Reglazing With TwinWall or TripleWall
TwinWall is a significant
improvement for a single-glazed greenhouse.
- Remove old
TwinWall to size using a box knife or a very fine tooth saw blade
new glazing gasket if necessary
panels have one side which must face the sun
protective film from inside face
exposed ends of panels with TwinWall capping
TwinWall panels in place and secure with the same method as the old
immediately remove exterior protective film
store TwinWall in direct sun or film will not
clear sealant where TwinWall tucks into frame or capping.
Adding TwinWall or TripleWall 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
Use End Caps on the top and bottom of TwinWall
or TripleWall 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 TwinWall
or TripleWall 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 TwinWall to 23-3/4″ wide. Cut capping
Building With TwinWall
1/16″ Glazing Tape (#1521) to framework.
Install TwinWall panels on tape. Seal all roof joints between panels. Also seal between panels and
framework with Foilastic Tape (#1532).
1/16″ Glazing Tape to underside of Bar Caps.
Sealant #1520 to underside of Roof Bar Caps
at screw holes. Install Bar Caps.
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