The pipes are drilled whilst wet and the semi-dry nature of the concrete used in the manufacturing process leads to spalling on the inner and outer surfaces around the holes.

Perforated Drainage Pipes - Land Drain Pipes - JDP

Unperforated land drain is for distributing collected surface water, as unlike perforated coils, they have no holes for water to drain into. Fill the trench up with a minimum layer of 300mm gravel backfill to a depth of about 150mm from the surface.They are installed as a buffer pipe around the foundation to prevent leakage into basements and water damage. The socket on this pipework is a blown 110mm socket, which features a captive seal to provide quick and easy installation. You don't need an in-depth technical construction drawing but making a plan of what, where and how will make a handy guide throughout installation. Land drainage is available in either perforated or unperforated lengths, each working in a slightly different way.

basic guide to land drainage | JDP A basic guide to land drainage | JDP

The calculated inflow rate for each orifice is then multiplied by the number of orifices in the length of pipe being considered. We want your perforated pipe to work effectively and that means locating it in the most useful place. For more information on how to create a French drain see our Step By Step Guide to Building a French Drain. To keep your garden looking its best through storms and heavy rain, land drain is the ideal solution.

We are proud to provide professional drain installation carried out by our team of fully-trained and experienced experts.