Laying Rainbow gutter system to a fall of 1:600, 25mm in 15m is, recommended this will increase the flow capacity and increase the area of roof that can be drain, particularly if the down-pipe is positioned centrally. It will also prevent silting.
Rainbow rainwater system is fitted with a "Flexiclip" and seal jointing mechanism, making it easy to connect gutter to fittings. This ensures a positive permanently watertight joint.
Fixing gutter bracket
Gutter bracket have single screw fixing, allowing the fitting to pivot to the required gutter fall.
1. Lay the gutter to the gutter end line and place it under the part of the clip nearest the fascia.
2. Pull the gutter down with the fingers whilst simultaneously pushing the clip over the gutter with the thumbs.
Fixing gutter coupler
Support gutter coupler at their centre with a support bracket, allowing the fitting to pivot to the required gutter fall. Also fix support brackets within 1m of both sides of all gutter joints.
Fixing rafter brackets
Select the metal gutter rafter bracket as per site requirements. Adjust the fixing position of gutter rafter bracket as per the slope requirement. Fix the gutter with rafter bracket with adjustable mechanism provided with the bracket.
The capacity of rainwater system to drain a roofarea effectively depends on following four factors.
2.Level to which the gutter is
3. Number of outlets
4. Location of outlets
Roof area ( pitched roof )
To calculate the roof area to be drained the effective roof area following formula can be used.
Effective roof area m² = (A + •) x C Where
A = Length of eaves to ridge
B = Height of roof from eaves to ridge
C = length of roof