Construction Tips

Construction Tips

Greenhouse Growing Tips

Great greenhouse tips and useful information to
keep your greenhouse running efficiently.




Construction Tips – Page 2


Reglazing With TwinWall or TripleWall

your greenhouse

TwinWall is a significant
improvement for a single-glazed greenhouse.

  • Remove old
  • 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 TwinWall capping
  • Set
    TwinWall panels in place and secure with the same method as the old
  • Now
    immediately remove exterior protective film
  • Never
    store TwinWall in direct sun or film will not
  • Apply
    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
and maintenance-free.

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
with hacksaw.





Building With TwinWall

  1. Apply
    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).
  2. Apply
    1/16″ Glazing Tape to underside of Bar Caps.
  3. Apply
    Sealant #1520 to underside of Roof Bar Caps
    at screw holes. Install Bar Caps.
  4. Seal
    screw heads.





Free Garden Catalog


Leave a Reply

Your email address will not be published. Required fields are marked *


This site uses Akismet to reduce spam. Learn how your comment data is processed.