02 Aug Application in dry or hot weather
The hardening process of coating mortars based on hydraulic conglomerates (cement, lime, etc.) is highly conditioned by the possibility of rapid water loss.
Therefore, control over temperature and humidity is a determining factor for the good execution of this construction element.
Preliminary analysis
Elevated temperatures and wind cause difficulties in the application of coating mortars, altering the characteristics and final features thereof.
The proportions of mortar mixing water can be highly altered by excessively fast drying in the event of any of the following:
- Highly absorbent substrates.
- High ambient temperature.
- Strong wind.
The immediate consequence is the appearance of these pathologies:
- Coating mortars with a tendency to crack.
- Powdery and inconsistent superficial appearance of the product.
- Loss of resistance and alteration of final characteristics.
Technical considerations
Therefore, a series of precautions must be taken in the application of coating mortars in dry weather, such as:
- Prior to applying the mortar, adequately moisten the substrate and then wait until the shiny layer of water disappears in order to ensure the correct joint between the substrate and the coating.
- Avoid direct exposure to sunlight while the coating is fresh.
- Lastly, moisten the coating with sprayed water at the end of the workday and then again after 24 and 48 hours have elapsed.
Recommended products
Mineral coatings
Warnings: The data provided by this Constructive Solution were prepared based on standard onsite installation processes. However, we recommend that you consult our Technical Department in the event of any specific circumstance info@gecol.com