Installing Quatrefoil Channel Grating Part 1

Channel Gratings are ideal for collecting surface water along the lengths of pavements, drives and at the base of doorways and conservatories. Here we are installing a Quatrefoil channel grating at the base of a 2.4 metre wide garden step in the grounds of a listed building. Our system uses the Manthorpe plastic channel with our own cast iron grating that screws into the channel and can be used in conjunction with a junction box to allow L T and X shaped channels to divert water in almost any situation.

First*, clear the ground and sink a new drain pipe to take away the excess water. Here you can see we have used a fixed drain that will connect up to the rainwater drain for the house and take away the water. You can install a drain pipe that leads to a soak away or if you don’t want to dig down then you can leave one end of the plastic channel open so the water can be diverted along the surface . This can be done forming cement channels to divert the water down hill to a soakaway or to another drain pipe elsewhere on the property.

Connect up the plastic channels and lay the full lengths were they will be installed. Using a level, check the fall and ensure they are square. Cut the hole at the base of one of the channels were the water will drain into the drain pipe and fit the end stop (from the accessory pack) to prevent the water escaping out of the of the plastic channel. Lay a base of concrete along the whole area for the channels to sit in and then fit all the channels ensuring the other end cap is fitted at the end of the run.

see part two for finishing off

* our products are especially designed for listed buildings but please ensure you obtain  permission from the conservation department of your local authority if you are listed before starting the works