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Rainwater system replacement 2

Rainwater system replacement 1

Fitting the outlet

Always use non rusting screws for fixings.

The easiest way to install the system is to start by fitting the outlet piece. Mount this on the fascia at the sting level. Now, mount a bracket 100mm in from the furthest point (end or corner). This will allow space for the last fitting. Fix gutter brackets at regular intervals between, not more than 1 metre apart, taking care that they will not foul any join pieces.

Fitting the gutter

Starting at the outlet, lay the first length of gutter on the brackets. Position it so that the end is about 5mm from the stop end inside the outlet piece to allow for expansion. Tip the back edge of the gutter under the clip at the back of the brackets, then pull the front edge down gently into the front clip. Mount a jointing piece at the end and continue in the same fashion. Always allow 5mm clearance from the gutter stop within fittings for expansion. The last length will need to be trimmed. This is easily done with a hacksaw. To cut it square, use a straight edged piece of paper wrapped round the gutter and back on itself to provide a guide. File off any rough edges. The last length will fit either into a corner piece which will need to be mounted at the string level, or a stop end. With stop ends, allow the gutter to run past the end of the fascia by about 50mm.

Fitting the downpipe

At the outlets, fit an offset bend pointing back towards the wall. Hold a second offset bend at a position a little off the wall to line up with the downpipe which will be held on brackets. Measure and cut a length of pipe to connect these two offsets in a ‘swan neck’ arrangement. Now hold a length of downpipe onto the bottom bend and place a pipe bracket over it. Mark the fixing holes and drill and plug the wall accordingly. Fasten the first section of pipe with the bracket. Mark and fit further brackets at 2m intervals adding new lengths of downpipe as required.

At the gulley

At the bottom, the pipe will need to be cut to length in the same fashion as for the gutter.

If the downpipe is to be fed into a gulley underground, cut it to length so that it reaches sufficiently into the gully housing, then assemble. Make good around the pipe where it feeds into the ground.

Where the downpipe feeds over an open gully, trim it 50mm above the grid, and fit an outlet shoe.

If desired, the downpipe assembly may be welded using the appropriate solvent in a similar fashion to that for plastic waste pipes.

Follow the manufacturer’s instructions and pay particular attention to the safety precautions.

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