MORTAR monolayer REHABILITATION

MORTAR MONOCAPA for faade covering

Monocapautilizados mortars for lining and rehabilitation of facades are usually composed of cement, additives, aggregates and fibers, are already pre-dosed industrial factory and only need to be kneaded and mixed with water on site, in the amounts indicated, before being extended or projected onto the facade.

Usually they apply one or two consecutive hands mortar to achieve the final thickness recommended for exterior cladding (about 15 mm) and can choose between various aspects of finishing depending on the pigments and final treatment given to the monolayer mortar after being extended in the facade.

The monolayer mortars for exterior cladding are included in what is called continuous coatings and rehabilitation of facades with mortars monolayers must have several factors into account to ensure maximum performance of the final coating layer mortar facade .
The first factor to consider when choosing the monolayer mortars for the restoration of facades derived from the characteristics of mortar, namely adhesion, waterproofing, water vapor permeability, and durability.
Tending impermeability as mortars monolayer capacity to absorb some water during a rainfall without allowing reaches the support and subsequently evaporate under conditions of environmental dryness, it follows that the monolayer mortar is unsuitable for coating faades exposed continuously wet conditions, little ventilation and generally adverse weather conditions.

Other aspects to consider in rehabilitating facades with monolayer mortars are the conditions of compatibility between the monolayer mortar and support as well as their conservation status, factors that largely determine the proper adhesion of the facade mortar monolayer.
This connection the monolayer mortar as cladding material is incompatible in various situations such as: stands little or no porosity such as the media painted metal or glazed, when the support has a very different elasticity mortar monolayer, when the expansion coefficient of the layer mortar and the support is very different and when mortar and chemical incompatibility between support such as plaster of supports.

Finally, when it comes to rehabilitate facades using mortars monolayer it is important to consider the geometry and flatness of the facade. While the dimensions of the facade to rehabilitate is not a determining factor for the choice of mortars monolayer as a coating material factor, keep in mind that continuous and vertical planes monolayer mortar application is very easy but in facade areas that have many discontinuities, inclined planes exposed to the action of water (more than 10 pending) and horizontal planes (balconies or terraces) must take special care in the application of monolayer mortar and carefully observe the recommendations manufacturer.

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