners to claim 10 percent of the cost of qualified energy-efficient building materials, such as insulation, up to $500. They also revived a business tax credit of up to $2,000.00 for builders that construct or significantly renovate “dwelling units” (e.g. apartments, condos or single-family homes) that meet certain energy efficiency standards.

I strongly recommend that to make the best decisions for improving the energy efficiency of an existing home that you conduct a home energy audit. This is an important first step in identifying where updates are most needed and how to get the greatest return from a renovation budget. ResNet is a great resource that helps connect homeowners with trained auditors in their community. For more information, visit www.resnet.us.

That being said, it is fairly easy to identify one of the greatest sources of energy loss even if you are not handy with energy modeling programs – the attic. Take a look up there. If the tops of the ceiling  joists are visible then you will definitely need to add more insulation to reach the current recommended R-value. This is typical of homes built more than 30 years ago.

ainsulatticblow1webdsmallAccording to the U.S. Department of Energy, the average homeowner can save as much as 30 percent on energy bills related to comfort simply by having the right amount of insulation throughout the home. For attics, applying a premium fiberglass blowing insulation is the best solution for adding thermal performance in an attic and in keeping a home warmer in the winter and cooler during the summer (without concern for compressing what insulation already exists  – a real issue with some other types of loose-fill insulations available). And the best part: it is easy to access and an inexpensive way to achieve great results year round.

There are tools available for homeowners that help recommend R-values for different areas of the home, provide estimates of potential savings, and identifies incentives for completing insulation projects from this federal tax credit down to local utility programs.

The most important thing is that you act now and don’t miss the opportunity to take advantage of the Tax Credits while you can.  This might really be your last chance for a bite of the apple. The reality is older homes will need to be upgraded to remain competitive is the marketplace as newer construction comes online.  It is only a matter of time before energy efficiency labels will be placed on buildings.  Don’t let your single most valuable investment fall behind!

It’s Easy to Lower Energy Bills – Insulate!

BuilderLiveI continue to be amazed at tradeshows how attracted attendees are to photovoltaic (PV) products. It is admittedly an exciting technology and I saw this again at the Greenbuild and the International Builders’ Shows.  At this past IBS show, our Builders’ Resource Center answered many questions on many topics but clearly the most interest was again regarding integrated photovoltaic roofing and PV panels.

I guess what I find so amazing is how much time people will dedicate to evaluating the return on investment (ROI) for PV while remaining so unwilling to spend even a little effort going after low hanging fruit that might not be as exciting or visible. PV can be a good investment for many folks but it could be a great investment if they improved their baseline consumption first.

Insulate, tighten up that ductwork and envelope while ensuring proper fresh air and then the same PV investment can go from providing say 50 percent of your power needs to providing 75 percent. There’s an old African proverb that says: “if you want to go fast go alone but if you want to go far go together.” Nothing could be truer in a situation such as this. Every little effort you make can combine to have an impact greater than the sum of the parts.

Another thing I often hear during trade show discussions about solar is that folks are going to wait a little longer until they get into the PV roofing (they have a new roof they don’t want to disturb just yet, they are waiting for the right client to force their hand, they heard that prices are going to keep dropping as more folks get into it, etc…). I understand. It’s not a small investment and so it should be done with prudence.

But…. adding insulation and improving the building envelope need not wait. Material prices for these types of products are near historic lows and labor is trained, willing, and eager to do the job. You will begin saving money on your energy bill immediately and perhaps your new cash flow properties will actually allow you to get that super sexy solar even sooner.

 

GREEN BUILDING GURU: Drew Brandt, CertainTeed Insulation

Greenbuild 2012 is the perfect venue to capture interesting perspectives on sustainability. We’re highlighting a few noteworthy individuals through our “Green Building Guru” column.

What do you think is the most critical factor in ensuring a healthy, sustainable built environment?

Companies that are developing and manufacturing products for green construction need to fully embrace environmental transparency and provide quality, accurate information to end users. This is the foundation for continuous improvement and innovation in product design that will help us collectively protect and preserve the environment.

What is your business doing to support this goal?

Most recently, we created the “Recycled Truth” website in reaction to the U.S. Green Building Council’s ruling that calls for more stringent parameters for calculating the recycled content of products. In essence, the ruling requires manufacturers to report recycled content on a by product, by plant basis versus a combined national average. At CertainTeed, we’ve always embraced plant-specific analyses and developed the site to help share our experience with other manufacturers, architects, builders, etc.

 

 

In the Green Zone: Modular Construction  

Once again, sustainable modular construction is being featured in the GreenZone area at Greenbuild 2012. For anyone who missed it last year, the GreenZone, which is spearheaded by Building Design + Construction and Professional Builder magazines, made its debut in Toronto with a prototype for a medical facility. This year in San Francisco, there are two structures available for tour: a net-zero, LEED-designed home and an innovative green classroom designed to meet rigorous indoor air quality requirements. Both prototypes mark the convergence of an outstanding project team, including Bogue Trondowski Architects, Method Homes, Portland State University, Blazer Industries, Pacific Construction Services and Oregon Solutions. (And, yes, we’re very proud to have two CertainTeed products — AirRenew Indoor Air Quality Gypsum Board and Sustainable Insulation — included as well!)   If you are at the show, be certain to stop by the GreenZone located just outside of the North Hall.