Spray Foam Insulation:
       The spray version of foam insulation can be more expensive the day you install it than 'batt
and roll' or 'blown-in' insulation, but it provides a better solution due to its ease of reaching all the
hard spots to insulate while providing the superior insulating properties that only foam can
provide. The net result in every case is the home buyer gets a home that costs him less money
starting the day they move in. This is noticeable when they calculate the energy savings minus
the additional mortgage cost leaves more money in their pocket had they built like their
neighbors homes that used batt and roll; or blown in insulation.
       The foam itself is self adhering polyurethane that is mixed with water and sprayed out of a
pneumatic pump. The closed cell foam conforms to any shape of space and cures very quickly.
       The foam expands to fill spaces and seal gaps and cracks, acting as a vapor barrier. As a
result, the insulation provides more effective insulation and air sealing; than many other forms of
insulation. Spray foam insulation is impervious to water, insects and vermin. Some forms of foam
insulation are also extremely fire resistant. Environmentally Friendly Spray foam is also a very
efficient and environmentally friendly way to insulate a home. New technology has brought about
foam that is not only recyclable but manufactured from recycled products. Foam insulation can
also be used in any home, in any space even the smallest corner or highest peak because of its
physical properties, making it an extremely resourceful form of insulation.

Engineer only recommends Spray Foam for roofs:
Based on 10+ years of monitoring energy saving ecologically minded homes it is determined.
    1. There is no better method of insulating your roof than by spraying foam on the underside
    of your roof plywood down to the tops of the walls creating a sealed attic (conditioned attic)
    (non-vented attic without soffit vents). You do not need to place insulation of any kind in the
    ceiling above the rooms for energy efficiency.
    2. The testing for the U.S. Department of Energy by the Oak Ridge National Laboratory
    (ORNL) has been confirmed; the method of building walls that save the most energy is what
    they explain as C-I-C. C-I-C stands for Concrete -Insulation in the Middle Concrete, resulting
    in a wall that has Concrete in good contact with the interior.
    3. The home building envelope should be constructed as follows:
    a.        Concrete walls separating the conditioned area from the weather should be
    walls that are the C-I-C method of construction
    b.        Roofs have to have spray foam under the plywood of the roof sheeting down to
    the top of the C-I-C walls.
       Go to home page:   www.AllWallSystem.com
All Wall System
The most Energy Saving type of
ICF - Insulated Concrete Form
per Dept. of Energy testing in 2001, the C-I-C method.
Spray Foam Insulation - Information