Exterior plaster types - An overview

What type of exterior plaster comes to a house depends not only on visual reasons but also on the house itself and some structural conditions. Some exterior plaster types also fulfill special purposes, such as restoration plaster.

Exterior plaster types according to material and appearance

Exterior plaster can be made either mineral or based on synthetic resin. By far the most common is cement plaster, it is also the cheapest Putzart. Over the cement plaster as a base coat, layers of finishing plaster can possibly also be applied, which can then also be painted with exterior paint.

Lime cement plasters are qualitatively a bit higher quality and are widely used in new buildings. Their weather resistance is relatively good in that lime is very good at absorbing and releasing moisture.

Over these plasters special silicate plasters with coarse grains and thus interesting, structured grains can be applied, which also form a good basis for exterior colors.

The so-called Reibeputze are upper plasters with structure optics, but mostly on a mineral basis.

Finished plasters for outdoor use can be applied with rollers or brushes. They are very easy to work with, but are only suitable as topcoats.

Insulating plasters also have a heat-insulating effect due to special admixtures.

Air lime is a mixture of slaked lime and sand - it is usually used only on historic buildings on the outside and must be protected by a so-called Egalisationsanstrich also.

In the outdoor area, a division in the upper and lower plaster is not as clear as in the interior - occasionally there are several layers of finishing plaster - or none at all.

Base plaster and exterior wall plaster

The base of a building should be as close as possible to standing in front of the base water, while still allowing water vapor to penetrate from the wall to the outside. For this reason, cement plaster is often used as a base plaster, but lime cement plaster is often used on the wall, which is then covered with additional layers of silicate plaster or rubbing plaster.

Restoration

Restoration plasters, as the name implies, are often used in renovations and buildings in need of renovation. It is primarily used for the remediation of moisture-damaged exterior walls, or for strong salt deposits.

Video Board: What type of plaster for outside wall?