2.75m Downpipe 68mm Brown
Freeflow is a range of innovative, high quality PVC-U rainwater systems that are the result of Freefoam’s culture of continuous innovation and investment in research and development. The Freeflow range has been designed to ensure both reliable, leak-free performance and quick installation. In addition, it is compatible with other rainwater systems with a range of adaptors. Freeflow products come in a range of standard colours including white, black and brown.
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Freeflow® rainwater systems, of square, half round, ogee or deep design, may be
installed using the steps outlined below. It is important that you refer to the
design guidelines outlined at the end of this installation guide prior to
beginning your installation project. The design guidelines, exploded view
drawings and product lists in this brochure will assist you in selecting the
correct type and quantity of products required.
Fitting Gutter
- It is important to ensure gutters are
fitted as high as possible to the roof edge and the roof edge should not
project beyond the centre of the gutter cross section. Gutters can be fitted
either level or with a slight fall. Laying the gutter with a fall will
increase the flow capacity and increase the area of the roof that can be
drained. Silting will also be reduced with a gutter installed with a slight
fall.
- Fix the gutter outlet to the fascia with
Size 6 (minimum) roundhead screws* vertically above the gully from which the
rainwater will be conveyed to the drainage system. Use a string-line to
ensure a straight gutter, whether level or laid to a fall. Double check the
desired fall is achieved, adjust as necessary. Mark out the position of
every support point along this line.
- Fix fascia brackets to the fascia along the
line created above with Size 6 (minimum) roundhead screws* at maximum
intervals of 1m. A fascia bracket should be fitted within 150mm of all
stopends and angles.
- The fitting of a union bracket is required
at each junction of two gutter sections. Fit a stopend to complete the run.
Union brackets should be fixed to the fascia with Size 6 (minimum) roundhead
screws*. Unions should never be allowed to ‘float’ without fixing.
- Starting at the gutter outlet insert the
back edge of the gutter under the retaining lip of the fascia brackets. Then
press down on the gutter to snap the front of the gutter in place. Fit
additional gutter lengths and gutter lengths cut to size as required. When
measuring gutters to be fitted, ensure that the gutter will extend to the
marks on the fittings. Fittings are marked to indicate the position to which
the gutter should be inserted to allow for thermal expansion.
- All rainwater gutters and pipes must be
squarely cut and all burrs removed. It is recommended that a fine toothed
saw be used. Care must be taken when cutting gutters and pipes in cold or
damp conditions.
NOTE: In areas subject to high winds,
extra securing of brackets may be required. Any extra screws deemed
advisable should only be secured through holes drilled with the necessary
clearance.
Fitting Downpipe
- Fixing of the downpipe starts at the gutter
outlet. An offset is generally required to join the gutter outlet or
downpipe from the outlet to the downpipe on the wall. Offsets can be
constructed from the range of Freeflow bends depending upon the roof
overhang. All offsets should be supported directly beneath the lower offset
bend by a pipe clip. Remember to allow for thermal expansion as described
below.
- Insert a length of square or round downpipe
as preferred into the bottom of the offset bend and fix a pipe clip to the
wall with Size 6 (minimum) roundhead screws*. Ensure that a gap of 10mm is
left at the top of the downpipe for thermal expansion. Fix additional pipe
clips as required at maximum intervals of 2m. If the downpipe is subject to
impact, extra clips should be considered. Two different pipe clip fittings
are available, a flush fitting and where a gap is preferable between wall
and pipe, a stand off clip.
- Additional lengths of downpipe may be
required to reach the ground depending on the height of the building. In
this case, fix a socket to the wall with a pipe clip and Size 6 (minimum)
roundhead screws* at the bottom of the existing fitted downpipe and fix
another length of downpipe to the wall as outlined above. Ensure that a gap
of 10mm is left at the top of additional downpipes for thermal expansion.
- When all downpipes have been fixed in
place, connection to the drainage system can be achieved either by
terminating the downpipe with a rainwater shoe for disposal either into a
drain or hopper or directly into the underground drainage pipe using a
rainwater pipe adaptor. The shoe or adaptor will take the rainwater from the
downpipe to the drain thus reducing the possibility of surface water
accumulating on the ground.
Notes:
- *All screws should be non-corroding,
zinc-plated, stainless steel or similar.
- In areas prone to heavy snow falls, fascia
brackets should be fixed at maximum intervals of 800mm with two Size 6
(minimum) roundhead screws*.
- Where, due to the absence of a fascia or
the design of the building, support brackets cannot be fixed, Freefoam offer
a range of rafter brackets to suit each profile that is screwed to the
rafter. Where a gradient is required, rise and fall brackets can be used.
Freefoam supply a range of gutter adapters to connect to existing gutter
systems. All adapters must be supported at either side of the connection. It
is recommended that the joint be secured by a suitable waterproof sealant.
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