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Upgrade your greenhouse
 
Multi-Wall is a significant improvement for a single-glazed greenhouse.
- Remove old glazing
- Cut TwinWall to size using a box knife or a very fine
tooth saw blade
- Install new glazing gasket if necessary
- Note panels have one side which must face the sun
- Remove protective film from inside face
- Close exposed ends of panels with Multi-Wall capping
- Set Mult-Wall panels in place and secure with the same
method as the old glazing.
- Now immediately remove exterior protective film
- Never store Multi-Wall in direct sun or film will not
release
- Apply clear sealant where Multi-Wall tucks into frame
or capping.
POLYCABONATE CAPPING SYSTEMS
 Adding
Multi-Wall to your wood framework is easier when using these special pieces
to hold the panels in place. The Caps are made of a tough, sunlight resistant
polycarbonate, and are weatherproof and maintenance-free.
Use End
Caps on the top and bottom of Multi-Wall to close the channels.
This keeps out dirt and insects. Also use End Caps on the outside edge
of corner panels (Fig. 1).
The Joiner
Cap is used to connect Multi-Wall along vertical edges (Fig. 2).
Builder’s notes: Drill Caps every 12"
for screws. Design framework 24-1/2" O.C., or plan to rip Multi-Wall
to 23-3/4" wide. Cut capping with hacksaw.
BUILDING WITH MULTI-WALL
- Apply 1/16" Glazing
Tape (#1521) to framework. Install TwinWall panels on tape.
- For roof only: Seal all roof joints between panels with Silicone
Sealant (#1520). Also seal between panels and framework with Foilastic
Tape (#1532).
- Install Aluminum Bar Caps.
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