NorthSeal

Spray Foam Insulation

The main benefits of Spray Foam Insulation

  1. Saves on energy costs
  2. Reduces the stress on your HVAC system
  3. Makes your home more comfortable
  4. Strengthens your Structure
  5. Will maintain its original shape
  6. Will not sustain flame in a fire
  7. Is not a source of food for Fungus, Insects, or Rodents
  8. Vapor / Water retarder

 

Saving on Your Energy Costs

The US Department of Energy States 40% of your homes energy is lost from air infiltration. Air infiltrates through the many drafts your home has such as wall outlets, doors, window, and other hard to insulate areas. With Spray foam Insulation you can insulate those hard to reach places due to the rapid expansion of the foam.  Having a Sealed Envelope, as they call it, is the best way to save money on your heating and cooling bills.

Your Building Envelope is a total of materials and design components that control the temperature, movement of air and moisture both into and out of the building. By sealing your building some studies show that a person can save up to 40% on their energy bills. After 5 years you could start seeing 30% back on your investment.

 

Reducing the stress on your HVAC system

Having the Sealed Envelope allows you to have a smaller HVAC system because you don’t lose your air as rapidly as you would with fiberglass or cellulose.

The air loss that occurs at your air duct joints can be sealed by applying spray foam directly to the duct work. You see great results if your ductwork runs through a crawl space or and attic. When your crawl space or attic is improperly insulated you are losing substantial amounts energy though convection due to the drastic temperature difference.  Spray foam insulation is your best solution.

 

Makes your home more comfortable

Spray foam has the highest R-Value per inch of insulation.

R-Value: is a measure of resistance to heat flow though a given thickness of material. The higher the R-Value the greater the insulating power. When you install more R-Value in the same amount of space you then achieve a more efficient structure.

By having a sealed envelope you significantly reduce the amount of pollen, pollution, mold, and moisture that can enter your home. This makes the air quality as good if not better than most medical facilities cutting down on allergies and sickness.

 

Strengthen your structure

The walls are the main structural component of your building. Weight from the roof, such as shingles and snow load add weight and force pressure down on the walls forcing them to compress.

Strong winds also impose lateral force to your buildings walls. These forces may distort the walls with what is called “shearing force.” Building codes require that your building walls be designed to withstand these various forces and loads. When walls are built to the bare minimum standard, while safe, movement can occur such as creaking and shaking during those high winds or occupant activity.

High density, closed cell spray foam insulation sprayed to your stud cavities adhere fully to both your exterior sheathing and studs. With this added rigidity there will be less movement in your walls due to high winds or occupant activity.

Spray foam insulation adds to the structural strength of your building. NAHB Research shows spray foam insulated walls could have 75% to 200% more racking strength than a traditionally insulated wall.

Racking Test
Shearing forces on a wall tend to distort the wall from its original shape as a rectangle into a parallelogram. To test a wall’s resistance to the shear forces imposed by wind loading, engineers use a “racking test.” An 8 ft. x 8 ft. model wall is built and placed in a large frame. The base of the wall is secured to the frame and a horizontal (lateral) force is applied at one upper corner. The force is increased in 400 lb. increments until the wall structure fails.

Spray Foam’s affect on wall strength
In a series of racking tests1, walls with and without spray-applied polyurethane foam insulation were compared. Two exterior facing materials were tested:

  1. Vinyl siding over 15-lb. building paper; and
  2. Textured plywood siding.

chart1

All wall panels were faced with ½-inch sheetrock on the interior side and used 16 inch stud spacing. For the stud wall panels that were insulated with spray-applied polyurethane foam, the stud cavities were essentially completely filled with foam of 1.5 lb / ft3 density.

As the graph indicates, stud walls filled with spray-applied polyurethane foam add significant strength to home walls. Furthermore, for each load applied, the foam filled walls deformed less and offered greater resilience.

chart2In a second series of racking tests2, spray-applied polyurethane foam insulation was compared with conventional R-19 glass fiber batts. In one comparison, the wall panels were faced both sides with dry wall. In the other comparison, the wall panels were faced one side with OSB (oriented strand board) with dry wall on the opposite side. In both cases, the wall panels used steel studs spaced 24 inches on center and the average foam density was 2.26 lb / ft3.

Once again, the graph indicates the greater strength of the spray foam insulated wall system.

 

Maintains its original shape

Figure1

The figure to the right show’s in (exaggeration) what happens over time to both Fiberglass and Cellulose Insulation due to the makeupof the materials. Fiberglass insulation is made by melting sand and shards of glass into fibrous strands, and then bonded together by a bonding agent. After time and gravity take its toll on the insulation the fibers start to lose rigidity and compress causing sag.

Cellulose insulation is blown pieces of media such as (wool, newspaper clippings, cotton, and even fiberglass) this creates air voids between the media that resist the conductivity of energy. Again after time and gravity take its toll the media loses its rigidity and start to compress.

Figure2

The second figure shows how spray foam is applied to the wall cavity by chemically bonding to the surface it is being applied to. This creates one monolithic piece of insulation that forms around the studs and obstructions in the wall cavity.

 

Will not sustain flame in a fire

Spray Foam Insulation will be consumed by flame but will not sustain flame upon removal of the flame source. Spray foam insulation will not melt or drip during a fire and has a class 1 fire rating.

 

Is not a source of food for Fungus, Insects, or Rodents

All fungal matter shares the common characteristic of being capable of growth without sunlight. Because of this, molds can be found almost anywhere and can grow on almost anything as long as moisture and oxygen are present.

There is not a feasible way to eliminate all molds and mold spores indoors, so the most effective way to control indoor mold growth is to control moisture. Mold growth frequently occurs when excessive moisture or water accumulates indoors. In buildings where mold is a problem, the mold must be remediated and the sources of moisture eliminated. This is where Spray Foam Insulation can be used very effectively. Used as a primary source of insulation, it seals the cracks, gaps and holes in the building’s structure and sheathing to create a tight space by reducing air and moisture flow from infiltration and exfiltration.

Spray Foam Insulation is not a source of food for Insects, Rodents, or Fungus. Also is not a nesting source for rodents or insects, this then detours both from entering through a cavity with spray foam insulation in it.

Product used

  • Spray Foam Polymers
  • Thermoseal 2000 2lb high density closed cell foam insulation
  • Thermoseal 500 1/2lb light density open cell foam insulation