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BOX GUTTER SUPPORT
165mm box gutters
These are supplied loose and MUST BE FITTED – they are a structural requirement of the
roof. The straps must be installed within 75mm of glazing bar centres ( when measured
from centre of the strap to the centre of the bar). To install these straps, simply `nip up`
as shown.
265mm/special box gutters
Straps are factory welded into position.
BOX GUTTER STRAP
These are available for 165/265 box gutters.
To install, notch out the insulation to ensure metal to metal contact between the extruded
box gutter and gallows bracket. Offer up the gallows bracket and mark it ready to drill –
always try to line up with the centre of a brick rather than a mortar joint. Drill the gallows
bracket ( the positions should be similar to the ones shown). Three masonry anchors
should be used that are appropriate to the substrate.
Finally, notch out the undercladding, offer it into position and clip in.
Maximum centres are 2300mm. If the roof has a tie bar installed or a joint within the
box gutter, then a gallows bracket should be installed directly underneath it.
GALLOWS BRACKET
SECTION 8
165mm box gutters
If these have been specified by your company at the time of order they are supplied loose
and must be fitted.
The structural requirement for the hanging brackets are 2 x hanging brackets (sat
side by side) at a maximum span of 2300mm unless the roof has a tie bar or joint on
the boxgutter which should then be positioned in the same area.
Drill through the head of the hanger into the centre of the masonry, avoiding the mortar
joint if possible. Use a masonry anchor suitable for the substrate. Lead flashing should be
dressed down over the hanger, and snipped around the sloped leg. To attach it to the box
gutter, simply ‘nip up’ as shown.
265mm box gutters
Hanger not avaialble.
BOX GUTTER HANGER
RAISED BACK BOX GUTTERS
SECTION 8
Offer the raised back or special box
gutter into position. Carefully mark onto
the aluminium leg against the host wall
the position of each fixing – use 600mm
maximum centres.
1
Lift the box gutter down to the ground and
turn it around. Drill through the aluminium
leg (that abuts the host wall) at the pre-
marked positions. Whilst the box gutter is
on the ground, seal along the front/rear face
where the deep skirt sits inside the head of
the extruded box gutter. (Highlighted in red)
2
Lift the box gutter back into position, check
levels, and then mark the wall (through the
pre-drilled holes) ready to drill the host wall
and grind out for the flashing.
3
Summary of Contents for Classic roof
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