Concrete stairs - this is how it works in DIY


The concreting of an outside staircase can be done with a little skill even. How it works, and what you should consider when planning and building, you will find in our step by step instructions explained in detail and clearly.

Outdoor stairs in the self-construction

When building an external staircase, one usually has no major problems to expect. In the interior staircase, however, there are other planning aspects that have to be taken into account - such as the statics of the stairs.

Since the installation and modification of a staircase also require appropriate technical planning and a building permit, you can not go to work here yourself.

Planning aspects of the exterior staircase

For external stairs, you should definitely know the standard specifications that you must meet for stairs. Essentially this concerns:

  • the allowed slope of the stairs
  • the ratio between height of rise (step height) and width of step (step width)
  • the specifications for the compulsory handrail
  • the width of the stairs, which must be at least

Mandatory measurements

DIN 18065 requires the following dimensions:

The running distance of the stairs (ie the usable width) must be at least 50 cm for "unnecessary" stairs and at least 80 cm for "necessary" stairs (escape route). With this measure, a staircase is also comfortable to commit.

The optimal ratio between step height and step width is 18 cm high and 27 cm wide. You should not deviate from this ratio as much as possible or only slightly. The number of steps required and the so-called run length of the stairs are then based on this measure of the individual steps.

Concrete stairs - step by step

  • Concrete (be sure to use Sickerbeton!)
  • Mortar (trass cement, chippings without zero shares)
  • formwork
  • water
  • treads
  • Tool for fixing the formwork
  • Tool for mixing concrete and mortar (mortar mixer)
  • Betonwanne
  • spirit level
  • tape measure

1. Planning the stages

If you do not use a structure, you must concretely concretise with a concrete of adequate strength (C 15). Plan the dimensions of your staircase accordingly and put them away.

2. Found a foundation

Like any concrete structure, the structure of the staircase needs a foundation. How to create a foundation after the suitcase, you can read here.

3. shells

You must use the formwork material correctly and adhere to the given dimensions. For the reinforcement, it is best to use welded wire mesh. How the peeling goes, you will learn in detail in this post

4. Attach steps and handrail

After pouring and curing, you must still attach the steps with mortar and secure the handrail.

Tips & Tricks

Soak in concrete should therefore be used to allow seepage of water below the stairs. A simple slope on the stairs is not enough.


Video Board: DIY Concrete Stair Repair 2 of 3