Residential Renovation in RI gets SprayFoam

Traditionally, spring is the busiest time for builders and contractors. It’s a busy time for Greenstamp too. Our crew has been in Middleton, RI applying spray foam insulation into a home renovation project. This winter, the home will be energy efficient and the owners will see a significant reduction in heating costs.

Clarion on Blue Hill Ave Project

Featured Project:

Our team of insulation experts sprayed foam insulation in the exterior walls and installed sound attenuation throughout interior of Clarion on Blue Hill Ave in Boston, MA.

Clarion on Blue Hill Ave

Insulation for a Good Cause

The team at Green Stamp, in partnership with the Home Builders & Remodelers Association of Cape Cod, donated insulation and expertise for a home in Brewster MA. This home was built in one week for a family in need by members and partners of the Habitat of Humanity of Cape Cod.

We are proud to be part of this the mission to “build strength, stability and self-reliance through homeownership.”

Thank you to Robert Scott Button, owner of for the Oscar worthy time-lapse video of our 3rd Home Builders Blitz! The drone footage, hyper-lapse, and great music is amazing. The 15-minute "movie" beautifully represents the professionalism of our members. Thank you Scott! Habitat for Humanity of Cape Cod

Posted by Home Builders & Remodelers Association of Cape Cod on Thursday, September 28, 2017

New Construction – Newton, MA


Greenstamp insulated a custom copper roof for a new home being built in Newton, MA. The Greenstamp experts worked closely with the architects and builders through every phase of the construction project on the roof and the complete insulation system for this new home.

Brae Burn Country Club

Greenstamp  successfully completes the insulation of the Poolside snack bar to help make the chefs and workers as comfortable as the poolside guests!

Our Manufacturers

Greenstamp works with several types of foam on the market. We are certified to spray foam insulation from manufacturers like, Coribond(c), Demilec(c), and Gaco Western Foam Systems. We will evaluate and recommend the best product for your project’s specific need or requirement.

Benefits of Spray Foam Insulation


Spray Foam Insulation

Spray Foam Insulation is a versatile material and proven solution to a variety of construction challenges like:

  • Creating of a complete air barrier
  • Controlling moisture and condensation
  • Stopping rodent and insect intrusion
  • Preventing mold
  • Inhibiting ice formation
  • Eliminating squeaky building components
  • Reducing convective currents in walls or attics
  • Reducing outside noise
  • Adding structural strength

All these benefits translate into:

  • Energy efficiency (a high R-value per inch)
  • Cost-savings, it reduces the cost of installing multiple products to achieve one thing
  • Peace of mind, it keeps unwanted things out


The selection of Open Cell SPF versus Closed Cell SPF depends on the project and what is needed in terms of its performance or specific application requirements.

Open Cell SPF produces cells which do not completely close when applied. Air is allowed to fill the space inside the material. It is often installed in the same way unfaced-fiberglass insulation is used. In terms of cost and R-value, Open Cell SPF is the more efficient use of polyurethane foam. In other words, as an air barrier, it uses minimal material to create maximum affect.

Closed Cell SPF produces tiny cells that are completely closed making it a denser, heavier, and stronger material. Its composition is better for preventing vapor and moisture penetration. It is often used in basements, crawlspaces, unvented cathedral ceilings, wine cellars, and other areas of high moisture potential. Despite the higher R-value, Closed Cell SPF requires more material, is more expensive and has a higher cost per R-value.

Based on our evaluation of your project, Greenstamp will help you determine the best and most cost-effective solution.


What is Spray Foam Insulation

Spray foam insulation is a spray-applied liquid plastic that expands many times its size. It is commonly installed as insulation and air or moisture barriers. Also known as spray polyurethane foam (SPF), spray foam is durable and maintains its physical properties over time. SPF has been used for over 60 years and is an extremely stable, long-lasting and a versatile material.

SPF is also among the ‘greenest’ insulation alternatives, as it requires minimal energy to transport and install. As a single product, depending on the project and formula, SPF can take the place of 3-4 other products like air barriers, sealants, vapor retarders, and weather barriers. Furthermore, studies have found that it does not release toxic gases or leach harmful chemicals into the air or soil.

Proper technical training and specialized equipment is used to apply the spray polyurethane foam in order to get the best results.

Top 10 Reasons to Air Seal Your Home

  1. Return on Investment.  It’s the best investment you’ll ever make.  Air leakage is responsible for up to 40% of your heating loss.  Imagine spending less than a $1000 to have a professional crew come in and, in half a day with no mess, reduce your heating and cooling bills by up to 32% (or 80% of 40%)?
  2. Rebates, rebates, rebates.  If you’re like most of the country, you’ll also get up to $2000 back in government sponsored rebates.  So, it’s not only good business, but it’s basically free.  Imagine investing in the stock market and both getting to physically enjoy your investment and being able to realize an immediate return on your investment.  How often does this happen?
  3. Whole House Comfort.  It will make your home more comfortable.  Drafty windows and doors make for uneven heating throughout the house.  So, you end up with some places that are too hot and others that are too cold.  Imagine your home heated evenly throughout so that you could put your bed right next to your windows.  It’s possible, it really is.
  4. Painless and Immediate.  It’s quick, quiet and clean.  About 80% of air sealing of a home can be done by a team of trained professionals in half a day or less.  You’ll realize the differences immediately.
  5. Noise Reduction.  Air sealing doesn’t only keep cold air out, it also keeps out noise.  So, your house will be more comfortable and quieter.
  6. Improve Indoor Air Quality.  It can also keep out mold and pollen.  So, if you’ve got allergies or are sensitive to mold, your home can finally be a safe haven.
  7. Prevents Ice Dams.  Ice dams are caused by air leakage to the underside of your roof.  This air is heated and melts the snow on top of the roof.  The melted snow then drips down the roof until it refreezes causing those beautiful icicles hanging off the gutter.  While they definitely are pretty, the damage they cause is extremely well known.
  8. Damage Control.  Most frozen pipes could have been prevented with air sealing.  If you’ve ever had a pipe freeze and a pipe break, you understand how valuable that can be.
  9. Pest Control.  Air sealing can also keep out unwanted guests, such as birds, bugs and rodents.
  10. Prevents water damage.  Water will follow the same holes that the air comes in through.  When that water comes in, it often hides in the wall cavities destroying the building materials and acting as a breeding ground for mold and termites.   If you air seal using the right materials, it will stop the air, the water, the mold and the pests.

Top 10 Questions Asked About Spray Foam Insulation (and their answers)


1. What’s the difference between open cell and closed cell spray foam insulation?

Answer: The raw materials of both types of foam are nearly identical.  The main difference between them is how dense they are (or, how much we fluff up the material during the spraying.)

The closed cell foam is the denser formulation of the material.  This change in density affects its physical properties in many positive ways.  However, the open cell is generally the much more affordable choice of the two.  Therefore, whenever there aren’t reasons to disqualify Open Cell foam’s usage, it generally will be the product of choice

2. When do I use open cell vs. closed cell?

Answer: The general rule to follow is that one should treat open cell foam identically to fiberglass or cellulose.  It is an excellent insulator giving the end user a near perfect fit.  In doing so, it also creates a nearly perfect air seal (in contrast to fiberglass or cellulose).  This air seal is responsible for up to 40% of heating and cooling savings of the house.

However, closed cell foam can be used in numerous situations for which there is no other answer.  It is intrinsically structural, a vapor barrier, a drainage plain, an air barrier and, of course, perhaps the highest R-Value per inch available on the market (usually around 7 per inch).

3. Are all spray foam insulations the same?

Answer:  No. There are multiple manufacturers of spray foam. Like with any product, there are some lower-quality spray foam insulation on the market that have been imported from abroad. Be sure to know exactly what you’re getting for the price you’ve been quoted.

4. Can I install spray foam insulation in an unvented roof ceiling?

Answer:  Yes.  However, care and thought should go into determining if closed cell spray foam is necessary when mapping the potential locations for condensation in the wall cavity.

5. Can I install spray foam insulation in an unvented crawl space?

Answer:  Yes.  However, one should only use Closed Cell spray foam.  Open cell spray foam does not deal with dampness well and is an excellent nest for rodents and others.

6. Can I install injection foam insulation into existing cavity walls or other inaccessible spaces?

Answer:  Yes.  Both open cell and closed cell foam is available for injection into inaccessible spaces.  The material is injected as a liquid and then rises to completely fill and insulate the void.  Injection foam is a tool that few builders know about and can be a cost effective solution to numerous retrofit problems.

7. Is the spray foam insulation flammable?

Answer:  Yes.  According to the International Building Code, all Foam Plastic Materials (not just spray foam, but Styrofoam, sound proofing foams, extruded polystyrene, foam boards, etc.) must be considered flammable (no matter what any salesman tries to tell you.)  Different manufacturers’ foams have different flammability.  Currently, there are a number of foams that perform over and above the standards required by the International Building Code.  However, the literature of each manufacturer’s foam should be reviewed before a project commences.

8. Can I install spray foam insulation directly to masonry?

Answer:  Yes.  Only Closed Cell Spray foam may be used directly to masonry.  (Open cell foam will get and stay wet soon after installation.)  A primer is generally not necessary.  However, a dew point/wall condensation analysis should be completed to insure that moisture within the masonry does not free within the masonry itself and cause an untimely degradation of the wall.  Although this is a theoretical possibility, we have never witnessed it on any of our projects.

9. Can I leave spray foam insulation directly exposed to the sun?

Answer:  Yes, with limitations.  Spray foam left directly exposed to the sun and weather will begin to seriously degredate after about 1 year.  However, after a few days, the foam will change colors and begin to yellow.

10. Is spray foam insulation waterproof?

Answer:  Some spray foam insulations are waterproof.  This depends on the density of the foam.  However, open cell foams are definitely not waterproof or water resistant.  Rather, open cell foams can hold a tremendous volume of water.   Lower density closed cell foams are water resistant, but not completely water proof.  However, higher density closed cell foams can be water proof.  Check with your installer or the foam manufacturer for more details.