Slide 2 Slide 3 Slide 4 Commonly referred to as OSB Engineered
wood product consisting of strips of wood arranged in crisscrossing
layers, pressed and bound with an adhesive and made into panels
Slide 5 Slide 6 Invented in 1949 by Armin Elmendorf Introduced as
an alternative to traditional wood products because of wood
shortages during World War II. Patented by Elmendorf in 1965
Waferboard appeared in markets in the early 1970s The OSB industry
evolved from the waferboard industry in the late 1970's as
technology and investors embraced the concept. Waferboard consisted
of randomly placed wood flakes OSB consists of specifically
oriented wood strands Slide 7 In 1980 North America produced 751
million square feet of OSB panel By 1990 the number had risen to
7.6 billion square feet Mid 1990s OSB Began to rival traditional
plywood in production and sales in the panel market In 2001 OSB
surpassed plywood in production and sales By 2005 OSB accounted for
more then 60% of the panel market with 25 billion square feet
produced Slide 8 Slide 9 The timber used in OSB production comes
primarily from young growth forests. This gives OSB manufacturers
an advantage of using smaller timber that can be grown in a shorter
period of time; making OSB more sustainable than other building
products. Slide 10 After harvest, whole logs are hauled to the
mill's wood yard, then sorted. Slide 11 Logs are soaked to loosen
bark and remove frost (where applicable) to prepare wood for
debarking and stranding. Slide 12 Logs are run through the debarker
to remove bark. Bark is later used as fuel in the mill's energy
supply. Soderhamn Eriksson Debarking Machine Slide 13 The strands
are cut from whole logs into precise dimensions of up to six inches
long. Slide 14 Strands are deposited into wet bins and allowed to
soak. They are then removed and placed in dryers until the
appropriate moisture content is reached. Slide 15 Strands are
blended with resin binders and a small amount of wax, which
improves the efficiency of the resin binder and enhances the
panel's resistance to moisture and water absorption. Strands go
through the forming line where cross- directional layers are
formed. Slide 16 Slide 17 Layers of cross-directional strands are
pressed under intense heat and pressure to form a rigid, dense
structural panels. Slide 18 Slide 19 Panels are cooled, grade
stamped, stacked in bundles and edge coated. All graded panels bear
a mandatory certification agency stamp. Slide 20 Slide 21 Slide 22
Walls - excellent strength and rigidity under all types of siding.
Roof Panels - uniformly sound and extra rigid to handle snow and
wind loads. Slide 23 Subfloors - strong, rigid and impact-resistant
for underlayment, carpet or tile. Single-Layer Floors - great for
use directly under carpet, light- weight concrete or hardwood
flooring. Underlayment - uniformly thin, yet strong and finely
sanded, OSB provides a smooth base for vinyl or tile. Slide 24
Structural Insulated Panels - OSB foam-core panels offer high
strength, R-value, and easy installation. Slide 25 Rimboards - OSB
rimboards add strength and rigidity to the floor system. Floor
Joists - OSB I-joists provide a high-quality support system. Slide
26 Slide 27 Price OSB can be $3 to $5 a panel less expensive than
plywood. For a typical 2400 square foot home, OSB will save about
$700 if used as the subfloor, sheathing, and roof decking instead
of plywood. Engineered for Applications and Strength The strands
can be cut to different lengths, oriented in different directions
and assembled with various amounts of adhesives for customized
purposes. Recognized as a Structural Panel in the Model Codes OSB
is recognized as an equivalent to plywood in all North American
model codes for structural sheathing applications in dry service
conditions. Wide Availability and Size-Variety OSB provides wood
products in dimensions that other structural panels do not offer,
including panels from 4 feet by 8 feet to 8 feet by 24 feet in many
thicknesses for multiple span ratings. Slide 28 High Consistency
Because its quality is not dependent on the size of harvested
trees, but on a manufacturing method, each OSB panel can be
manufactured with the same uniformity and consistency.
Environmentally Advantageous OSB is processed mainly from
fast-growing small diameter trees, avoiding the need to log
old-growth timber. OSB is a resource- efficient product, maximizing
yields from a fast-growing renewable resource. Slide 29 Slide
30
