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6.
The ridge bar is fitted next, but first you must thread the glazing beading into the 2 grooves on the ridge. (Key Point). Lift the
ridge bar up to the apex and standing on a pair of sturdy and safely placed stepladders push the ridge into the small gap
between the roof corners so that the 2 flanges which form the angle of roof are tight up against the inside edge of the corner
bars. The vertical part of the ridge is outside and pointing skywards. Undo the nuts and bolts previously inserted during gable
end assembly and push them upwards into the slotted holes of the ridge. Tighten the nuts.
7.
The roof bars can now be attached to the structure but first you must slide the glazing beading into the bars and trim to suit.
(Key Point).
Attach the bars firstly at the ridge, sliding a bolt into the bolt slot of the roof bars and placing the bolt through the holes in the
flanges of the ridge. Put a nut on and immediately prior to tightening 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. (Key Point)
8.
Now attach the bottom of the roof bars to the eave/gutter bar into the holes in the upper flange. Start with the middle bars
either side of the ridge. You will need to insert extra bolts into each bar that has a vent opening and a cantilever tee-bar
brace.
The 6.3m has 15 Large tee-bar braces – 5 each side and 5 in the roof.
You must remember to insert one extra bolt per cantilever T-bar brace and one per vent per bar. In addition one extra bolt
would be needed on the bar next to the middle where you require the vent to go. If you have purchased a partition with your
greenhouse you will be 2 roof bars short of a full pack. Omit one each side of the ridge at the point where the partition is to be
situated i.e. at the same place where you omitted the side glazing bars.
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 outward bow of the gutters and a slight downward dip of the ridge
.
