GROWSPAN
™
ROLLING PREMIUM HIGH TUNNELS
28
Revision date: 01.01.16
4. Once the cover film is in place and centered on the
frame, begin at the peak of one end rafter and install
the spring into the U-channel to secure the cover.
ATTENTION:
Center the cover film front to back and
side-to-side to ensure that enough cover material is
present to lock into the U-channel.
The excess cover
along each side is rolled up when the roll-up side
assemblies are installed.
The rope can remain in place to temporarily secure
the cover if needed. Remove the ropes as the cover is
secured to the frame.
Photos show installing the spring into the U-channel on
the outside of a frame. The process is the same for the
U-channel attached to the top of the end rafters.
5. Continue adding the spring into the U-channel at the
top of the first end rafter. Ensure that an even amount
of the cover is exposed and maintained along the edge
of the frame as it is attached.
NOTE:
The cover material is cut longer/wider than is
required to cover the frame. For easier installation,
allow approximately 10" to extend past the edge of the
end rafter as the cover is secured in place.
6. Continue down both edges of the first end rafter until
the entire length of the end of the cover film is secured
in place.
7. Stretch the cover to the other end of the building
and repeat the steps to secure the cover film in the
U-channel.
NOTE:
Pull the cover tight as the spring is inserted into
the U-channel.
8. After the cover is stretched end-to-end and secured
using the spring and U-channel, move to one side of
the frame and repeat the steps to anchor the cover film
to the first side.
Begin at one end of the U-channel and work toward the
other. It is also possible to begin at the middle of each
side and work toward each end.
NOTE:
Maintain an even length along the side. The
final stretching of the cover takes place when the last
side is secured.
9. After securing the first side, move to the remaining side
and secure it in place.
IMPORTANT:
DO NOT REMOVE TOO MUCH OF THE
EXCESS COVER MATERIAL AT EACH END.
Some
excess cover film material–the material that extends
beyond the end rafters–should remain in place. If the
film needs stretched in the future, remove the spring
from the U-channel, grasp the excess material, pull the
cover tight, and reinstall the spring.
The excess material along the sides is rolled up in the
roll-up side assembly.
10. Once the cover film is installed and secured in the
U-channel, continue with the
Install the Roll-up Side
Assemblies
procedure.
Roll-up Portion
of the Cover
