Drainage Services in Llanishen

Llanishen developed substantially from the 1930s onward around its reservoir, with post-war council and private estates built on separate foul and surface water drainage systems typical of that era, while more recent development towards Pontprennau and Lisvane on the city's northern edge uses modern plastic pipework designed to manage surface water with attenuation given the increased hard surfacing of new housing.

The area sits on higher ground than much of central Cardiff, generally draining well, though the reservoir and surrounding green spaces mean tree roots are a recurring cause of blockages in older estate pipework nearing seventy years old. Cyncoed and Heath include a mix of larger inter-war properties and later infill, so drainage age and material can vary considerably within the same street.

We begin with CCTV survey to confirm pipe material and locate defects accurately, since this suburb's drainage spans several decades of development. High-pressure jetting clears root ingress from the area's mature trees and green spaces, and no-dig relining repairs cracked or displaced pipework with minimal disruption to gardens and driveways across these established residential streets.