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Attic Floor or Roof Deck with Spray Foam

Insulate the Attic Floor or Roof Deck with Spray Foam?

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You know, when it comes to making your home more energy-efficient and comfy, the attic is super important. Having good insulation up there can make a big difference; think lower energy bills and a cozier indoor climate. One of the best ways to insulate is with spray foam insulation. It’s great at sealing air leaks and keeping the temperature just right.

A lot of homeowners find themselves stuck on a big question: should they insulate the attic floor or go for the roof deck? It’s not a straightforward choice, honestly. There are pros and cons to both options, and it’s worth taking a closer look at what each one offers. By the end, you'll have a clearer idea of what’s best for your situation.

Usage guidelines: Spray Foam Insulation Explained  

One of the best types of insulation, not only to be used in new construction but also in existing homes, is spray foam insulation.

Spray foam is made of polyurethane and expands after it has been sprayed, so it creates an airtight seal.

There are two primary types

Open-Cell Spray Foam: Inferior in strength and flexibility but lighter, open-cell foam has a lower R-value per inch but is more effective at blocking sound. It’s breathable, meaning moisture is allowed to pass through.

Spray Foam, Closed Cell: In contrast to open-cell foam, closed-cell foam is denser and more rigid, with a higher R-value per inch and a vapor barrier. It increases structural strength and also has a higher moisture resistance.

Insulating the Attic Floor

Pros: 

Budget Friendly: Attic floor insulation is usually much cheaper than roof deck insulation.

Energy Savings: When you insulate the floor, you are also sealing the living space beneath it, reducing heat loss in the winter and heat gain in the summer.

Simple The process is easy if the attic is unconditioned and it’s used only for storage.

Cons: 

Unfinished Attic Space The attic will still be subject to fluctuations in exterior temperatures, which can have an impact on any HVAC ductwork and other systems located there.

Potential for water or humidity to build up: Moisture buildup can be an issue if your storage area doesn’t have a way to ventilate, and it can cause mold or mildew to develop as well.

Best For: Homes with unused attic space that doesn’t contain HVAC systems or ductwork.

Which Spray Foam Should You Use — and Where? 

A Quick Comparison Guide

The right spray foam insulation depends on the location and purpose for which it is being used for your attic. A breakdown to help you decide:

Attic Floor – Open-Cell Spray Foam Is Best

Best for: Unconditioned attics (storage, no HVAC)

Why Open-Cell? 

  • More affordable than closed cell foam
  • Expands to take the shape of gaps and cracks to form a long-lasting, airtight, and water-resistant seal
  • Features Excellent sound dampening properties
  • Permits partial vapor permeability which helps prevent moisture build-up

Goal: Insulate living space under attic, not the attic.

Attic Ceiling - Closed-Cell Spray Foam Best

Closed- Cell Spray Foam Ideal for: Finished attics

Why Closed-Cell?

Maximum insulation value for fewer racked panels per rack, today and in the future, made possible by a higher R-value per inch.

  • Can be used as a vapor barrier for insulation to save energy.
  • Provides support for the roof
  • Seals in the heat to keep dirt and debris out for more energy savings

Goal: Condition the attic and make it part of your living space.

Decision-Making for Open-Cell vs. Closed-Cell Spray Foam 

Open-Cell Spray Foam:

The highs and lows: Inexpensive, great for soundproofing, and allows for moisture permeability—useful in some climates.

Considerations: A lower R-value per inch and not good for a vapor barrier.

Closed-Cell Spray Foam:

Pros: Higher R-value per inch, doubles as a vapor barrier, adds structural rigidity, and is less susceptible to moisture.

Notes: More costly, requiring professional installation to ensure correct application and safety.

Upon the Addition of Cellulose Attic Insulation 

While spray foam is far more effective for air sealing and insulation, cellulose attic insulation can also be a good solution (if budget constraints are a concern). An eco-friendly material, cellulose is produced from recycled paper products and performs well thermally. But it does not provide the same air-sealing qualities as spray foam, and it can settle over time and lose its effectiveness.

The Most Suitable For Your House 

Whether to insulate the floor of an attic or the roof deck can depend on several factors, including your home’s design, climate, where the heating, ventilation, and air conditioning system is placed, and your budget. Speaking with experts, such as The Green Cocoon, can give you customized advice that suits your particular desires.

Key Takeaways 

Insulated Attic Space: Best for unconditioned attics (attics that do not have an HVAC system present); affordable.

Attic Ceiling Insulation: Ideal for attics that have or will have HVAC equipment, designed as living space; more expensive but frugal in the long run.

Type of Spray Foam: Open-cell if you want to save money and soundproof, closed-cell for a higher R-Value and water resistance.

Once you know all the nuances of each kind of insulation, as well as the materials that are used, you can make an informed decision that will make your home more comfortable, energy efficient, and valuable overall.

Building Resilience: The Role of Insulation in Post-Hurricane or Flood Home Repair

Insulation Tips

As residents of New England, we may not face hurricanes as frequently as our counterparts in the southern U.S., but the impact of intense storms, floods, and coastal surges is not foreign to us. In light of the devastation caused by hurricanes like Harvey, Irma, and Maria, it's crucial for homeowners in our region to also consider the role of insulation in post-hurricane home repair.

Here we’d like to explore the challenges posed by flooding and storm surges, the shortcomings of traditional insulation, and why closed-cell spray foam insulation, a FEMA-recognized flood-resistant material, emerges as a resilient solution.

Understanding the Impact of Hurricanes in New England

While New England is not a hurricane hotspot, we've witnessed the aftermath of intense storms that bring heavy rain, flooding, and potential storm surges along the East Coast. Coastal flooding poses a significant threat to homes, leading to physical deterioration, mold growth, and a host of other issues. According to FEMA, flooding is a major contributor to over $3.5 billion in insurance claims annually, and the risks associated with storm surges and underperforming drainage systems are ever-present.

The Pitfalls of Traditional Insulation

Traditional insulation materials, such as fiberglass and cellulose, excel at insulating homes from seasonal temperature variations but offer little protection against flooding. When floodwaters infiltrate a home, these materials become laden with moisture, rendering them unable to dry out quickly enough to prevent damage. Mold growth becomes a significant concern, posing health risks and complicating the post-hurricane cleanup process. Recognizing these limitations, FEMA emphasizes the importance of flood-resistant building materials in the reconstruction or repair of hurricane-impacted structures.

Closed-Cell Spray Foam: A Flood-Resistant Solution

FEMA identifies closed-cell spray foam insulation as a flood-resistant material falling into Class 4 or Class 5 of its flood damage-resistance classification system. Unlike traditional insulation, closed-cell spray foam quickly becomes rigid, adding structural integrity to roofs and reducing the risk of blowoff during hurricanes. This resilience makes it a valuable asset for homes in areas prone to flooding, hurricanes and heavy storms (like any nor’easter for example) J

Key Features of Closed-Cell Spray Foam Insulation

  1. Structural Integrity: Closed-cell spray foam insulation, like that available from Icynene, enhances a home's structural integrity. This feature becomes crucial during hurricanes, where the rigidity of the insulation helps fortify roofs against the forces of strong winds.
  2. Bulk Water Ingress Resistance: Closed-cell spray foam's ability to reject bulk water ingress is a game-changer in flood-prone areas. Applied in spaces like basements or crawlspaces, it helps reduce the risk of significant damage caused by hurricanes, storms, and their associated floodwaters.
  3. Air-Sealing Qualities: Beyond flood resistance, closed-cell spray foam insulation's air-sealing qualities contribute to long-term benefits. Homeowners can potentially reduce the size of their heating and cooling equipment, leading to energy savings and enhanced comfort throughout the year.

Preparing for the Future: A Resilient Home with Closed-Cell Spray Foam

As we've witnessed an increase in the intensity of hurricanes and heavy storms over the past 30 years, the importance of resilient home construction cannot be overstated. Having a home insulated with closed-cell spray foam insulation is an effective strategy to ensure preparedness for the next hurricane season. By leveraging its flood-resistant properties, structural benefits, and energy efficiency, homeowners can fortify their homes against the challenges posed by intense storms.

In the face of unpredictable weather patterns and the increasing intensity of hurricanes, New England homeowners must prioritize resilience in home construction and repair. Closed-cell spray foam insulation emerges as a FEMA-recognized flood-resistant solution, offering structural integrity, water ingress resistance, and long-term energy efficiency. As we navigate the complexities of our region's climate, investing in closed-cell spray foam insulation becomes a proactive step towards fortifying our homes and ensuring the well-being of our families in the aftermath of intense storms and flooding.

Unwrapping the Benefits: The Green Cocoon’s Comprehensive Guide to Spray Polyurethane Foam Insulation (SPF)

Insulation Tips

Embark on a journey towards unparalleled comfort and sustainability with The Green Cocoon, your trusted environmental comfort specialist. Serving Massachusetts, New Hampshire, and Maine, we've been at the forefront of delivering award-winning, energy-efficient, and eco-friendly insulation solutions. In our commitment to pushing the boundaries of quality and service, one of our standout offerings is Spray Polyurethane Foam (SPF) insulation. In this comprehensive blog, we will explore the remarkable world of SPF insulation, its myriad benefits, and why it stands as a premier choice for homeowners seeking enhanced energy efficiency, comfort, and sustainability.

The Green Cocoon: Elevating Environmental Comfort
Before delving into the specifics of SPF insulation, it's crucial to revisit the ethos of The Green Cocoon. As your go-to source for insulation needs, we take pride in not only providing high-quality products and services but also in redefining the way you experience comfort in your home or business. From spray foam and cellulose to fiberglass, we offer a range of insulation solutions tailored to your comfort needs and the imperative of sustaining a healthy environment. Choosing The Green Cocoon means choosing a warmer or cooler home, a greener Earth, and more green in your wallet.

Spray Polyurethane Foam Insulation: A Closer Look
Spray Polyurethane Foam (SPF) insulation has earned its reputation as a high-performance material, widely recognized for its ability to enhance health, comfort, and energy efficiency in homes and buildings. Now, let's delve into the key aspects that make SPF insulation a standout option.

Benefits of Spray Foam Insulation

  1. All-in-One Solution: SPF serves as a comprehensive solution for thermal, air, vapor, and water vapor transmission through a home's building envelope. Think of it as the perfect ensemble on a windy, damp winter day. While a sweater (fibrous insulation) provides insulation (R-value), SPF insulation goes above and beyond, acting as an air barrier and vapor barrier—all in one product.
  2. Enhanced Energy Efficiency: One of the primary advantages of SPF insulation is its remarkable ability to save homeowners 30% or more on heating and cooling costs. By creating a seamless and airtight barrier, SPF minimizes heat loss in winter and prevents heat gain in summer, resulting in lower energy bills year-round.
  3. Year-Round Comfort: SPF insulation ensures consistent indoor comfort, regardless of external weather conditions. It effectively seals gaps and cracks, preventing drafts and maintaining a stable indoor temperature throughout the changing seasons.
  4. Long-Term Savings: While the upfront cost of SPF insulation may be higher than traditional methods, the long-term savings in energy costs often outweigh the initial investment. Homeowners can enjoy reduced utility bills and a significant return on investment over time.
  5. Durability and Longevity: SPF insulation is renowned for its durability and longevity. Once applied, it adheres to surfaces, forming a robust and seamless barrier. This durability contributes to the insulation's effectiveness over the years, requiring minimal maintenance.

Why Choose Spray Foam?

Beyond the general benefits, SPF insulation offers unique advantages that make it a compelling choice for homeowners. Here's why you should consider Spray Polyurethane Foam:

  1. Save 30% or More on Heating and Cooling Costs: The properties of SPF insulation translate into substantial savings on your energy bills. Experience the financial benefits of a well-insulated home with SPF.
  2. Optimal Temperature Regulation: Keep your home cooler in summer and warmer in winter with SPF insulation. Enjoy a comfortable living environment year-round without the extremes of temperature fluctuations.
  3. Indoor Air Quality Control: SPF acts as a barrier against outdoor pollutants, allergens, and pests, contributing to improved indoor air quality. Breathe easier and enjoy a healthier living space with SPF insulation.
  4. Increased Indoor Comfort: Say goodbye to chilly drafts and uneven temperatures. SPF insulation ensures uniform comfort in all rooms, creating a cozy and welcoming atmosphere for you and your family.
  5. Reduced Pollutants, Allergens & Pests: Enjoy a cleaner, healthier living space with SPF insulation. The material's properties act as a deterrent to pollutants, allergens, and pests, ensuring a more hygienic environment.
  6. Environmental Benefits of SPF Insulation
  7. In addition to the immediate advantages for homeowners, SPF insulation aligns seamlessly with The Green Cocoon's commitment to environmental sustainability:
  8. Reduced Carbon Footprint: The energy efficiency offered by SPF insulation contributes significantly to a lower carbon footprint. By minimizing the need for excessive heating and cooling, homeowners play a vital role in reducing greenhouse gas emissions.
  9. Resource Efficiency: SPF insulation is renowned for its resource efficiency during manufacturing and installation. As a company dedicated to eco-friendly practices, we prioritize materials that have a minimal impact on the environment.
  10. Improved Air Quality: SPF insulation contributes to better indoor air quality by acting as a barrier against outdoor pollutants. This is especially crucial for those with respiratory issues or allergies.

Is Spray Polyurethane Foam right for you?
In the realm of insulation, Spray Polyurethane Foam stands as a superior choice for homeowners seeking optimal comfort, energy efficiency, and sustainability. At The Green Cocoon, we stand by this innovative solution, recognizing its multifaceted benefits and positive impact on both homes and the environment.

Choosing SPF insulation is not just an investment in your home; it's a commitment to a greener, more energy-efficient future. As you consider insulation options, think beyond the immediate and embrace the long-term advantages that SPF insulation can bring to your home, your wallet, and the planet. With The Green Cocoon, you're not just getting wrapped up in insulation; you're embracing a transformative approach to environmental comfort.
Training at The Green Cocoon is important

Insulation Contractor Licensing: None Required?

Insulation Tips

Train Your Employees!

Did you know that the spray foam industry is not regulated and that there are no licensing requirements? Consumers and contractors need to be careful when they hire an insulation company. They should ask, “What are the company’s credentials?” “What certifications and licenses do they have?” Even though it’s not required, companies should have some kind of training program for their employees. Insulation contractor licensing is not required. Why not?

Get Certified

SPFA PCP CertificateAt The Green Cocoon, Senior Spray Foam Division Crew Leader Mike is an SPFA Master Installer (Spray Polyurethane Foam Alliance). That is the third highest level of SPFA insulation certification. Being SPFA certified is a big deal. The SPFA developed its Professional Certification Program (PCP) in 2012. It increases the quality of installations. “The SPFA and industry leaders came together in the Best Practices Risk Management Working Group and recommended the development of a certification program developed by the industry, for the industry.” (sprayfoam.org)

SPFA Training

The SPFA PCP is the only one of its kind for the professional SPF industry. It is the first in the U.S. that is ISO 17024 compliant—standards driven and internationally recognized.

Mike Materkowski, The Green Cocoon, Insulation in Salisbury, Mass. Candace Lord, VP at The Green Cocoon, Insulation in Salisbury, Mass. In February, Mike and VP Candace Lord will receive the final level of training and certification, which is project manager.

There are four levels to the Insulation Certification program:

  • Level 1 – SPF Assistant
  • Level 2 – SPF Insulation Installer
  • Level 3 – SPF Insulation Master Installer
  • Level 4 – SPF Insulation Project Manager

In fact, most of the employees at The Green Cocoon have some sort of third-party certification. This sets us apart from our competition. We don’t just spray foam. Our team gets the job done right the first time because of their training. And, that training is backed by a wealth of knowledge and experience in the industry. Our goal is to reduce the probability of an issue on the job.

In-House Training Program

Similarly, we created our own internal training program. Written by some of our Master Installers, this program is extremely in-depth and structured. Thus, when our team arrives at your home, you can be sure we know what we are doing!

Remember, when you need an insulation company for your next project, make sure to do your homework. And, make sure to ask the right questions! Contact us and we will answer them.
Invest in Insulation with The Green Cocoon

Invest in Insulation

Insulation Tips

One question we always get asked here at The Green Cocoon is, “What is the R.O.I. (return on investment) on insulation?” Consumers want to know if the upfront cost is worth it and more importantly, how long it takes to see the payback. Let’s break this down and find out!

Energy Costs Analyzed

Energy costs vary per state, and since we are located in Massachusetts, we will use that state. The average winter heating bill for oil (most popular) is about $2,343 per year (based on a 1,903 sq. ft. home)[i]. The average yearly electric bill is around $3,516[ii], and much higher in the summer months due to the use of air conditioners.  That comes to a moderate total of $5,859 annually.

The Green Cocoon - Spray Foam Insulation NH

Some of our customers have seen reductions in their heating and cooling bills of up to 75 percent, but for the sake of this example, let’s just say that by insulating your home you save 40 percent. That is a savings of $2,331 per year! If the average insulation job for a medium-sized home is around $8,000 (give or take a few thousand depending on size and material), it would take just under five years to get the return on your investment. After that, you are pocketing an extra $2,331 per year. Think of all of the things you could do with that money! What does that money equal?

What You Can Do With Savings

Here’s what you can do with $2,331:

  1. You can buy almost three months’ worth of groceries for a family of four. This is based on a Massachusetts’ family spending an average of $10,235 per year or $853 per month[iii].
  2. You and your significant other could take a one-week cruise to the southern Caribbean from Boston.
  3. Fill the gas tank in your car for almost one year (depending on car size and miles travelled).
  4. Invest it every year and after 30 years you would have almost $140,000 (based on a 4% return)!

As you can see, insulation is well worth the investment. The question isn’t, “Can I afford it?” The question is, “How can you not?”

If you don’t have the money upfront for insulation, there’s no need to wait to start saving. Ask us about our interest-free financing options.

[i] Commonwealth of Massachusetts (2019). Household Heating Costs. Retrieved from mass.gov.

[ii] Electricity Local (2019). Residential Electricity Rates & Consumption in Massachusetts. Retrieved from electricitylocal.com.

[iii] 24/7 Wall St. (2022). Cost of Living in Massachusetts. Retrieved from 247wallst.com.
Insulate your home with spray foam from The Green Cocoon

Insulate Your Home and Save Money

Insulation Tips

The fall has officially arrived in New England and winter is approaching quickly! With temperatures already slipping below freezing in some areas, the thought of high heating costs is on our minds. Insulate your home and save money. By adding or upgrading your insulation, you can save money on heating costs, thus making your home more energy efficient. By using Efficiency Maine, you can save up to $3,000 by upgrading the insulation in your home!

The Green Cocoon is located just over the border in Massachusetts, but we also service our sister states like Maine. Maine is known for its diverse landscapes, lighthouses, and its delicious bounty from the sea. However, it is also known for its harsh winters. And, that has many homeowners bracing themselves for indoor drafts, cold floors, and hard-to-heat rooms. What if you didn’t have to put up with these home comfort pains this winter?

Why Upgrade My Home’s Insulation?

The Green Cocoon Closed Cell Spray Foam

Many Maine homeowners don’t realize just how effective insulation can be at making their homes more comfortable and efficient. Insulation in key areas like the attic, basement, and exterior walls slows heat transfer into and out of the home. This means that in the winter, that valuable heat you’ve paid for stays inside your home, right where you want it. Cellulose and spray foam insulation are especially effective insulation materials (which is why we install them in homes here in Maine!)

With the right insulation upgrades, you can expect benefits like:

  • Fewer drafts and cold spots
  • Warmer floors
  • Lower annual heating/cooling costs
  • Enhanced overall comfort
  • Greater home energy efficiency
  • Reduced outside noise

When insulation is paired with proper air sealing to eliminate air leaks, the benefits go even further!

Insulate & Save up to $3,800 with Efficiency Maine Rebates

While an insulation upgrade does have an upfront investment, there are valuable local incentives available through Efficiency Maine to offset that cost. As a matter of fact, upgraded insulation helps you save money on your heating bills over time, and insulation has a remarkably short payback period.

Currently, you can receive up to $3,000 on an insulation rebate, $400 on an energy assessment and another $400 when you air seal troubled spots.  The Department of Energy graphic below has a useful cross-section diagram illustrating the most common air leakage spots.

Take Advantage of Efficiency Maine Rebates with The Green Cocoon

As a Residential Registered Vendor with Efficiency Maine, we’re here to help homeowners on the southern coast of Maine save on their next insulation project. In addition to assessing the unique insulation needs of your home, we will help you determine the rebates for which you qualify.

The Green Cocoon would love to help you. We are just a phone call away at (978) 462-0082.
insulation contractor installing foam

Understanding Vapor Barriers

Insulation Tips

Before you start any project, understanding vapor barriers is a must. This ensures that the insulation will be installed correctly. Sadly, that is not always the case.

Many homeowners want to save money, so they install the insulation themselves. Or, they hire licensed  professionals who haven’t been educated on the proper installation techniques. But, the biggest mistake we see is people installing a double vapor barrier—installing a covering (usually plastic) over an already existing vapor barrier.

Understanding vapor barriers

“The function of a vapor barrier is to retard the migration of water vapor. Furthermore, vapor barriers are not typically intended to retard the migration of air. That is the function of air barriers.”[1]

Moreover, a vapor barrier is any material used for damp proofing, typically a plastic or foil sheet. Additionally, these sheets resist diffusion of moisture through the wall, floor, ceiling, or roof assemblies of buildings.[2]

What does a vapor barrier do?

Vapor barriers are installed along, in, or around walls, ceilings, and floors. Of course this is done to prevent moisture from spreading and potentially causing water damage. Additionally, a true vapor barrier is one that completely prevents moisture from passing through its material, as measured by the “moisture vapor transmission rate.” If the material has any porousness, but the barrier still provides protection from moisture, it is called a vapor diffusion retarder.[3] Furthermore, vapor retarders also are commonly referred to simply as vapor barriers. The barrier terminology is less accurate because, in most cases, the products don’t completely barricade the vapor.

What can I use as a vapor barrier?

There are a wide number of materials available to create effective vapor barriers, including:

  • Elastomeric coatings
  • Aluminum foil
  • Paper-backed aluminum
  • Polyethylene plastic sheet
  • Asphalt-coated Kraft paper
  • Metallized film
  • Vapor retarder paints
  • Extruded polystyrene or foil-faced foam board insulation
  • Exterior grade plywood
  • Sheet-type roofing membranes
  • Glass and metal sheets[4]
 

DoubleVaporBarrier

Where do I need a vapor barrier?

The IRC (International Residential Code) divides North America into eight climate areas. This is done for the purposes of determining when a vapor barrier might be needed in a building. Additionally, the IRC recommends builders install a Class-I or -II vapor barrier on the interior side of homes in climate zones 5 and above, and in the Marine 4 zone. However, if you air condition your house in the summer, you might trap condensation in your roof or walls for part of the year. If this is the case, be sure to use a Class-II vapor barrier on the interior of the wall. Moreover, you can use a Class-III vapor barrier on the interior. Pair that with spray foam insulation on the interior of the wall or roof. Furthermore, when building in hot, humid climates (zones 1 to 3), you should not have a vapor barrier on the interior side of the wall.[5]

Major Problem

Incorrect use of vapor barriers is leading to an increase in moisture-related problems. Vapor barriers were originally intended to prevent assemblies from getting wet. However, they often prevent assemblies from drying. In like manor, vapor barriers installed on the interior of assemblies prevent assemblies from drying inward. This can be a problem in any air-conditioned enclosure, below grade space, or a vapor barrier on the exterior. Additionally, a problem can occur where brick is installed over building paper and vapor permeable sheathing.[6]

Building in a Cold Climate While Adhering to Building Codes

Is a vapor barrier required in New England? Yes! Not to mention that as a builder your first step is to consult your local and state building codes. In many colder North American climates, vapor barriers are a required part of building construction.

You may find that vapor barriers are often not required in warmer climates. And, if installed in the wrong climate or on the wrong side of building materials, a vapor barrier can cause more harm than good. By the same token, this circumstance may prevent water vapor from drying, which in turn can cause rot and mold.[7]

If you don’t know the building requirements for your area, ask an expert!

Double Vapor Barrier – Don’t Do It!

What is a double vapor barrier? The insulation in Photo A was installed by an inexperienced insulation installer. Additionally, the brown paper on the fiberglass is a vapor barrier. By putting poly plastic over everything, the installers created a double vapor barrier. Not to mention that this type of installation creates future moisture, mold, and rot problems.  Moreover, in Photo B the cellulose netting is not strapped and it is starting to sag. Furthermore, the staples are ripping out and the ceiling could come down at any time!

DoubleVaporBarrier

DoubleVaporBarrier

In conclusion, if you need insulation, contact us and let us decide what type is best. Let us do the thinking for you!

[1] Building Science (2011). BSD-106: Understanding Vapor Barriers. Retrieved from buildingscience.com.
[2] Wikipedia (2019). Vapor Barrier. Retrieved from en.wikipedia.org.
[3] Energy.gov (2019). Vapor Barriers or Vapor Diffusion Retarders. Retrieved from energy.gov.
[4] Energy.gov. Vapor Barrier
[5] Fine Home Building (2009). How It Works: Vapor Drive. Retrieved from finehomebuilding.com.
[6] Building Science, BSD-106.
[7] IKO Commercial, (2019). An Introduction to Vapour Barriers and Vapour Retarders. Retrieved from iko.com.
Candace covered in cellulose The Green Cocoon Insulation

Why Use an Insulation Expert

Insulation Tips

Why use an insulation expert? Because when insulation isn’t installed correctly things happen!

Apartment complex - The Green Cocoon InsulationThe Green Cocoon received a call from the manager of an apartment complex because they had frozen pipes in the attic. What we discovered was that the insulation was placed incorrectly, and they didn’t add enough of it over the pipes. Consequently, the pipes were freezing.

cellulose-the-green-cocoon-insulation

Difficult location

The pipes were in the far back corner of the very large attic. So our VP Candace was the lucky one who got to walk on a small 2 x 4 catwalk to find the problem. And she did! Just take a look at how dirty she got after crawling around in the cellulose!

Cover your tracks

It is very important to cover your tracks after walking in cellulose insulation. Candace made sure she did just that! If not covered, all of the holes created by her footprints would leave cold spots.

Use an expert

Whether you are building an apartment complex or updating the insulation in your attic, make sure to use an insulation expert. Your wallet will thank you!
vapor-barriers-and-ventilation-the-green-cocoon

Importance of Vapor Barriers and Ventilation

Insulation Tips

Recently, our vice president Candace was asked to take a look at a property and give a quote for insulation. Our sales staff usually videotapes their meetings with clients to help them decide on the best insulation for the job. We wanted to share this video to show you the importance of vapor barriers and ventilation.

vapor-barriers-and-ventilation-the-green-cocoon

Thermal Bridging and Condensation

In the first part of this video, you will see water droplets dripping off the nails that are poking through. Because the nails were put in from the outside on the north facing part of the house where there is not a lot of sunlight, there is thermal bridging. Consequently, any moisture that comes in is hitting the wood and making it wet. But the nails are where the water is condensing. As the water runs down the wall and gets closer to the floor, you can see that there is frost in the soffit. Because heat rises, the soffit is much colder.

Add a Vapor Barrier

Adding ventilation can temporarily solve this problem, but then heat and moisture would be pulled from the house even faster. And, losing heat is not energy-efficient. What should happen is a vapor barrier should be created at the thermal envelope to prevent the moisture from ever getting into the space. The other alternative is to spray foam the roof so the surface of the roof is protected by the foam. And because of its R-value, the surface of the foam will never be cold enough for the moisture to reach a dew point and condense.

At 38 seconds, you will see that on the other side of the house, there is an identical eve space that is significantly warmer. In fact, it is 20 to 30 degrees warmer, and there is no moisture. Consequently, the nail heads don’t show any rust. This is a good example of why vapor barriers and ventilation are important.

Insulation Is Key

Our recent blog about Rockwool insulation being designed for use as exterior continuous insulation is a great read. It will help you understand the importance of vapor barriers and ventilation.

If you have questions about our products, check out the FAQ section of our website. You may find your answers there. If not, contact us!

Watch the video on our YouTube Channel!
The Green Cocoon - Attic Ventilation problem showing mold

Polyurethane Foam Used as a High-Performance Adhesive

Insulation Tips

In the insulation industry, we all know why spray polyurethane foam works so well as an insulation and air barrier for buildings. Most also know that polyurethane is used to make many everyday objects in your automobile and around the house. But, most don’t know that polyurethane foam is used a lot as a high-performance adhesive.

Closed Cell Spray Foam Strongest

If you mix the A and B sides of polyurethane foam together, the curing liquid sticks to everything. This creates a strong bond with most any type of surface. In a foam form, the curing polyurethane adhesive rises to fill small gaps between irregular surfaces. This is closed cell spray foam. It reduces excess waste and energy consumption in buildings by up to 50% while adding strength—R-value (7 per inch).

Used in Construction Industry

This high-performance polyurethane adhesive has found a permanent home in the construction industry. Roofing contractors regularly use polyurethane adhesives to attach various roofing materials to substrates (see SPFA-142).

Polyurethane adhesives are also used to bond gypsum board to framing, especially in manufactured housing applications. Two inches of closed cell spray foam between wall stud framing can provide nearly the same racking strength as a half inch of oriented strand board (OSB) sheathing, according to sprayfoam.com. The same application of closed cell foam below the roof deck, between the rafters and trusses (new construction or retrofit), can increase the wind uplift resistance by a factor of three. It can also provide a secondary water barrier if the roof shingles fail.

The Insurance Institute for Business and Home Safety (IBHS) recognizes the structural benefits of closed cell foam insulation and polyurethane adhesives in their Fortified Construction Standards program.

the green cocoon installs foam insulation in attic

Homeowners Save Money

Understanding all of the benefits of closed cell spray foam is key for homeowners. The knowledge helps them make better decisions regarding insulation choice when building or remodeling their home. Moreover, as we strive to construct more resilient and eco-friendly buildings, we encourage the use of spray foam in most of our projects.

Contact us to find out what spray foam is right for you.
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