Guide to plastering the outer wall

When plastering the outer wall, the type of plaster used and plaster base always depends on the construction and the building material used. As a rule, however, light plaster can be used in all modern buildings. But there is a lot to consider.

Suitable cleaning materials for exterior walls

In general, mineral light plasters are highly recommended for modern, newly constructed buildings today. Due to their low weight per unit area, they build less tension, and they are also highly resistant to moisture. They consist mainly of lime, cement, gypsum - sometimes also of clay - with various additions, such as ground natural stones. Except for brick walls, today almost all exterior walls can be plastered in one or two layers in relatively thin layers of around 15 millimeters. However, brick walls, in particular lightweight bricks and thermally insulated types of bricks, are provided with plaster thicknesses of at least 2 centimeters.

Base plaster and exterior wall plaster

As a rule, a plaster must be used for the base, which on the one hand allows water vapor and moisture to escape, but is also insensitive to moisture acting from outside and protects the building base, on the other hand. As base plasters, cement plasters, which are by far the best in this regard, are the best choice, in contrast to wall plaster. For exterior wall plaster, however, use should be made of mineral plasters.

Pre-treatment of the substrate

It is important to check in advance the adhesion of the substrate and to improve it if necessary. Especially deeper joints or contiguous, different building materials should be pretreated in any case. Here, on the one hand Putzarmierungen be displayed, on the other hand filling the joints or special joint closures, for example, for joints. The application of plaster moldings is also part of the preparatory work that is necessary before plastering. At particularly problematic places exposed to strong weather, you should preferably use stainless steel cleaning strips.

If the adhesion of the subfloor is not guaranteed, you must either use appropriate primers or, if necessary, with a sprinkler.

Video Board: Teaching beginners plastering and stucco work