19
Stewart Filmscreen – AT 1.5
THIS SCREEN SEEMS TOO SMALL
While the screen may seem too small for the frame, rest assured that it will fit
.
Grommeted screens
manufactured by Stewart are unique in several ways
.
Stewart uses a proprietary process that allows
seamless construction of all vinyl screen materials: front and rear projection, perforated and non-perf
screens. The Stewart process provides the flattest, most uniform surface possible
.
The final step in
achieving this surface occurs during installation when the fabric is gently pulled into its final, specified
dimension. This is accomplished by means of the shock cord and “S” hook framing system.
DON’T WORRY
It is normal and expected that a Stewart tension and grommet suspended screen appears to be too
small for the frame as the screen is unrolled
.
A rule of thumb is that for every 10 feet or 3 m of vertical
height, approximately 8” or 20 cm of “stretch” is engineered into the fabric
.
Do not worry; this is
exactly as planned
.
RED GROMMET AND HOOK AT EACH CENTER LINE
Stewart puts a red grommet at the centerline of each side of the fabric
.
The grommet spacing is 4” or
10 cm center to center
.
While installing the fabric, you may find that you’ve hit the red grommet
exactly, or you may be off a grommet
.
If the layout is off a grommet, continue to hang the top, then go
back and do a hook for hook exchange across the top
.
The remainder of the fabric will be fine
“unhooked” for as long as this takes.
When the top binding of the screen is entirely
suspended and centered in the frame, the fabric
should be “necking” in toward the center from
each edge, and significantly raised above the
bottom frame member (see Figure 13).
As you lace down the sides, the shock cord
lacing system will easily come out and meet the
screen edge and the screen fabric will quickly
elongate to a perfectly planar surface.
LACING THE BOTTOM
For large scale screens that are more than 15 feet or 4
.
5 m in height, it may be helpful to hook every
third “S” hook across the bottom, initially, then after a few minutes, start again at the centerline, and
begin hooking all the “S” hooks. This stretching process may take up to one hour, but not more.
It is desirable that the installation site’s room temperature be somewhere between 60 to 78
degrees Fahrenheit, 15.5 to 25.5 degrees Celsius.
Figure 13. Top of Screen Laced, Showing the
“Necking” on the Sides of the Screen.
