Cyclone Steel gutters and rainwater system
Choosing the right dimensions
A
The Cyclone roof drainage system offers
three different sizes of gutter: 100, 125 and
150mm. Downpipes are available in the
following sizes: 75, 87 and 100mm diameter.
B
α
It is important that the sizes of any roof rainwater
system reflect the size of the roof and number
of downpipes, since these factors determine the
amount of water that will have to be conducted
away. The tables below show which sizes are
best for various roof areas.
Pitched roof
In order to determine the dimensions of your
roof rainwater system, you must first find out the
area of your roof. Measure the length and width
of the roof and multiply these figures to get the
area. If you have a hipped roof or a cross gable
roof, add up all the roof areas to obtain the figure
for the total roof area which the gutters and
downpipes will be serving. Once you have your
roof area, use the table below to identify the gutter
and downpipe sizes you need.
Hipped roof
Cross gable roof
Gutters – diameter where roof pitch α < 45º
Nominal diameter (mm)
100
125
150
Max roof area per downpipe (A x B)
50m2
50-100m2
100-200m2
Note: The gutter should have a slope of 3–5mm/m along the fascia board.
Downpipes – diameter where roof pitch α < 45º
Nominal diameter (mm)
75
90
100
110
Max roof area per downpipe (A x B)
50m2
50-100m2
100-150m2
150-200m2
Note: Where roof length exceeds 10m, two downpipes are normally needed.
100
600 600 600 600 100
100
600 600 600 600 600 600 600 600 600
8 7 6 5 4 3 2 1
House length up to 10m =
1 downpipe
The brackets are placed at 600mm intervals
on a slope. The first and last brackets are
installed approx. 100mm from the end of the
gutter. In houses up to 10m, the gradient
falls away in one direction. In longer buildings,
8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8
House length 10–20m = 2 downpipes
a double slope is formed, i.e. you make a
high point between two downpipes (total
length 20m) and make the gutter gradient
from the high point down towards each of
the downpipes.
Sales 0115 930 0681 Technical 01952 262529 www.cyclonesteelguttering.co.uk
100
Cyclone Steel gutters and rainwater system
Brackets
The following is a quick guide to choosing the right type of gutter bracket for your
roof configuration.
1. Fixing to roof:
Straight rafter bracket
Use rafter brackets when
fixing to roof. (Bend to suit
roof pitch.)
2. Fixing to angled
fascia board:
Adjustable bracket
Adjustable bracket fits a fascia
board with an angle of 0–38°.
3. Fixing to vertical
fascia board:
Compact
bracket
Adjustable
bracket
Use compact fascia bracket
or adjustable bracket on a
vertical fascia board.
Guide to installation
Storage & unpacking
Fastening
Tools
Make sure that the Cyclone
components are handled with
care during storage and
unpacking. If not, the coating
may be damaged or the pipes
and gutters dented. Store pipes
and gutters on a plain and
stable surface.
The fasteners you will require
are used for securing the
gutters and downpipe brackets.
We recommend the use of our
colour matched screws fixings
as they provide good corrosive
resistance (see page 14).
Cyclone’s rainwater system
can be installed with ordinary
hand tools like pliers, hammer,
hacksaw, screwdriver, tape
measure and string. For
bending brackets, you need
a bracket bender.
Cutting
• Spirit level
Cut the gutters and pipes with
tin snips or a hacksaw on a firm
platform. Never use an angle
grinder, it heats the steel up
and destroys the galvanisation.
The coating may also be
scorched by hot chips or filings.
• Tape measure
• Pencil
• Screwdriver
• Tin snips
• Hacksaw
• Bracket bender
• Rubber hammer
Sales 0115 930 0681 Technical 01952 262529 www.cyclonesteelguttering.co.uk
Cyclone Steel gutters and rainwater system
Gutter and angle installations
Fitting gutters
Place the gutters into the
brackets and secure.
Join the gutters once installed
into the brackets.
If using rafter or adjustable
brackets you will need to
bend over the securing plate
on the front of the bracket.
Joining method 1 – gutters with gutter joint
When joining sections of gutter,
first hook the back edge of the
joint piece round the gutters.
Then place the front clip over
the edge of the gutters. After
this, press the clip down.
Lock it in place with the
small clip.
Joining method 2 – with rod and gutter jointing clips
Insert 150mm long support
rod into the rolled edge of the
gutter or angle.
Push both components
together.
We recommend the use of
150mm rods in addition to
gutter jointers for extra support.
Sales 0115 930 0681 Technical 01952 262529 www.cyclonesteelguttering.co.uk
Add jointing clip.
Cyclone Steel gutters and rainwater system
Fitting gutter outlets and gutter ends
CYC598 HDPE drain trap
Fit the gutter end by twisting
it into the rolled edge of the
gutter, and apply a bead of
metal sealant.
Press the gutter end down into
the gutter and tap it into place.
Universal gutter end. The metal
edge that is not required may
be snapped off at the existing
notch. Smooth out the sealant.
Fitting gutter outlet to gutter – hole cutting method 1
Mark the gutter at the point
where the downpipe is to
be located.
Make two diagonal cuts with a
hacksaw to create an aperture
of approx. 100mm.
Place the gutter outlet over the
hole ensuring that the lipped
edge clips into the rolled edge
of the gutter.
Press the gutter outlet against
the gutter and fix it in place,
bending over the securing lugs.
If you are experienced in
sheet-metal work, you can
use tin snips instead.
Fitting gutter outlet to gutter – hole cutting method 2
With a hole cutter, drill an
aperture of at least 100mm
diameter.
Remove sharp edges with a file.
Sales 0115 930 0681 Technical 01952 262529 www.cyclonesteelguttering.co.uk
Bend edges of hole down
to form a rain lip.
Cyclone Steel gutters and rainwater system
Bends and offsets
OH
H
IP
Start by measuring the overhang
length (OH). The tables show
the lengths of intermediate
pipe necessary, 70° bends and
various overhang sizes. You
may be able to cut off a section
of downpipe to use as an
intermediate pipe.
OH = Overhang length
Assemble the components.
H=D
istance from bottom
edge of gutter to end
of bend
IP = Length of
intermediate pipe
For 70° bends
OH
200
300
400
500
600
700
800
IP
0
140
240
350
460
560
670
H
380
420
460
510
560
610
660
Fitting downpipe brackets
Fix a pipe bracket to the wall
immediately below the bend.
Fix the next pipe bracket
directly below the first, and so
on. Max. 1.5m between each
pipe bracket.
Fit the entire downpipe
assembly. Press the pipe
bracket together and tap the
wedges into place using a block
of wood or rubber hammer.
Sales 0115 930 0681 Technical 01952 262529 www.cyclonesteelguttering.co.uk
Pipe brackets for wood can
also be used for stone, but
need to be secured using plugs
and screws.