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Spray Foam Insulation. WEATHERIZATION INSTALLER/TECHNICIAN FUNDAMENTALS. WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012. Learning Objectives. SPRAY FOAM INSULATION. By attending this session, participants will be able to:

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spray foam insulation

Spray Foam Insulation

WEATHERIZATION INSTALLER/TECHNICIAN FUNDAMENTALS

WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – July 2012

learning objectives
Learning Objectives

SPRAY FOAM INSULATION

By attending this session, participants will be able to:

  • Describe the use of spray foam in weatherization.
  • Identify foam product options and uses.
  • Explain the advantages and limitations ofdifferent spray foam products.
  • Recognize the need for proper ventilation and personal protective equipment.
classic attic air leaks
Classic Attic Air Leaks

SPRAY FOAM INSULATION

Photo courtesy of the US Department of Energy

How do we fix them?

about spray foam
About Spray Foam

SPRAY FOAM INSULATION

Spray foam insulation is modified polyurethane foam plastic.

  • It is used primarily to seal air leaks in building cavities.
  • It may be used to insulate vertical or horizontal surfaces.
    • Knee walls
    • Under floors
    • Attic hatches
  • Due to fire rating, it may not be left exposed in living areas.
product options
Product Options

SPRAY FOAM INSULATION

Available in a variety of shapes, sizes and uses

Froth-Pak, Dow Chemicals

http://building.dow.com/na/en/products/sealants/index.htm

product options1
Product Options

SPRAY FOAM INSULATION

Available in one-part and two-part formulas

  • One-part:
  • Spray cans (e.g., Great Stuff)
  • Spray guns with screw-on cans
  • Two-part:
  • Portable 2-tank kits – small, medium, and large
  • Truck-mounted rigs
one part spray foam options
One-Part Spray Foam Options

SPRAY FOAM INSULATION

Non-adjustablecanisters

Adjustablegun-type applicators

air sealing with one part foam
Air Sealing with One-Part Foam

SPRAY FOAM INSULATION

Photo courtesy of the US Department of Energy

one part foam advantages and disadvantages
One-Part Foam: Advantages and Disadvantages

SPRAY FOAM INSULATION

  • One-Part Foam
  • ADVANTAGES
  • Quick and easy for small holes and gaps.
  • Creates an effective seal for small holes.
  • Lightweight and portable.
  • DISADVANTAGES
  • Set up time can exceed 2 hours.
  • Not cost effective for large jobs.
  • Freshly gunned product will not adhere on overhead surfaces.
two part foam kits
Two-Part Foam Kits

SPRAY FOAM INSULATION

Photo courtesy of Dow Chemicals

two part foam kits1
Two-Part Foam Kits

SPRAY FOAM INSULATION

Photo courtesy of the US Department of Energy

truck mounted two part foam systems
Truck Mounted Two-Part Foam Systems

SPRAY FOAM INSULATION

Photo courtesy of the US Department of Energy

slide13

Sealing with Two-Part Foam

SPRAY FOAM INSULATION

Photo courtesy of the US Department of Energy

slide14

Sealing with Two-Part Foam

SPRAY FOAM INSULATION

Photo courtesy of the US Department of Energy

slide15

Sealing with Two-Part Foam

SPRAY FOAM INSULATION

Photo courtesy of the US Department of Energy

foaming attic stud bays
Foaming Attic Stud Bays

SPRAY FOAM INSULATION

1

2

3

Photos courtesy of the US Department of Energy

foaming attic bypasses
Foaming Attic Bypasses

SPRAY FOAM INSULATION

Photo courtesy of the US Department of Energy

foaming band joists
Foaming Band Joists

SPRAY FOAM INSULATION

Photo courtesy of the US Department of Energy

slide19

Insulating with Two-Part Foam

SPRAY FOAM INSULATION

Photo courtesy of the US Department of Energy

slide20

Knee Wall Prop

SPRAY FOAM INSULATION

Knee wall prop used to practice the correct application of spray foam.

Spray foam can be used to air seal and insulate the kneewall...

…or just air seal the floor-joist cavities after they have been stuffed with batt insulation.

Photo courtesy of the US Department of Energy

basement wall
Basement Wall

SPRAY FOAM INSULATION

Photo courtesy of INCAP

two part foam advantages and disadvantages
Two-Part Foam: Advantages and Disadvantages

SPRAY FOAM INSULATION

  • Two-Part Foam
  • ADVANTAGES
    • More thorough sealing
    • Significantly reduced labor costs
    • Motivates workers
    • Good adhesion
    • Quick cure time
  • DISADVANTAGES
  • Expensive; hazardous materials shipping fees
  • Easy to waste material
  • Restrictive dispensing temperatures(around 75˚F recommended)
  • Specialized and expensive personal protection equipment required
safe use of spray foam insulation
Safe Use of Spray Foam Insulation

SPRAY FOAM INSULATION

Material Safety Data Sheet (MSDS)

  • Must have MSDS at job site whenever spray foam is used
    • For following precautions for safe handling and use
    • References emergency and first aid procedures

Use in well-ventilated area

  • Ventilation fans exhaust fumes and ensure cross-flow of fresh air

Wear personal protection equipment

  • Coveralls, rubber/latex gloves, eye protection
respiratory protection
Respiratory Protection

SPRAY FOAM INSULATION

  • MSDS sheets state:
  • Atmospheric levels may not exceed exposure guideline
  • Use approved positive-pressure, supplied-air respirators

Photo courtesy of the US Department of Energy

respirators
Respirators

SPRAY FOAM INSULATION

  • Positive-Pressure, Supplied-Air Respirators
  • Designated air compressor should be located in an area with access to fresh air.

Photo courtesy of the US Department of Energy

respirators1
Respirators

SPRAY FOAM INSULATION

Positive-Pressure, Supplied-Air Respirators

Hood

Mask

  • Air hoses connecting mask/hood to air compressor can be cumbersome.
  • Equipment costs can run up to $1,000.
summary
Summary

SPRAY FOAM INSULATION

  • Spray foam is used primarily to air seal.
  • Spray foam can be used to insulate crawl spaces and knee walls.
  • One-part spray foam is used for small jobs, too expensive for big jobs.
  • Two-part spray foam adheres to vertical and overhead horizontal surfaces.
  • Available in large kits and truck mounted systems for big jobs.
  • Proper ventilation and respirator equipment protects workers from harmful off-gases.
  • Foam cannot be left exposed in living areas.