How to lay drainage pipes? Guide

Added: Monday, 12/29/2025


In order to drain a building, we need a special type of pipe - drainage pipes . They are designed to cope with these specific conditions. Let's find out the most important information about them! Let's find out the key information, especially about the depth at which they should be planted. At the end of the article, we will recommend several types of drainage pipes.

Drainage pipes

What is a drainage pipe?

A drainage pipe is a special type of pipe that is designed strictly for use in underground drainage systems. Here we mean in particular the implementation of perimeter drainage, which is necessary in many cases. Such a necessity arises, for example, when we build a house with a basement on ground that contains impermeable clays and silts. The same applies to houses built on a slope. Drainage is also a mandatory task for every investor renovating an old house in which drainage either does not exist or is in a deplorable condition. Often, its symptoms are damp walls or a periodically, especially after thaws, flooded basement. Drainage pipes effectively solve this problem by draining excess water from the area around the building. In this way, walls and foundations are protected from moisture. But they have a much wider application, because they are also successfully used for draining fields and meadows, airports, tracks, roads, parking lots or large industrial areas.

Check the drainage pipes at the Onninen wholesaler

How deep to bury drainage pipes?

Trench for drainage pipe There is no doubt that drainage pipes are useful in countless situations, but it is crucial to plan and perform drainage well. The issue related to the depth at which we should bury drainage pipes is very important. The beginning of the pipe, which is the furthest from the collecting pit, should be placed approximately halfway down the foundation. It is recommended to place them in the ground at a depth of 60-70 cm. You can go a little deeper, but a maximum of 80 cm. You cannot place them too shallow either, because this can negatively affect the efficiency of the system. It can also, worse still, contribute to increased humidity of the substrate and, as a consequence, capillary suction through the walls of the building.

Other factors are equally important. We cannot forget about the slopes, which should be around 0.5-1.5%. Remember to place a layer of aggregate on the bottom of the trench. River gravel sand of around 25-30 cm thickness works great here. Once we have done that, we can lay out perforated pipes and connect them appropriately with special connectors. However, we should make sure that there are not too many of them. We will limit them by using pipes 20-50 m long.

Drainage pipes at the Onninen wholesaler

PVC drainage pipe Kaczmarek DN/OD 100x91, roll 50m, SN4, with coconut fiber filter There are various drainage pipes available for sale, and the most common division is based on the materials they are made of. These are mainly polyvinyl chloride (PVC), polyethylene (PE) and ceramics (e.g. stoneware). Nowadays, plastic pipes are most often used, because they have many advantages, such as durability, low weight and ease of installation and transport. Regardless of the type of drainage pipes we need, we can be sure that we will buy them at the Onninen plumbing wholesaler.

One of the interesting options are Kaczmarek drainage pipes with a coconut fiber filter . Designed for light drainage - ideal for draining rainwater, Drainage pipe Kaczmarek PVC DN/OD 100x91 drainage of meadows and fields. They have a wavy shape in yellow and a profiled surface, both internally and externally. Another one worth considering is the Kaczmarek drainage pipe with a PP filter - fully seeping, with perforations around the entire circumference (TP variety).

Drainage pipe Kaczmarek Kaczmarek drainage pipes without perforation holes PVC DN/OD are also available . Corrugated in yellow, just as durable because they are made of high-quality PVC.

Drainage pipes are a mandatory and extremely important part of every investment. However, it is important to choose them well, taking into account the needs and requirements of the project. Drainage pipes are a mandatory and extremely important part of every investment. However, it is important to choose them well, taking into account the needs and requirements of the project. This determines that the drainage system will work flawlessly. When laying them, let's not forget about the appropriate depth, because this parameter is of great importance. Under no circumstances can it be ignored.

Check the drainage pipes at the Onninen wholesaler