3.0 Shadecloths, Films

3.1 Descriptions of Physical Properties of ThermoVeil® Shadecloths
Shadecloths shall be woven of .010" or .018" opaque, extruded, vinyl-coated polyester yarn consisting of approximately 79% reinforced vinyl and 21% polyester core yarn .The shadecloth shall be tensioned in the finishing range prior to heat setting to keep the warp ends straight, minimize or eliminate weave distortion, and keep the shadecloth flat. The fabric shall be finished with heat and pressure and be dimensionally stable. The width is the manufactured standard width; custom widths shall be available up 126" (320cm) wide.

3.1.2 Performance
As a “shadecloth, the material shall hang flat without buckling or distortion. The edge, when trimmed, shall hang straight without raveling. The unguided shadeband shall roll true and straight, without shifting sideways more than ± 1/8 in. in either direction due to warp distortion or weave design.

3.1.3 Flame Retardance
Shadecloth shall be certified by an Independent Laboratory to pass the Large or Small Scale Vertical Burn Requirements of the National Fire Protection Association (NFPA), FFA, State of California, and Cities of New York, Boston, Chicago, and

3.1.4 Solar Optical Properties
ThermoVeil® shadecloth shall be offered as standard products. Each pattern and series shall be readily available in at least three varying degrees of density and openness to accommodate the various solar loads on each of the different exposures of a building .The shadecloth shall be woven of the same yarns, have similar weaves, and be color matched by dye lot. MechoShade
Systems, Inc., shall provide independent test data on the solar optical properties of the fabrics and MirroFilms™ in combination with clear and heat-absorbing glass (1/4 in. single glazed and 1 in. insulated glass) and twin-glazed insulated glass. Attached are the required solar optical properties in conjunction with clear, blue-green and bronze glass.

3.1.5 Toxicity
New York State / University of Pittsburgh Toxicity Test LC50 – 22.5 grams.
Note: LC 50 of wood – 19.7g, wool – 6.4g when burning.
The lower the LC 50, the more toxic the material when burning. The higher the LC50, the less toxic when burning.

3.2 Description of Physical Properties of MirroFilm™ Polyester Film, Reflective and/or Tinted (provided by MechoShade Systems, Inc.)
Constructed of a sandwich of two clear or tinted polyester with the inside face deposited with a molecular thickness of aluminum. MirroFilm™ shall be metalized and/or tinted as required. (See sample for specific solar optical properties.) MirroFilm can be used as an independent material or in conjunction with ThermoVeil shadecloth to achieve the desired degree of solar protection and visual transmission.

3.4 DualShade® SnapLoc® Mounting System (See also Hardware Accessories)
DualShade® by MechoShade Systems, Inc., is the patented system for mounting ThermoVeil shadecloth and MirroFilms to the same roller by means of a snap-on fastener. The shadecloth and film shall be separated by a 1/2 in. end separator, which shall create a second stagnant air space between the window and the room air.