R Thanks @Nailbag , @EricL @JacobZ and @Dave-1 thanks for the great advice! Foam it is! Great idea on side cuts - i may be able to reduce a cut in ...

Thanks Jacob. I have decided to allow (cut/widen) 100mm from channel edge to existing concrete on each side to allow space for pushing concrete into ...

Thanks!. The drain channel i will be using has 25mm sides polly-crete with gal. Grate (not the thin black poly/plastic) - and I am looking at 75mm or ...

Hi.I need to replace a grated driveway drain in my driveway. How wide should the cut/ concrete be either side of the new drain (to create the new 'con ...