Don’t Confuse Product R-value with Assembly R-value

Martin Holliday

Martin Holliday

In his Blog, Musings of an Energy Nerd , in the Green Building Advisor Martin Holliday, who has been in the industry for a very long time, revisits an old topic regarding the performance claims of a certain type of insulation that we call bubble wrap. The performance claims are greatly misunderstood by most people due to the ignorance of even semi-professionals to the specifics upon which these claims are based.

The bubble wrap claim of an R-value of 8 is usually based upon its performance in an assembly not as a material by itself. They do not usually describe the assembly in which this rating is achieved when they state that performance. These products have a radiant barrier component to them and if you attend my webinars where we discuss heat flow, air flow and moisture flow – this is one of three modes of heat flow – you know that radiant barriers only work when installed adjacent to an air space. When you look at a project where they say that the product has a R-value of 8 they may have failed to mention that it was installed over spacers over a 2 inch air space when it was tested. You may not have that same scenario in your assembly.

In his article, Martin provides examples of claims that have been proven false. What was insightful to me regarding these claims is that the false claims are being repeated or made by the big box retailers who carry significant weight with consumers and DIYers. This is problematic because claims being made by a large influencer means consumers are being misled and installing a product that they think is an R-8 material when it is really an R-1 material. When their energy bills skyrocket, they are forced to redo the work and pay again to make it right.

The manufacturers have been held accountable for false claims, but who is monitoring or holding accountable, outside of Martin, when false claims or misleading information is being given to consumers at a retailer?

That is one of the reasons that using a professional contractor or installer is money well spent.

The Risks of Poor Acoustics in Healthcare Settings

CTC_Gyptone_Big_Curve_yellow_818x474Longer hospital stays, higher readmission rates, unnecessary medical errors, high stress among staff — these are just a few of the consequences of unwanted noise in healthcare settings. It is estimated that ambient noise levels in healthcare facilities have dramatically increased since 1972. In a UK survey conducted by the National Health Service, 40 percent of hospital patients cited noise was a major annoyance during their stay—outranking other factors such as cleanliness, quality of food, privacy and amount of staff. Additionally, new research indicates that the risk of a heart attack increases when measured noise levels exceed 65 decibels.

The good news? There are solutions. Join me on Wednesday, May 21 at 2 p.m. EST for a one-hour webinar dedicated to improving acoustics in healthcare settings. You can register for free here and earn AIA and USGBC credit.

Specifically, the Ceilings in the Healthcare Segment course will cover:

  • How evidence-based design is driving healthcare facility construction
  • Strategies for optimizing indoor environments for the best patient outcomes
  • The role of sound attenuation in protecting patient privacy
  • LEED® for Healthcare as it relates to ceilings and acoustics
  • Facility Guidelines Institute guidelines for ceilings in healthcare environments

The simple truth is that there is no excuse for poor acoustics in healthcare settings. Solutions for better acoustical control not only exist but are in reach — however, we need to ban together to truly make a difference for patients and hospital staff alike. To that end, we recently launched the “Down with Decibels” campaign and encourage you to join the movement.

 

 

 

Home Remodeling Month: A Time to Shine

Home-Remodeling-Projects-wpckiPinterest, Houzz, Facebook, Twitter — each and every day I see amazing home transformations that delight and inspire. I’m constantly in awe of the skill and craftsmanship behind these remodeling projects. And, while smaller scale projects are suitable for ambitious DIYers, there’s something to be said for hiring a professional remodeler and getting the job done right.

Both the National Association of Home Builders (NAHB) and National Association of the Remodeling Industry (NARI) issue a rally cry during the month of May to recognize the work of professional remodelers and encourage homeowners to tackle a long-awaited renovation or needed repair.

Coined “National Home Remodeling Month,” both NAHB and NARI offer a host of resources to help remodelers shine and boost their bottom line. From logos, to social media posts to press release templates, there’s a myriad of tools that remodelers can use in their local markets. All of these promotional materials offer a unique way for remodelers to sharpen their competitive edge.

Also, this is a great time for remodelers to revisit the annual Cost vs. Value Report published by Hanley Wood and share this valuable information with their customers. The report outlines the remodeling projects that result in the greatest return on investment. For example, here’s a rundown of a few high-ranking projects from the most recent report:

Type of Project Return on Investment
Entry Door Replacement 96.6%
Deck Addition 87.4%
Garage Door Replacement 83.7%
Attic Bedroom 83.4%
Vinyl Siding Replacement 78.2%

Overall, remodelers bring curb appeal, comfort and value to our homes and that’s certainly something to honor and recognize during the month of May. Do you have an interesting remodeling project currently underway? If so, share you story here!

 

Managing the Biggest Building Challenge – Moisture

We have reached the dessert portion of The Art of Building Science webinar series and it is definitely apple pie a la mode because it is jammed packed with information. A large portion of this session is focused on Moisture Management because that is the number one cause of premature service life in our built environment today. It is the one thing that we never, ever find a way to live with.

Moisture management is critical to everywhere we build because we build with water and water surrounds us. I have taken part in mold remediation projects in East Los Angeles so even in drought-ridden California you can experience excessive moisture at times. The only place on the planet that does not have moisture issues ever (at least for a very long time now) is the Atacama Desert in Chile.

Even if you haven’t been able to participate in the earlier sessions, join us Tuesday, May 6 at 5:30 pm EST. Of all the topics we cover in building science, moisture management seems to generate the most questions and the most confusion so it’s always a good time to refresh our memory and augment our knowledge. You can register right here for The Art of Building Science Part III – Moisture Flow. This course is AIA approved for 2 CEUs.

As we continue to see devastating weather systems throughout the US, designing and building to manage moisture is becoming increasingly important. Don’t miss this opportunity to learn more about controlling moisture in the built environment.

Don’t Risk Missing Points in LEED V4

LEEDv4If I put on my promotion hat on for a minute, I urge anyone using LEED to be aware of the transparency reporting changes between LEED 2009 and LEED V4. Both reward transparency points but in LEED 2009 they are found under the pilot libraries but in LEED V4 they are migrated down to materials and resources credits.

Since both programs will be in play until mid- 2015, it is important to know where to properly apply these transparency points from manufacturers that provide transparency documentation.

You can be awarded up to six points for transparency so, believe me, this is not something that you want to walk past these because it can cost you a fortune to make up six points somewhere else.

If you need to know the differences between LEED 2009 and LEED V4, I am running a webinar entitled Understanding LEED 2009 v. LEED Version 4on Tuesday, May 6 at 2:00 pm EST. My webinars are free of charge and qualify for AIA and GBCI credits.

In the spirit of transparency, I will cover the following objectives:

  • Identify key improvements in LEED version 4 compared to LEED 2009. Describe new credits applicable to building products and their requirements
  • Understand the new importance of products with Environmental Product Declarations (EPDs), Health Product Declarations (HPDs), and Extended Producer Responsibility (EPR) programs
  •  Identify products that improve energy performance, acoustics, daylight, waste management, and thermal comfort
  • Explain the importance of selecting low emitting products and materials to meet updated credit requirements

If you build for LEED, you won’t want to miss this session.

Tips for Checking for Mold Following a Wet Winter

Mold-in-basement2

Following this incredibly wet winter, it is a good idea to check to make sure that mold growth is not beginning inside or on your home. You may have noticed that the media has been talking about this on news programs of late.

Mold needs four things to thrive and liquid water is perhaps the most critical as it is the only one we have a chance of controlling. Having liquid water coupled with available oxygen, food and the temperature sweet spot, 41° to 104° F, is the perfect storm for mold growth. Here is what you should do:

  • Inspect your basement for damp walls or cracks where moisture can come in and seal them.
  • Fix plumbing leaks and other water problems as soon as possible. Dry all items completely. 
  • Scrub mold off hard non-porous surfaces with detergent and water, and dry completely.
  • On porous surfaces, in addition to surface cleaning you need to completely dry the material in order to prevent its reappearance. If that can’t be done, you may need to remove the material.
  • Inspect the exterior of your home at ground level. If water is collecting there, divert it away from the foundation.
  • If you find mold, make sure to cover your face and hands to minimize exposure when cleaning the area. It is also important to put a fan in a window and blow air from the room out of the house when you are working around the mold or you may disturb it. If it is a significant area affected or if you begin to feel “allergy type” symptoms when working around mold, call an expert to clean it out.

What humans typically react to are the mold spores which become airborne when it is in its “happy place” with food, water, and a cozy temp or when the mold is physically disturbed.  

We’ve made a lot of changes to how we build in recent years in order to conserve energy and live more sustainably. Many of the things we’ve done to improve our habitat have unfortunately created an ideal environment for mold to thrive. The only chance we have to keep mold from becoming a full-time member of our households is to eliminate the presence of liquid water in or on the materials we use to construct the dwellings.

 

Spray Polyurethane Foam for Building Insulation Webinar

I was just reviewing plans for a YouthBuild USA project that together we will be renovating in Worchester, MA this year and I was struck by the reality that even in a rehab like this, we don’t use the same methods or systems for insulating that we traditionally have used.

Spray foam insulationWhen we insulate new or existing structures today there is no ‘one size fits all’. There is no one material that can be used in all places in a cost conscious manner. To be efficient and effective, we need to combine materials. One product that we reach for to control air leakiness in colder climates is spray foam insulation.

It’s important to understand the properties of spray foam if you are going to use them as part of a combined system to achieve the required performance. Before you choose a spray foam, get familiar with the material and how to combine it with other insulation products so that you can control heat flow without causing other problems.

If you are interested in learning more about spray foam insulations, I am conducting a webinar on this subject on Wednesday, April 23 from 3:00 – 4:00 PM EST. You can register right here. And this course qualifies for CEUs!

You will leave this webinar with the knowledge to:

  • Understand Polyurethanes Background – The History of Spray Foam Insulation -Insulation Applications
  • Compare the Differences of Spray Polyurethane Foam Insulation -Market Trends / Energy Efficiency Demands -SPF Overview -Open Cell / Closed Cell –Properties
  • Review Building Envelope Considerations
  • Distinguish the Differences Between Residential and Commercial Building Applications

Bring your questions – I will be ready!

 

Homeowner Trends: Remodeling is In

Screen shot 2014-04-14 at 3.38.39 PMHouzz indicates that the vast majority of homeowners prefer to remodel their home rather than move. In a webinar hosted by Qualified Remodeler magazine, Liza Housman from Houzz — an online remodeling and design platform —  provided an in-depth look into their annual Houzz & Home study, which included the participation of more than 155,000 homeowners. A few key highlights…

  • 91 percent of homeowners said that reviews and recommendations are a top priority in hiring a contractor. A valuable reminder that customer service should always be top of mind!
  • 5 percent of homeowners spent more than a year researching a remodeling project — a sign that remodelers might need to exercise more patience in closing the deal with some customers.
  • Top remodeling projects included kitchen (31%), bathroom (27%), and patio (22%).
  • The highest-ranking replacement projects involved flooring (26%), window and door (21%) and roofing (15%)
  • For kitchen and bath remodeling, more than 40 percent of projects entailed framing or structural work — which definitely caught our attention since any project that guts to the stud is a great time caulk, seal and insulate in addition to aesthetic improvements.

Overall, the survey uncovered great opportunities for growth potential. Let’s get to work!

The Art of Building Science Part II Webinar

Building Science fans, it’s time for Part II of the three part series on The Art of Building Science.  I hope that if you participated in the discussion last month on Heat Flow that you will join me for the next part of the series which will concentrate on Air Flow. If were not able to attend the first session that is not a problem.  These topics work collectively and individually.

The webinar will take place on Tuesday, April 8 from 5:30 – 7:00 pm EST to accommodate attendees who cannot participate during regular business hours.

I like to think of this as the second course of a three course meal. The webinar will run for 90 minutes so that we can consume the entrée part of this three course meal which is packed with valuable information and insight. We can’t eat the dessert until we finish the entrée.

Part II features a more in depth discussion on Air Flow and will provide you a deeper understanding of building science.  This session is approved for 1.5 AIA CEUs.

Register now, right here for The Art of Building Science Part II – Air Flow.

I look forward to continuing the dialogue on The Art of Building Science.

Understanding and Improving Indoor Air Quality Webinar

We, as a society, spend 90 percent of our time indoors. It is extremely important that the air inside our buildings, both residential and commercial, is providing the healthiest environment possible.

I will be hosting a webinar on Tuesday, April 8 from 3:00 – 4:00 pm EST on the topic of Understanding and Improving Air Quality.

This is a newly accredited program for us taking a deeper dive into the topic which is touched upon in other webinars that we have offer.  It is a more focused discussion on how to improve indoor air quality. 

We have talked about this topic and provided education on what indoor air quality is but this program will identify actual steps that can be taken to improve the quality of indoor air.

Let’s get together – inside – and explore the ways to improve our indoor air.  You can sign up right here for the webinar Understanding and Improving Indoor Air Quality (IAQ) – (GBCI Approved).

Come with questions and try to stump the presenter!