How to keep joints moss-free

There are different options for terrace areas or Concrete slabs protect from moss growth. You can impregnate or seal the surfaces. However, the joints are not protected or only slightly protected. An effective prevention against moss in joints is a weed killer. However, this measure has to be carried out again and again and pollutes the environment.

What is the difference between sealing and impregnating?

A seal should form an impermeable film on the treated area and seal it completely. This makes the surface shine and is particularly easy to clean. If the seal gets into the joints, at least less moss and weeds will grow there, and narrow joints can even be completely sealed. However, this treatment may make concrete more sensitive to frost.

In contrast to sealing, impregnating agents penetrate the pores of the stone or concrete slabs but do not form an impermeable film. They are moisture-permeable, but repel dirt. Accordingly, they are not as effective in joints as a sealant.

How do I remove moss from the joints?

Without sealing, impregnation or Weed remover sooner or later moss will grow in your joints. So that your knees don't hurt or at least don't hurt too much after scratching them out, you should use a knee pillow.

You can get this pillow for little money on the Internet or in gardening shops, as well as special ones Grout scraperthat will make it easier for you to remove moss and weeds and also remove the roots (at least partially). Alternatively, you can of course scrape out your joints with an old knife.

The essentials in brief:

• Sealing: complete sealing of the surface
• Impregnation: penetrates pores, no impermeable film
• Apply as early as possible
• It is essential to clean the joints beforehand
• Weed killers help, but are not necessarily environmentally friendly