Multi-Wall is a significant improvement for a single-glazed greenhouse.
- Order the correct Multi-Wall thickness to fit your
4 mm = 3/16"... 6 mm = 1/4"... 8 mm = 5/16"...10 mm =
3/8"...16 mm = 5/8"
- Remove old glazing
- Cut Multi-Wall 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
- Apply clear sealant where Multi-Wall tucks into frame
POLYCABONATE CAPPING SYSTEMS
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.
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).
Cap is used to connect Multi-Wall along vertical edges (Fig. 2).
Builders 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 (#1538). Also seal between panels and framework with Foilastic
- Install Aluminum
CUTTING MULTI-WALL POLYCARBONATE
4 mm, 6 mm, 8 mm, and 10 mm Polycarbonate
You can cut small amounts with a box knife. Larger jobs should be cut
with a circular saw, table saw or saber saw. In all cases, a fine-tooth
blade is required. (Plywood/finish blade for circular saw / table saw,
and a metal cutting blade for a saber saw.
Box knife: Always draw the knife away from the hand holding the
polycarbonate sheet. A box knife tends to drag and skip, making it dangerous
to use. Draw the knife lightly to start the cut then repeat with more
pressure. When the cut is almost complete, you can flex and snap the pieces
to finish the separation.
Circular saw / saber saw: Clamp a straight-edge to the panel to
guide the saw. Proper cutting speed is important ... Too slow and the
plastic will melt, too fast and you may have large chips.
Table saw: Push through the saw as you would a piece of plywood
Cutting 16 mm polycarbonate: A table saw and circular saw are
the best cutting tools. A saber saw may be useful for cutting holes or
Note: Order the correct Multi-Wall thickness to fit your channel!
4 mm = 3/16"
6 mm = 1/4"
8 mm = 5/16"
10 mm = 3/8"
16 mm = 5/8"