9
Main Building With Extension Assembly
6. You now need to have the rear gable in place (remember the rear gable has to go the right way
around). Once the rear gable is in place the extension ridge can be attached (Image H). Fit this in
exactly the same way as the main building’s ridge, making sure the ridge sits on top of the ridge
extension bracket. Remember it is easier to attach 10mm bolts to all the holes before you fix the
ridge in place.
7. You now need to attach the extension sides. Simply attach the gutters and sills to the extension
brackets using 10mm bolts (Image I). Stand on the inside of the greenhouse with the gutter facing
away from you, insert the gutter bar into the gap between the corner bars so that the inside flanges
which form the angle of roof and side line up with the bolts in the corner bars. Loosen the nuts
holding the 2 bolts previously inserted into the corner bars and slide them into the slotted holes in
the flanges of the gutter, then tighten. Repeat this with the bottom bolt and attach to the side sill.
Repeat on the other corner.
You will see that the holes are in pairs. When you are building the right hand side assembly you use
all the right hand holes in the pairs. So when you build the left hand side assembly you will use all
the left hand holes in the pairs.
8. The roof bars can now be attached to the structure. Attach the bars first at the ridge, prior to tight-
ening ensure that the roof bar is pushed up hard against the ridge. Do not attach the bottom of the
bars to the eave until all the roof bars are bolted to the ridge.
Very Important: Bolts will need to be slid into each roof bar for the ridge brace and another for the
longitudinal brace (716). One more bolt is needed to attach the eave bracing between the roof and
the side. Please note: At this stage you will need to insert an extra bolt into each bar either side of a
vent opening. If you haven’t already done so you need to decide now where your roof vents are
going to be positioned so that you can work out the number of bolts in each bar.
9. Now attach the bottom of the roof bars to the gutter bar using a 10mm bolt. Slot the bolt into the
holes in the upper flange (Diagram J-3). Start with the middle bars either side of the ridge.
10. Before tightening the nuts that hold the roof bar to the eave you must ensure that the roof bar is
tight up against the small flange immediately above the gutter (key point). Failure to observe this
point and the previous one of keeping the roof bar tight up to the ridge could result in a slight out-
ward bow of the gutters and a downward dip in the ridge.
11. You can now attach the braces (751) which bolt into the apex of the roof. Use the top bolt out of
those you have slid into each roof bar (Diagram J-1). Next you can attach the eave braces (753)
between the roof and the sides using the bottom bolt in your roof bar channels and the extra bolt
you slid into the side sections earlier on (Diagram J-3). The remaining bolt in the roof bar is used
to attach the vent shut rail (521, 521-1, 521-2 in your greenhouse manual) in your predetermined
locations (note: the shut rails should be attached after the greenhouse has been glazed). For vent
installation refer to your main Titan 9xx manual.
12. Once the frame has been constructed you can return to the Titan 912 / 914 instruction book and
continue with the assembly.
